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COINWASH T3300S, Service Manual

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COINWASH T3300S Service Manual Download Page 61

487 0329 21

27.5

27. Sensors and overheating thermostats

27

Service
manual

Outlet air - Thermistor element (NTC sensor)

Function

The sensor measures the temperature in the outlet air and the signal is returned to the
main circuit board. 
The main circuit board turns the heating unit off when the outlet air thermistor indicates
that the required temperature has been reached.

The resistance of this device is normally 80 to 100 kOhms at 20°C (68F) and it drops as
its temperature increases.

The sensor A is mounted on the same bracket as the outlet air overheating thermostat.

Error codes

The following error codes are related to this section.  

E02, E04, E18 

Refer to section 12 for more information.

A

Summary of Contents for T3300S

Page 1: ...ear the room building or area of all occupants Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier WARNING For your safety the information in this manual must be followed to minimize the r...

Page 2: ......

Page 3: ...aintenance 11 Error codes 12 Controls 21 Sensors and overheating thermostats 27 Door and lint drawer 29 Motors drive and blower 30 Heating gas 40 Coin meter see section 21 41 Drum with bearing 42 Gas system 47 Overview Service Instruction Machine units and components Service manual ...

Page 4: ......

Page 5: ...cal and gas installations must only be carried out by qualified licensed personnel Report machine malfunctions to qualified service personnel immediately This is important for your own safety and for the safety of others Gas dryers only The machine is not to be installed in rooms containing cleaning machines with PERCHLORETHYLENE TRICHLOROETHYLENE or CHLOROFLUOROCONTAINING HYDROCARBONS as cleaning...

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Page 7: ...487 0329 21 2 1 2 Technical data 2 Service manual Contents Technical data type 3300S gas heating 2 2 Technical data type TD30 30 gas heating 2 3 ...

Page 8: ... 6 kg Motor Effect without reverse 2 x 1 kW Effect with reverse 2 x 1 kW Revolutions per minute Motor 50 Hz 2700 rpm Motor 60 Hz 3200 rpm Heat effect Gas heating 2 x 21 kW Air consumption Gas 2 x 21 kW 2 x 650 m3 h Piping Exhaust Ø 200 Pressure drop Exhaust max 90 Pa Gas piping ISO 7 1 R1 2 Gas pressure See page regarding pressure in the installation manual supplied with the dryer Sound pressure l...

Page 9: ...Capacity 2 x 30 lb Motor single phase Effect of cylinder vent motor 2 x 0 54 hp Revolutions per minute Motor 60 Hz 3200 rpm Heat effect Gas heating 2 x 71600 BTU h Air consumption Gas 2x 21 kW 2x383 cu ft min Piping Exhaust ø8 Pressure drop Exhaust max 0 35 W C Gas piping 1 2 NPT Gas pressure See page regarding pressure in the installation manual supplied with the dryer Sound pressure level 70 dB ...

Page 10: ...2 Technical data 2 Service manual 487 0329 21 2 4 ...

Page 11: ...487 0329 21 3 1 3 Description of principal components 3 Service manual Contents Description 3 2 ...

Page 12: ...ntrol s memory It is also possible to directly select the desired drying time The dryer stops automatically when the clothes are dry Auto Stop The dryer s control provides diagnostic error codes which offer guidance in troubleshooting Coin drop card reader The dryer is available with a factory installed coin drop a factory installed card start system or it can be prepared for field installation of...

Page 13: ... Function check 11 2 Maintenance Exhaust plenum perforations 11 3 Maintenance Blower compartment door gasket 11 4 Maintenance Secondary lint screen 11 5 Maintenance Internal wearing parts 11 6 The area surrounding the dryer 11 7 Safety and warnings signs USA only 11 7 ...

Page 14: ... Correct direction of rotation For dryers with a 3 phased motor the direction of rotation must be checked Check the direction of rotation of the blower motor 1 Fig 1 Correct direction of rotation must be clockwise when viewed through the ventillation holes on the motor cover on the rear of the dryer If the direction of rotation is not correct swap two phases on the power input connection terminal ...

