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13.0 Specifications

13.0

Specifications

Carbolite Gero reserves the right to change the specification without notice.

Model

Max

Temp

(°C)

Max

Power

(kW)

Work Tube

Bore

(mm)

Recommended Work Tube

Length for use in air (mm)

Heated

Length

(mm)

Net

Weight

(kg)

3-zone Split Tube furnaces heated by resistance wire moulded in refractory fibre

HZS
12/900

1200

4.5

110

1050

900

Note:

Weights are approximate for horizontal models and do not include fittings or

vertical stands.

13.1

Environment

The models listed in this manual contains electrical parts and should be stored and used
in indoor conditions as follows:

Temperature:

5 °C - 40 °C

Relative
humidity:

Maximum 80 % up to 31 °C decreasing linearly to 50 % at 40
°C

Содержание HZS 12/900

Страница 1: ... Operation and Maintenance Instructions 1200 C Split Tube Furnace HZS Model 900mm 3508 Controller 2132 End Zone Controllers HZS 12 900 3508 Controller 2132 End Zone Controllers MEN HZS120900 08_3508_2132 02 08 2019 ...

Страница 2: ...Connections 11 3 0 3508 Controller 14 3 1 PID control 14 3 2 3508P1 14 3 3 3508P10 14 3 4 3508P25 14 3 5 Basic Operation 15 3 5 1 Controller Layout 16 3 5 2 Keys 16 3 6 Quick Start Guide 16 3 6 1 Operation as a simple controller 16 3 6 2 Changing the Setpoint 16 3 6 3 Resetting the programmer 17 3 6 4 Understanding User Levels 17 3 7 Setting Up Controller 18 3 7 1 Maximum output power setting 18 3...

Страница 3: ...on Diagrams 32 3 11 1 Operator Level 1 No Program Running 33 3 11 2 Operator Level 1 Program Running 34 3 11 3 Supervisor Level 2 35 4 0 3508 Dual Loop Cascade Control if fitted 36 4 1 Principle of Cascade Control 36 4 2 Operation of Cascade Control 36 4 3 Bypassing Cascade Control 40 4 4 3508P1 Element Loop Loop 2 40 4 5 Caution 40 4 6 Over Temperature Control 40 5 0 2132 Controller 41 5 1 Descri...

Страница 4: ...erature Operation 55 6 2 4 Over Temperature Alarm 55 6 2 5 Resetting the Over Temperature Alarm 55 6 2 6 Sensor Break 55 6 3 Audible Alarm 56 6 4 Navigation Diagram 56 7 0 Operation 57 7 1 Operating Cycle 57 7 2 Control Method 57 7 3 3 Zone Control Methods 58 A Back to Back Thermocouples 59 B Retransmission of Setpoint 59 C Independent Control 60 7 4 General Operating Advice 60 7 5 Operator Safety...

Страница 5: ...8 9 6 Fuse Replacement 68 9 7 Element Replacement 69 10 0 Fault Analysis 70 A Furnace Does Not Heat Up 70 B Product Overheats 71 11 0 Wiring Diagrams 72 11 1 WC 13 70 72 11 2 WC 13 71 73 11 3 2 and 3 phase With Neutral 74 11 4 Independent Zones control method C 74 11 5 Control by Broadcast Comms control method B 74 11 6 Three phase without neutral star e g 380 415 V 74 11 7 Higher Voltages 75 12 0...

Страница 6: ...d to the elements Heat switch the switch disconnects power to the heating elements unless this switch is OFF there is a danger of electric shock when inserting objects into the product 1 2 General Warnings DANGER Electric shock Read any warning printed next to this symbol WARNING Risk of fatal injury DANGER Hot surface Read any warning printed next to this symbol WARNING All surfaces of a product ...

Страница 7: ...Caution Double Pole Neutral Fusing 7 1 0 Symbols and Warnings ...

Страница 8: ...of heat and on a non flammable surface that is resistant to accidental spillage or hot materials The surface on which the equipment is mounted should be stable and not subject to movement or vibrations The height of the mounting surface is important to avoid operator strain when loading and unloading samples Unless otherwise stated elsewhere in this manual ensure that there is at least 150 mm of f...

Страница 9: ...on shields is similar to that of plugs If stainless steel seals with gas inlets are supplied they are to be fitted as shown in fig 3 the stem of any insulating plug should touch the seal For vertical models with stainless steel seals a hook and eye arrangement holds the upper insulating plug assembly Horizontal models if heavy fittings are to be clamped to the end of an extended work tube they can...

