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Despatch LCC 1-11, Инструкция по эксплуатации, Страница: 36 / 49

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27 

Fan Motor 

 
(Tools needed:  Screwdriver, Allen wrench, crescent wrench) 
 
1. 

Disconnect power. 

 
2. 

Remove filter cover and filter from left side. 

 
3. 

Remove floor plate. 

 

a. 

Remove screws from the floor plate.   

 

b. 

Lift floor plate out of the oven. 

 
4. 

Remove the screws from the heater frame then tip up and to the right. 

 
5. 

Loosen set screws on fan wheel inside fan housing. 

 
6. 

Remove the screws from the face of the control panel and slide it forward to 
uncover motor. 

 
7. 

Tip oven on its back. 

 
8. 

Remove outside floor. 

 
9. 

Unbolt the four bolts holding the motor to the motor mount. 

 
10. 

Remove motor.  After fan wheel has run at temperature for a while it will stick to 
the shaft.  Some force may be required to separate the two.  Suggest holding the 
fan wheel against the insulated wall while using a mallet and center punch to 
loosen the shaft from the fan. 

 
11. 

Disconnect motor leads from terminal block. 

 
12. 

Hold new motor in place while you remount fan wheel to motor shaft.  Reattach 
motor to motor mount. 

 
13. 

Attach motor lead wires to terminal block (see wiring diagram). 

 
14. 

Replace oven control panel and bottom, then tip oven upright again. 

 
15. 

Adjust fan wheel for 3/16 inch clearance between wheel and inlet ring. 

Содержание LCC 1-11

Страница 1: ... 2 LCC 1 11N 240 1 50 60 3 000 14 2 LCC 1 54 240 1 50 60 6 000 26 7 LCC 1 54N 240 1 50 60 6 000 26 7 LCC 1 54NV 240 1 50 60 6 000 26 7 LCC 1 87 240 1 50 60 9 000 42 2 LCC 1 87N 240 1 50 60 9 000 42 2 LCC 1 87NV 240 1 50 60 9 000 42 2 Prepared by Despatch Industries P O Box 1320 Minneapolis MN 55420 1320 Customer Service 800 473 7373 ...

Страница 2: ... Response Center at 1 800 473 7373 FAX 612 781 5353 Thank you for choosing Despatch Sincerely Despatch Industries Notice Users of this equipment must comply with operating procedures and training of operation personnel as required by the Occupational Safety and Health Act OSHA of 1970 Section 6 and relevant safety standards as well as other safety rules and regulations of state and local governmen...

Страница 3: ......

Страница 4: ......

Страница 5: ...es An efficient way to learn about the oven would be to read the manual while working with the corresponding oven control system This will give you practical hands on experience with information in the manual and the oven Before operating the equipment be sure you understand all of the technical information contained in this manual Information skipped not understood or misunderstood could create t...

Страница 6: ...ii ...

Страница 7: ...8 D O P Testing 8 Class 100 Testing 8 Validation Testing 9 The Necessity of the Burn off Process 9 Filter Unit Replacement 9 CONTROL Instrument 10 HIGH LIMIT Instrument 10 Product High Limit Instrument 10 Oven High Limit Instrument 11 INSTRUCTIONS 12 Unpacking and Inspection 12 Set up 13 HEPA Filter Installation 15 HEPA Filter Burn off 16 OPERATING 18 Loading the Oven 18 Pre Startup Checklist 19 S...

Страница 8: ...afety Controls 25 Replacement 26 Parts 26 CONTROL Instrument 26 Fan Motor 27 Replacing HIGH LIMIT 28 Thermocouple Break Protection 29 Replacing the Thermocouple 29 Heater Unit 30 APPENDIX 31 Troubleshooting 31 Factory Installed Options 33 Drawings 34 ...

Страница 9: ...v ...

Страница 10: ... chamber workload as well as the oven itself Stainless steel interior with all interior seams continuously welded on the insulation side to protect the work chamber from contamination and to permit chamber washing without damaging insulation Silicon door seals shaft seals and gasketing Viton Fluorocarbon on NV models Door seals and interior chamber walls are removable for cleaning Heater with a fi...