Page 15: ...locked with lint or other debris Dismounting 1 Dismount the external exhaust duct from the dryer 2 Fig 1 Dismount the dryer s exhaust plenum by removing the two screws A from the flange at the top of the plenum and lifting it away The inside part of the exhaust plenum can be cleaned Perforations 1 Fig 2 Check weekly that perforations B are not blocked with lint and dust 2 Clean them with a vacuum ...

Page 16: ...r other debris Dismounting 1a Fig 1 Dismount the blower to get to the blower compartment see section 30 1b If the dryer has a heavy accumulation of lint the exhaust plenum should be removed The top of the blower compartment A can now be cleaned Door gasket Check that the loading door gasket is clean and in good condition Use a suitable cleaner Do not use solvents that may damage sensitive plastics...

Page 17: ...inish Secondary lint screen Check at least every other day that the secondary lint screen A behind the lint drawer B has not become blocked with lint or other debris The secondary lint screen A is essential for reducing lint accumulation in the blower ALWAYS reinstall this screen after cleaning it Dismounting 1 Remove the screen drawer B from the dryer 2 Remove the 2 wing nuts 3 Remove the seconda...

Page 18: ...el See section 42 Replacing support rollers 3 Remove the lint using a vacuum cleaner 4 Inspect the two support rollers and replace them if necessary 5 Re assemble the dryer 6 Connect the power supply remember to carry out a function check as decribed earlier in this section Tightening drive belt 1 Remove the plate in front of the transmission module See section 30 Dismounting transmission module 2...

Page 19: ...nd free from combustible materials gasoline and other flammable vapours and liquids Safety and warnings signs USA only Product safety signs or labels should be replaced when they no longer meet the legibility requirements for safe viewing Check that all the safety and warning signs are located on the dryer as shown in the installation manual supplied with the dryer A copy of this manual is availab...

Page 20: ...11 Periodic maintenance 11 Service manual 487 0329 21 11 8 ...

Page 21: ... Contents Error codes Overwiew E 01 E 08 12 2 Error codes Overwiew E 09 E 99 12 3 Important service note 12 4 Troubleshooting 12 5 12 25 Check list E01 E02 E08 and E15 12 26 The heating indicator on a electric heated dryer is on 12 27 Error log 12 28 ...

Page 22: ...The thermistor element measuring the air outlet temperature from the drum or the wiring to the sensor has shorted E 05 Blower motor The thermal protection switch in the motor 12 10 or its harness is open E 06 Drum motor The thermal protection switch in the motor 12 11 or its harness is open E 07 Not in use on this model E 08 Inlet and Outlet air protection thermostats 12 12 12 14 One of the procte...

Page 23: ...was not detected on gas heated dryers 12 18 E 15 Vacuum switch The vacuum switch does not shut within 5 seconds after the dryer is started 12 20 E 15 check list 12 26 E 16 Vacuum switch 12 20 The vacuum switch was already closed when an attempt to start the dryer was made E 17 Input sensor disconnected 12 21 The inlet thermistor or wiring to the thermistor is open E 18 Output sensor disconnected 1...

Page 24: ... be disconnected from all circuits that might affect the accuracy of the measurement E 01 E 02 E 08 General note regarding error codes related to overheating Before troubleshooting the electronic systems of the machine examine the dryer to determine if the airflow is normal Insufficient airflow due to over filling the machine lint obstructed screens air passages and ducts or improper exhaust venti...

Page 25: ...ss For instructions on entering programming mode see section 21 Disconnect NTC sensor at its terminal block connection to dryer wiring harness Replace harness Go to step 4 NO YES Error description The input temperature exceeds 85 C 185 F for more than 10 sec The air thermistor is a negative temperature coefficient NTC sensor As a result of this the resistance decreases as its temperature increases...

Page 26: ...re resistance between P18 1 and P18 2 on main circuit board at room temperature Is the circuit open infinite resistance NO YES YES Error description The input temperature exceeds 220 C 428 F for more than 10 sec The air thermistor is a negative temperature coefficient NTC sensor As a result of this the resistance decreases as its temperature increases The dryer stop operating Error analysis For in...