Страница 11: ... 25 14 35 14 35 1 1 31 25 64 21 53 32 81 5 LCC 1 11N 10 25 14 35 14 35 1 1 31 26 66 21 53 32 81 5 LCC 1 54 18 46 20 51 26 66 5 4 153 34 153 29 74 43 109 11 LCC 1 54N LCC 1 54NV 18 46 20 51 26 66 5 4 153 34 153 29 74 43 109 11 LCC 1 87 22 56 20 51 34 86 8 7 248 39 99 29 74 52 132 14 LCC 1 87N LCC 1 87NV 22 56 20 51 34 86 8 7 248 39 99 29 74 52 132 14 ...

Страница 12: ...ame plate rating the motor may run hot and draw excessive amps If the line voltage varies more than 10 from the oven voltage rating some electrical components such as relays temperature controls etc may operate erratically Model Volts Amps Hertz Heater Phase KW Cord and Plug LCC 1 11 240 14 2 50 60 1 3 None Hardwired LCC 1 11N 240 14 2 50 60 1 3 None Hardwired LCC 1 54 240 26 7 50 60 1 6 None Hard...

Страница 13: ... 3 3 3 Temperature Uniformity at maximum 125 C 1 C 1 C 2 C 2 C 1 C 1 C 200 C 2 C 2 C 2 C 2 C 2 C 2 C 260 C 3 C 3 C 3 C 3 C 3 C 3 C Maximum Operating Temperature 260 C 260 C 260 C 260 C 260 C 260 C Minimum Operating Temperature Above Ambient approximate Without Water Cooling 48 C 53 C 34 C 85 C 54 C 116 C With Water Cooling 9 C 9 C 18 C 18 C 35 C 40 C Cooling Time Empty Oven approximate minutes 200...

Страница 14: ...EPA High Efficiency Particulate Air filtration This oven is ideal for processes where minimization of contamination is essential Forced convected airflow provides rapid uniform distribution of heat An absolute HEPA High Efficiency Particulate Air filter is mounted in a stainless steel frame in the supply plenum These filters are 99 97 effective in filtering 0 3 micron particles ...

Страница 15: ...s are mounted on the front of the oven for easy operation and readability Two electropolished stainless steel wire shelves are provided The shelves are removable and adjustable on two inch centers Cooling Air models have an adjustable fresh air damper which allows cooling of the oven Nitrogen models have a stainless steel water coil When used in conjunction with the optional flowmeter the cooling ...

Страница 16: ... various approaches for internal strengthening and impact resistance of the container The shipping carton normally is marked with a vertical arrow and This Side Up A filter unit is placed in the carton so that the pleated folds are vertical running from top to bottom not side to side Filters should be shipped handled and stored with the pleats in the vertical position If shipped with the pleats in...

Страница 17: ...spatch guarantees that the filters will meet specified efficiency ratings when the filter is properly installed run at or below 200 C at a constant temperature run before burn in D O P Testing In D O P testing aerosol particles of submicron size are used to spot defects or measure filter efficiency Degenerative by products of this test are distributed throughout the oven chamber upon heat up There...

Страница 18: ...re a clean process at elevated temperatures When the binder is burned out of the filter media the filter becomes very fragile too fragile to withstand normal shipping and handling For this reason Despatch does not perform the burn off procedure Filter Unit Replacement Replacement of the filter unit will be necessary for various reasons Resistance or pressure drop across the filter unit Maximum lev...

Страница 19: ...r to a temperature that should not be exceeded in the process The instrument must be manually reset by pushing the red button Product High Limit Instrument If the product being processed has a critical high temperature limit the HIGH LIMIT instrument should be used as a product high limit instrument The HIGH LIMIT instrument should be set to a temperature somewhat below the temperature at which th...

Страница 20: ...MIT instrument protects oven equipment Since the HIGH LIMIT instrument does not show the temperature it can be properly set only after oven is in operation Until then the HIGH LIMIT should be set at maximum position so all preliminary testing and adjusting can be done Never operate the oven at a temperature in excess of the maximum operating temperature of 260 C 500 F ...

Страница 21: ... door and latch for smooth operation Check the filter carton for damage If there is damage that could have happened during shipment follow these instructions 1 Contact the shipper immediately and file a written damage claim 2 Contact Despatch Industries to report your findings and to order replacement parts for those that were damaged or missing 3 Please send a copy of your filed damage claims to ...

Страница 22: ...plant nitrogen system to the inlet marked nitrogen supply on the oven rear panel The nitrogen supply to the oven must not exceed 40 PSI 6 Nitrogen models only Install water connection for cooling coils a Pipe the coil with a three way water supply drain valve on the inlet bottom fitting and a vacuum breaker valve at the high point of the drain line This will keep water moving through the cooling c...

Страница 23: ... steam generation are dependent on cooling water flow rate Recommended flow rate is 50 gallons per hour c The pipe on the rear of the oven marked WATER DRAIN should be piped to a vacuum breaker and then to an open drain WARNING never allow drain to be plugged as a hot oven will generate a small amount of steam when the water is first turned on Steam burns WARNING All grounding and safety equipment...

Страница 24: ...he carton b Tilt the carton on one corner Be sure to handle the carton at opposing corners c Remove the sealing tape and fold the flaps of the carton back d Gently upend the filter to place the exposed end of the filter on the floor Do not jar the filter e Pull the carton from the filter unit Do not pull the filter from the carton 2 Inspect the filter Use a strong lamp to examine the exposed areas...

Страница 25: ...ng at a temperature of 260 C 500 F for eight 8 to 48 forty eight hours After eight hours 6 7 of the total media weight is lost 11 2 after 24 hours and 16 0 after 48 hours Check the oven for particles or the exhaust for smoke and odor to determine that the process is finished Significant advantage in paper strength and shedding characteristics is obtained for some filters if some of the binder is l...

Страница 26: ...ke and odor outside or to a highly ventilated area 2 Filters for 260 C 500 F and below Set the temperature control at the maximum process temperature Filters for above 260 C 500 F To maximize the life of the filter set the control to ramp the oven temperature at 1 C 1 8 F per minute or slower Program a 3 hour soak at 75 C 167 F and a 3 5 hour soak at 105 C 220 F during the first heating ramp The l...

Страница 27: ...ocessing in a Despatch oven is adequately protected from damage Carefully following the instructions in this manual will help the purchaser and operator in fulfilling that responsibility When loading the oven avoid spills of anything onto the heater elements or onto the floor of the oven Do not place the load on the oven floor plate This may cause the load to heat unevenly and the weight may cause...

Страница 28: ...time close the vent fresh air models After desired temperature is reached vent may be adjusted as needed 1 Start fan a Open oven door b Press POWER toggle switch to the ON position You will hear the recirculating fan start c Shut oven door d Check that the amber LED on the CONTROL panel is on 2 Enter setpoint on the CONTROL instrument 3 Set HIGH LIMIT instrument to a temperature 10 C 15 C higher t...

Страница 29: ...ng the oven without the optional water cooling the minimum operating temperature is approximately 78 C nitrogen models and approximately 20 C non nitrogen models over the ambient room temperature This is the result of the heat generated by the recirculating fan NOTE This graph is an approximate measure Actual conditions will vary The grade of the inlet gas used will also affect performance ...

Страница 30: ...ater as needed and the heater indicator light will flash on and off 6 To cool down the oven set the control to a lower temperature If necessary turn on water supply to the cooling coil or the valve on the face of the optional cooling water flowmeter On fresh air models you may open the fresh air damper by adjusting the damper control knob The water cooling coil should be used when cooling a load i...

Страница 31: ...mplete 2 Do not turn the power off until the oven temperature is below 150 C 302 F If the oven is turned off before it is properly cooled the fan shaft and motor bearings may become overheated shortening the life of the motor 3 Turn the nitrogen control valve to OFF nitrogen models 4 Turn off the water supply to the cooling coil or the valve on the face of the optional cooling water flowmeter nitr...

Страница 32: ...particularly true of controls motors or other equipment containing electronic components Temperatures greater than 51 5 C 125 F should be avoided Establish maintenance checkup schedules Do this promptly and follow the schedules faithfully Careful operation and maintenance will be more than paid for in continuous safe and economical operation Maintain equipment in good repair Make repairs immediate...