Page 27: ...ature exceeds 85 C 185 F for more than 30 sec The air thermistor is a negative temperature coefficient NTC sensor As a result of this the resistance decreases as its temperature increases The dryer stop operating Error analysis See section 27 2 Defective NTC sensor Disconnect NTC sensor at its terminal block connection to dryer wiring harness Replace harness Go to step 4 NO YES Measure resistance ...

Page 28: ...short circuited A defective detection circuit in the main circuit board can also cause this error The dryer stops operating Error analysis 2 Defective NTC interface on main circuit board Measure the resistance of the NTC sensor and harness between P18 1 and P18 2 on the main circuit board Is the resistance between 100 kΩ and 120 kΩ at 20 C 68 F Replace NTC sensor or harness Section 27 Go to step 2...

Page 29: ...s short circuited A defective main circuit board can also cause this error The dryer stops operating Error analysis See section 27 2 Defective NTC interface on main circuit board Measure the resistance of the NTC sensor and harness between P18 3 and P18 4 on main citcuit board Is the resistance between 100 kΩ and 120 kΩ at 20 C 68 F Replace NTC sensor or harness Section 27 Go to step 2 NO YES YES ...

Page 30: ...ard and the switch has opened A defective main circuit board can also cause this error The dryer stops operating The error is only detected when the door is closed Error analysis Replace motor or clear blockage Go to step 3 NO YES Is there continuity between P6 2 and P6 5 in the harness plug Is the motor cold NO YES Wait until the motor is cold and restart it The error occurs immediately Replace t...

Page 31: ...he main circuit board Are the vent holes in the motor cover obstructed Go to step 2 Clean the perforations NO YES Check motor harness and con nector Replace motor harness connector YES Replace motor or correct reason for mechanical overload Go to step 3 NO YES Is there continuity between P7 5 and P7 6 in the harness plug Is the motor cold NO YES Wait until the motor is cold and restart it The erro...

Page 32: ...stats or the connecting harness has opened A defective main circuit board can also cause this error The dryer stops operating The error is only detected when the door is closed Error analysis Overheating thermostat section 27 See Inlet air YES Go to step 3 See Outlet air YES 2 Has the high limit protection thermostat near the heating unit tripped 2 Disconnect P4 from the main circuit board Check f...

Page 33: ...r from the check list NO YES Replace as appropriate Go to step 3 NO NO YES YES Is the inlet sensor placed correctly in the inlet air flow behind the drum Replace main circuit board Correct the possition of the sensor YES Enter the programming mode and adjust the inlet temperature setting NO Inlet air Is the door gasket or sealings defective missing dirty Are there any errors according to the list ...

Page 34: ...tlet air 1 Missing air flow See check list on page 12 26 Go to step 2 Correct the error from the check list NO YES Replace the main circuit board Correct the position of the sensor NO YES Are there any errors according to the list 2 Is the outlet sensor placed correctly in the outlet air flow ...

Page 35: ...ese are erased when factory defaults are restored NO YES Error description This error occurs when the parameter set up is inconsistent Note When resetting the circuit board the user adjusted programs disappear and need reprogramming The dryer stop operating Error analysis 1 Enter the service program Set parameter 4 06 to 1 to restore all factory settings Exit service program and attempt to operate...

Page 36: ... factory setting Error analysis Resetting Resetting is done by opening closeing the door to the dryer and press the start button once or by pushing the start button twice Go to step 2 NO NO YES YES Replace the fuses or repair heating unit and restart Check factory setting for Auto Stop max drying time Programming Selecta Control Remove some of the clothes and restart NO YES Has the heating been in...

Page 37: ...90 minutes factorry setting on the dryer Error analysis Resetting Resetting is done by opening closeing the door to the dryer and press the start button once or by pushing the start button twice Incorrect payment system set up max 90 min or defective user module Check that there are no errors on the connected payment systemor harness and correct these NO YES 1 Is the connection between UM P1 1 use...

Page 38: ...sensor does not indicate flame within 5 sec The integrity of the sensor s electrical connection is therfore critical to proper operation of this system Displaying error code E14 USA and Japan The error code is not displayed until the 3rd unsuccessful ignition attempt Europe The error code is displayed at the 1st unsuccessful ignition attempt Resetting NOTE When resetting the system the dryer must ...

Page 39: ...laced in the flame is the sensor s electrical connection okay 1 Is there a short lived flame at the ignition attempt 2 Is an ignition spark present YES Adjust clean the electrode connections NO Replace the ignition control YES Go to step 3 NO YES Adjust clean replace the electrode NO Go to step 3 Error analysis 4 Is the air reducing plate mounted France Belgium only NO Mount the plate Is the ignit...

Page 40: ...12 Error codes 12 Service manual 487 0329 21 12 20 Intentionally blank ...

Page 41: ... NO Is the circuit closed NO YES Go to step 4 Resetting Resetting is done by opening closeing the door to the dryer and press the start button once or by pushing the start button twice 1 Does the vacuum shutter plate close against the body of the dryer within 5 seconds after the dryer is started Go to step 3 3 Does the blower motor rotate in the correct direction Section 11 4 Is the air flow obstr...

Page 42: ...r to the dryer and press the start button once or by pushing the start button twice Go to step 2 YES 2 Disconnect one wire from the vacuum switch Check continuty of the switch Does it open when the shutter plate moves away from the dryer cabinet Repair shutter plate mechanism NO Go to step 3 YES Replace or adjust vacuum switch as necessary NO Replace vacuum switch harness YES Replace main citcuit ...

Page 43: ...r is displayed immediately Error analysis 3 Defective NTC interface on main circuit board Replace board Measure the resistance on the NTC sensor between P18 1 and P18 2 on main circuit board Is the resistance between 100 kΩ and 120 kΩ at 20 C 68 F Replace NTC sensor or harness Section 27 Go to step 3 NO NO YES 1 Defective NTC sensor harness YES 2 Has the heating been insufficient due to blown fuse...

Page 44: ...or is displayed immediately Error analysis Measure the resistance on the NTC sensor between P18 3 and P18 4 on main circuit board Is the resistance between 100 kΩ and 120 kΩ at 20 C 68 F Replace NTC sensor or harness Section 27 Go to step 2 NO YES 1 Defective NTC sensor harness 3 Defective NTC interface on main circuit board Replace board NO YES 2 Has the heating been insufficient due to blown fus...

Page 45: ... interface This error does not get registered in the error log Error analysis Resetting Resetting is done by either disconnecting the power or by entering the programming mode How to enter the programming mode see section 21 YES Establish the connection NO 2 Replace the main circuit board or the user module circuit board 1 Is the connection between the user module and the main circuit board correc...

Page 46: ...ure drop in the air outlet ducting does not exceed 90 Pa Measurement is done with cold air 20 C 68 F 5 Check that the air inlet screen on the rear of the dryer is not clogged by lint or dust 11 3 6 Check that the lint screen in the drawer is clean and in good condition 11 5 7 Check that the secondary lint screen behind the lint drawer has not become blocked with lint or other debris 11 5 8 Check t...

Page 47: ...cator on a electric heated dryer is on Problem description The dryer indicates that the heating is on but no heat is given off This problem type does not get registered in the error log Problem analysis YES NO Electric heated dryer E l e c t r i c h e a t e d d r y e r i s n o t y e t a v a i l a b l e ...

Page 48: ...ufacturer Location of error log The error log is located in Area B in group 3 of the parameter memory Error logs Up to five errors are recorded in the log 3 01 last occured error code 3 02 second latest error code 3 03 third latest error code 3 04 fourth latest error code 3 05 fifth latest error code Operating panel function in programming mode P 487 19 24 03 01 Enter Return Up Down The user modul...

Page 49: ... 4 Press P 5 Press P 6 Press Return 3 Press Enter the display reads 3 _ _ the display reads eg 08 the display reads 3 01 the display reads 02 the display reads _ 20 the display reads 3 01 the display reads 00 blinks 7 Press up the display reads 3 02 etc The example shows the latest error code E08 which occurred after 220 hours of operation Now the second latest error code can be read etc When the ...