Страница 33: ...vent the possibility of suffocation in a small work area in which a nitrogen leak might displace much of the oxygen in the atmosphere Control Output Check 1 On a cool oven 100 C or 212 F adjust CONTROL setpoint to 20 F 11 C higher than current actual chamber temperature 2 Set HEATER switch to ON 3 When the CONTROL output indicator light is on the HEATER indicator should also be on 4 When the CONTR...

Страница 34: ...em regularly The safety of personnel as well as the equipment may depend upon the proper operation of any one of these controls at any time Temperature Control every 40 hours The heater indicator light should flash every 1 to 2 seconds when the control is operating at a steady set point temperature HIGH LIMIT every 40 hours With the oven operating at a given temperature gradually lower the high li...

Страница 35: ...e process of obtaining your replacement part CONTROL Instrument Tools needed one quarter inch socket set 1 Disconnect power 2 Remove screws from the face of the control panel and slide it forward 3 Remove wires from the old control noting which numbered wires connect to which terminals 4 Replace old control with new control 5 Reattach wires to the new CONTROL instrument Make sure that the wires ar...

Страница 36: ...loor 9 Unbolt the four bolts holding the motor to the motor mount 10 Remove motor After fan wheel has run at temperature for a while it will stick to the shaft Some force may be required to separate the two Suggest holding the fan wheel against the insulated wall while using a mallet and center punch to loosen the shaft from the fan 11 Disconnect motor leads from terminal block 12 Hold new motor i...

Страница 37: ...LIMIT Tools needed Screwdriver one quarter inch socket set 1 Disconnect power 2 Remove screws from face of control panel and slide it forward 3 Remove wires from HIGH LIMIT noting which numbered wires connect to which terminals Refer to wiring diagram in this manual 4 Replace old HIGH LIMIT with new HIGH LIMIT 5 Reattach wires to the new HIGH LIMIT Make sure the wires are connected correctly 6 Rep...

Страница 38: ...r and remove screws from the face of the control panel and slide it forward 2 Locate thermocouple along the left side of the control chamber 3 Loosen the nut on the fitting holding the thermocouple in place 4 Pull thermocouple out of brass fitting 5 Feed new thermocouple through the nut and ferrule and place back into the fitting 6 Re tighten the fitting nut 7 Remove old thermocouple from terminal...

Страница 39: ...the floor plate b Lift floor plate out of the oven 4 Disconnect heater leads from heater element with wrench Note which wires go on which terminals 5 Unscrew screws holding the frame to the oven body 6 Remove heater and discard 7 Screw down new heater frame 8 Attach heater leads to appropriate terminals 9 Replace interior floor and screws 10 Replace filter and filter cover 11 Reconnect power ...

Страница 40: ...ute load in chamber Low line voltage Supply sufficient power and proper connections Check to see if circuit is overloaded Heating elements Replace burned out element s see warranty statement 240 volt oven is connected to a 208 volt line Consult with factory Fan motor failure Replace fan motor Water flow in optional cooling coil Shut water off Filter clogged Replace filter see section on HEPA filte...

Страница 41: ...of calibration Recalibrate the HIGH LIMIT Solid state relay malfunction Replace solid state relay Control instrument malfunction See troubleshooting information in CONTROL instrument manual Air friction of recirculation fan The minimum operating temperature is around 65 C above ambient room temperature Use optional water cooling coil Heater does not shut off until the temperature reaches the high ...

Страница 42: ...e a HIGH LIMIT condition or the end of a process cycle Auto nitrogen Solenoid valves actuate the purge and maintain flows of nitrogen Valves are controlled by event outputs on the control instrument or by a switch on the control panel Auto H20 Solenoid valves actuate the cooling water flow Valves are controlled by event output on the control instrument or by a switch on the control panel Includes ...

Страница 43: ...1 2 LCC 1 11N 2 Digitronic Controller DA351 080928J00 MIC1462 Controller DA351 140028B00 LCC 1 54 2 LCC 1 54N 2 LCC 1 54NV 2 Digitronic Controller CA351 054552T00 MIC1462 Controller DA351 140029B00 LCC 1 87 2 LCC 1 87N 2 LCC 1 87NV 2 Digitronic Controller CA368 081389I00 MIC1462 Controller DA351 140030B00 ...

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