Page 50: ...12 Error codes 12 Service manual 487 0329 21 12 30 ...

Page 51: ...MUST be protected from static electricity Remember Always use an earthed wrist strap Without the antistatic wrapping the board is unprotected Keep all items that can cause static discharge such as plastic bags fabric and the like away from the circuit board Items like plastic foam plastic nylon or cellophane wrapping are all big generators of static electricity Static electricity can not be felt h...

Page 52: ... circuit board One user module is placed on each hinged door to the left and right side of the top lint drawer fig 1 Each user module contains a circuit board with display indicator lamps a connector for the user keypad and electronics to communicate commands to the main circuit board via a serial interface The circuit board also contains a slide switch A for changing to programming mode fig 2 2 A...

Page 53: ...ttom dryer Behind panel Control unit with main circuit board Control locations Control unit with main circuit board Control units for top and bottom dryer respectively are placed as shown on fig 2 Control unit contains main circuit board A and transformer B fig 1 1 2 B A Safety Guard top dryer only Replace after service ...

Page 54: ...references of the owner In order to start the programming the programming mode has to be entered see the following page Following settings have to be programmed Heating type gas electric etc Reversing Yes or No Payment settings Time per coin standby display value display flashing Panel type OPL or coin Program type OPL or coin The Selecta Control parameter memory is divided into 2 areas Parameter ...

Page 55: ... the position indicated by the arrow 3 Fig 2 The display shows 0 _ _ and is ready for programming Refer to the Programming Selecta Control Installation Manual for programmming details If you make a mistake while programming the dryer move the mode switch back to normal operating mode and start again Note Remember to move the mode switch back to normal position after programming Function check Test...

Page 56: ...e Please see the instructions enclosed with the particular payment system Features User module Main circuit board Coin drop x Single System x x CP time external time control x CP coin external payment x Gateway x User module Connected on screw terminal P8 on main circuit board P8 Main circuit board Warning High voltage is present on circuit board Screw terminal ...

Page 57: ...7 Sensors and overheating thermostats 27 Service manual Contents Inlet air Overheating thermostat 27 2 Thermistor element NTC sensor 27 3 Outlet air Overheating thermostat with sensor 27 4 Vacuum shutter and switch 27 6 ...

Page 58: ...tat opens automatically and has to be reset manually Resetting Fig 1 The overheating thermostat is located behind the grille near the fresh air inlet Fig 2 In order to reset the thermostat remove the cover plate A and reach one finger into hole and depress the reset button on the back of the thermostat Error code The following error code is related to this section E08 Refer to section 12 for more ...

Page 59: ...the main circuit board and this ensures that the inlet air does not become excessively hot thus preventing scorching of garments Replacement The element is located in the heating unit and is visible from the front of the machine through the perforations in the rear of the drum Fig 1 and fig 2 The heating unit can be dismounted for easier replacement of the element For dismounting the heating unit ...

Page 60: ...dryer does not overheat during program operation The thermostat opens automatically and has to be reset manually 1 Disconnect the power supply After this the thermostat can either be Reset from the front of the dryer 2a Pull out lint drawer A 3a Dismount grille B The thermostat can now be reset manually by pressing on the tab on the back of the holder Reset from the back of the dryer 2b By dismoun...

Page 61: ...rcuit board turns the heating unit off when the outlet air thermistor indicates that the required temperature has been reached The resistance of this device is normally 80 to 100 kOhms at 20 C 68F and it drops as its temperature increases The sensor A is mounted on the same bracket as the outlet air overheating thermostat Error codes The following error codes are related to this section E02 E04 E1...

Page 62: ...he body of the dryer should be approx 7 mm 1 4 inch If the distance is too big the vacuum shutter may not close properly Fig 1 Vacuum shutter and shutter switch are located behind plate A Fig 2 The top screw on the switch see arrow is used for adjusting the vacuum shutter distance from the body of the dryer Error codes The following error codes are related to this section E15 E16 Refer to section ...

Page 63: ...487 0329 21 29 1 29 Door and lint drawer 29 Service manual Contents Loading door switch 29 2 Lint drawer switch 29 3 ...

Page 64: ...he wires 7 Re assemble and test the new door switch as follows Testing the door switch 1 Connect the power supply 2 Start the dryer 3 Check that the fan drum rotation and heat all stop when the door is opened max 10 mm 3 8 If it is possible to open the door more than 10 mm 3 8 before the dryer shuts off it is necessary to adjust the activating pin on the door fig 1 1 On some models On some models ...

Page 65: ... bracket 6 Connect wires to the new switch 7 Remount the bracket with the new switch 8 Remount back panel A Testing the lint drawer switch 1 Connect the power supply 2 Start the dryer 3 If the dryer does not start when the drawer is closed and the Start button is pressed check that the tab on the lint drawer is pressing the lever on the lint drawer switch 4 Confirm that the fan drum and heat all s...

Page 66: ...29 Door and lint drawer 29 Service manual 487 0329 21 29 4 ...

Page 67: ...eplacement of drum motor belt 30 4 Replacement of drum motor 30 5 Replacement of bearings 30 6 Mounting of transmission module 30 7 Blower motor general 30 8 Blower motor with fan wheel 30 8 Dismounting of blower motor with fan wheel 30 9 Replacement of blower motor 30 9 Replacement of fan wheel 30 9 Mounting of blower motor and fan wheel 30 10 ...

Page 68: ...dryer and is mounted on the transmission support plate Motors for reversing except USA On dryers where the drum reverses the reversing action is controlled by two contactors The contactors switch the phase sequence The contactors are located inside the control console at the rear of the machine Transmission module The transmission module must be dismounted when repairs are necessary Fig 1 After di...

Page 69: ...on module A B 1 2 3 1 Switch off the power to the dryer 2 Fig 1 Remove the back plate see arrow 3 Fig 2 Remove belt tensioner A 4 Lift the drum belt off the pulley 5 Disconnect the motor plug 6 Remove screws B along the edge 5 pcs 7 Fig 3 Lift off the transmission module ...

Page 70: ... Dismounting of transmission module 1 Fig 1 Loosen 3 screws C please note that the third screw is underneath the module 2 Replace the belt 3 Pull the motor pulley and transmission pulley apart until the belt is tight 4 Tighten the screws After Replacement of drum motor belt see section Mounting of transmission module 1 C ...

Page 71: ...for reuse On the new motor 3 Fig 2 Lube the shaft at the motor A with anti fretting paste 4 Fit the pulley to the shaft and seal the pointed screws with a screw protection product such as Omnifit Seal 40M or similar quality 5 Mount the new motor on the transmission module check the motor data plate for proper voltage and speed as compared to the old motor 6 Mount the cooling fan housing After Repl...

Page 72: ... the bearings with anti fretting paste 3 Fit the new ball bearings B Fasten pointed screws at 5 Nm 44 2 in lbs 4 Seal with a screw protection product such as Omnifit Seal 40M or similar quality 5 Fit the transmission pulley lubricate shaft with anti fretting paste 6 Mount the drum motor belt see section Replacement of drum motor belt After Replacement of bearings see section Mounting of transmissi...

Page 73: ... NOTE It is important to fit the belt at the right place on the pulley The small diameter of the pulley is used for 60 Hz The large diameter of the pulley is used for 50 Hz 3 Fig 1 Fit belt tensioner and tighten until the spring has a length x of 130 mm 5 5 inches 3 16 inch 4 Assemble the dryer 5 Switch on the power Function check Test the dryer see section 11 Function check A 1 x ...

Page 74: ...itch inside the motor windings re closes automatically when the motor cools sufficiently The dryer can then be re started The fan wheel is fitted directly on the blower motor shaft Dismount the blower motor together with the fan wheel Blower motor with fan wheel Fig 1 After dismounting it is possible to replace a Blower motor b Fan wheel Error code The following error code is related to this secti...

Page 75: ...cover A 3 Fig 3 Unplug the blower motor B 4 Fig 3 Remove the four Nylock nuts C that secure the blower motor mounting plate to the dryer and remove the blower motor and fan wheel assembly 5 Fig 4 The blower motor module 6 Following can be replaced The motor can be replaced when the cooling fan cover is removed D The fan wheel can be replaced C D 1 3 4 2 A A B ...

Page 76: ...king care to orient it properly for re assembly to the dryer Protect the screws with Omnifit Seal 40M 3 Fit fan wheel B and protect the pointed screw of the fan wheel with Omnifet Seal 40M or similar quality 4 Re install blower and fan wheel in the reverse order See dismounting of blower motor with fan wheel 5 Assemble the dryer 6 Switch on power to the dryer and test Function check Test the dryer...

Page 77: ...ents Dismounting of the gas heating unit 40 2 Replacement of gas burner tube 40 5 Adjustment of ignition electrode 40 6 Replacement of gasvalve 40 7 Re mounting the gas heating unit 40 8 Resetting gas error 40 9 Conversion to another type of gas 40 10 ...

Page 78: ...r Refering to pictures following pages 3 Fig 1 Remove the 8 screws A which secure the control compartment cover and then remove the cover Loosen screw B which secure the unit to the dryer 4 Fig 2 Remove screw C in the connection unit console 5 Fig 3 Remove 4 screws D at the top of the unit 6 Fig 4 Disconnect the gas pipe union 7 Fig 5 Disconnect the temperature sensor plug 8 Fig 6 Dismount the gas...

Page 79: ...487 0329 21 40 3 40 Heating 40 Service manual Dismounting of the heating unit 1 2 4 3 5 A A A A A A A C D D A Control compartment cover B To be continued on the following page ...

Page 80: ...40 Heating 40 Service manual 487 0329 21 40 4 I III II 6 7 Dismounting of the heating unit ...

Page 81: ...holder out of the heating unit 4 Dismount nozzle lock plate air flow reducing plate holder with electrode fitted and remove the burner tube 5 Fig 2 Remove nut C on the old burner and screw it onto the new one Don t screw it all the way in but leave room for fitting D 6 Fig 2 Install the new burner tube The burner is mounted correctly when it is controlled by fitting D 7 Mount all the parts from st...

Page 82: ...21 40 6 Adjustment of ignition electrode Fig 1 Illustrates proper ignition electrode adjustment Dimension a The distance from the electrode to the burner tube a must be 5 mm 13 64 inch Dimension b The spark gab b must be 3 mm 1 8 inch 1 a b ...

Page 83: ...tact and placed as shown below 6 Screw the screws back into the flanges Remember to tighten the screws diagonally 7 Push the control box back into place Be careful not to bend the terminals 8 Install the controlbox retaining screw removed in step 1 Testing for leaks If the replacement has taken place without the gas heating unit being demounted all the joints which were taken apart have to be leak...

Page 84: ...onto the dryer replacing all screws removed earlier 3 Fig 6 Reconnect the ignition and sensor cables 4 Fig 5 Reconnect the gas union 5 Fig 4 Tighten this fitting securely 6 Re connect the temperature sensor plug 7 After re installing the burner assembly all the joints which were taken apart need leak testing Use approved materials and techniques for leak testing 8 Fig 1 3 Install the control compa...

Page 85: ...manually Resetting Fig 1 Open the operating panel and press the gas reset button on the back of the user module board for one second NOTE When resetting the system the dryer must operate on a program with heat and when the heat indicator is on Error code Error code 14 is a normal occurance when first starting up a dryer since air in the gas line must be purged If the problem persists refer to Erro...

Page 86: ...on is equipped for natural gas If the machine is to be converted to another type of gas the gas nozzle must be replaced The current nozzle can be ordered separately in a conversion kit Refering to the Installations manual supplied with the dryer The conversion kit contains 2 nozzles as well as instructions ...

Page 87: ...487 0329 21 42 1 42 Drum with bearing 42 Service manual Contents Dismounting of drum 42 2 Replacement of drum belt 42 2 Mounting of drum 42 4 Replacement of support rollers 42 6 ...

Page 88: ...ottom hinge 3 Remove the screws that hold the front panel on the dryer and remove the panel 4 Unscrew the 3 screws at the bearing cover and remove the bearing cover at the rear of the drum 5 Fig 4 Unscrew and remove bolt and washer from the main drum bearing 6 Fig 5 Pull out the drum Replacement of belt 1 Remove belt if defective 2 Fig 6 Hang the new belt on the felt seal flange at the back of the...

Page 89: ...487 0329 21 42 3 42 Drum with bearing 42 Service manual A Dismounting of drum replacement of drum belt 3 4 5 6 7 B C ...

Page 90: ...t onto the drum as follows 4 Use the hole at the top to put the new belt on the drum 5 Fig 4 Place the belt around the pulley at the transmission NOTE It is important to fit the belt at the right place on the pulley The small diameter is used for 60 Hz The large diameter is used for 50 Hz 6 Turn the drum until the belt is in the proper position on the drum and on the pulley 7 Fig 5 Fasten the belt...

Page 91: ...487 0329 21 42 5 42 Drum with bearing 42 Service manual 1 Mounting of drum 2 3 4 20Nm 15 ft lb 60Hz 50Hz 5 130 mm 5 5 inches 3 16 inch B A ...

Page 92: ... top door hinge 3 Lift the door off the bottom hinge remove bottom hinge 4 Fig 1 Remove the screws that hold the front panel on the dryer and remove the panel 5 Fig 2 Unscrew bolts at support rollers 6 Replace support rollers and tighten with 20 Nm 15 ft lb 7 Reassemble the front panel door hinges and door 8 Connect the power Function check Test the dryer see section 11 Function check 2 1 20 Nm 15...

Page 93: ...FIRE AND OR EXPLOSION HAZARD Gas heating system service procedures must be carried out by qualified service personnel DO NOT OPERATE THIS MACHINE WITH IMPROPER SUPPLY OR NOZZLE PRESSURES AS THIS CAN CAUSE FIRE AND OR EXPLOSION Improper installation adjustment or operation of this gas heated appliance may result in the risk of fire and or explosion damage to property serious injury or death ...

Page 94: ...g screw 4 found behind cover screw 3 Clockwise higher pressure Counter clockwise lower pressure Pos 5 Control box gas valve Pos 6 Measuring tap supply pressure Measuring see page 47 4 Supply pressure see installation manual NOTE that the gas supply MUST be turned off before loosening tap pos 6 SUPPLY or gas will escape Pos 7 Primary air flow reducing plate An air reducing plate has been installed ...

Page 95: ... high nozzle pressure If the nozzle pressure is too high adjust it by removing the cap pos 3 and turning the screw pos 4 beneath this cap counter clockwise until the nozzle pressure is correct Too low nozzle pressure If the nozzle pressure is too low it may be due to limited gas flow and pressure on the supply side of the valve 1 Turn off the dryer 2 Close the nozzle pressure measuring tap pos 2 a...

Page 96: ...eat 2 Loosen the gas pressure tap pos 6 one quarter of a turn and connect a manometer to the tap 3 Turn on the manual gas supply valve 4 Start the dryer on High heat and check that the supply pressure is within the allowable range Note If the pressure is not within the range specified in the installation manual DO NOT OPERATE THE DRYER Contact your gas supplier NOTE that the gas supply MUST be tur...

Page 97: ...487 0329 21 47 5 47 Gas system 47 Service manual Gas system overview Connected to the gas supply Top dryer Bottom dryer Nozzle Gas valve Top dryer Gas valve Bottom dryer Nozzle ...

Page 98: ...Test run Test all joints for leaks Before operating the dryer with a flame check the supply and nozzle pressures as described earlier in this section Check that the gas is burning evenly and with a bluish flame After testing prepare the dryer for use ...

Page 99: ...487 0329 21 47 7 47 Gas system 47 Service manual ...

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