Страница 10: ...2 0 Installation Fig 1 Insulating Plug standard length tube Key A Tube B Insulating Plug C Stem Fig 2 Insulating Plug long work tube 10 ...

Страница 11: ...p End Seal For assembly details refer to the separate work tube end seal manual Under no circumstances should any objects be placed on top of the product Always ensure that any vents on the top of the product are clear of any obstruction Always ensure all cooling vents and cooling fans if fitted are clear of any obstruction 2 3 Electrical Connections Connection by a qualified electrician is recomm...

Страница 12: ...ctory fitted supply cable are designed to be wired directly to an isolator or fitted with a line plug Products without a factory fitted supply cable require a permanent connection to a fused and isolated supply The product s electrical access panel should be temporarily removed and connections made to the internal terminals If the product is to be connected by line plug The plug should be within r...

Страница 13: ...o phase 2 L3 Black to phase 3 N Light Blue to neutral except delta PE Green Yellow to earth ground DO NOT connect a product ordered for three phase use to a single phase supply or to the wrong type of three phase supply 13 2 0 Installation ...

Страница 14: ... give excellent temperature control when properly set This controller can store 10 programs of up to 50 segments each Programs can be operated individually or linked by a Call parameter as sub programs or to form single long programs The 3508P10 can also be used as a simple temperature controller 3 4 3508P25 The 3508P25 is a digital temperature controller which uses PID algorithms to give excellen...

Страница 15: ...or C Not Used D Runs Holds Resets the current program E Page F Scroll G Down H Up I Power Output Percentage J Program Setpoint Temperature PSP when a program is running K Setpoint Temperature SP when basic controlling L Measurement Temperature 15 3 0 3508 Controller ...

Страница 16: ... Quick Start Guide 3 6 1 Operation as a simple controller When switched on the controller goes through a short test routine and then shows the measured temperature Below it the setpoint temperature SP and percentage of power output The controller will immediately attempt to reach the set temperature and maintain it This will cause the product to heat as quickly as possible which may not be appropr...

Страница 17: ...ly when a program is operating To pause the program press RUN HOLD To stop the program and return to simple controlling reset press RUN HOLD for 2 seconds When the program ends the programmer will either Automatically reset to operation as a simple controller Dwell at the last temperature of the program with the RUN indicator flashing until the operator presses RUN HOLD for 2 seconds to manually r...

Страница 18: ... now in level 1 3 7 Setting Up Controller Before using the controller or during its lifetime certain parameters may have to be set depending on specific requirements To do this the controller must be set to Supervisor Level 2 see Controller Navigation Diagrams 3 7 1 Maximum output power setting Press page until Control Output Hi is displayed Press up or down to adjust the value Depending on the pr...

Страница 19: ...e End type Dwell For the P10 and P25 programs can be linked together using a Call segment However a lower number program can not be called and a program can not be ended with a call segment A program can be ended in four ways 1 With End segment set to S OP the power to the elements is turned down to 0 no matter what the Setpoint temperature is 2 With End segment set to Reset and the Setpoint tempe...

Страница 20: ...eating only High Applies to cooling only Band Applies to both heating and cooling Off Holdback is switched off To set the holdback type press page twice then press scroll until the display shows Holdback Type for each segment and press up or down to set The default setting for holdback is OFF 3 8 3 Wait Segments Wait prevents the program proceeding to the next segment in a similar way to holdback ...

Страница 21: ...times to get to the programming page the display will show ProgEdit 1 Program number On P10 or P25 models press up or down to select a new program number The display will show that new programs have only one segment Holdback Value Press scroll until the display shows Holdback Value If required Press up or down to set a value This value will be used in any segment where a Holdback Type is set Ramp ...

Страница 22: ...ows Wait For Press up or down to select PrgIn1 PrgIn2 PrgIn1In2 PrgIn1orIn2 PVWaitIP GoBack to segment number visible only for GoBack segments Press scroll until the display shows GoBack Seg Press down to select a segment number to go back to GoBack Cycles visible only for GoBack segments Press scroll until the display shows GoBack Cycles Press up or down to set a value Call Cycles Visible only fo...

Страница 23: ...o select a program Press page until Program Status Reset appears Press scroll then up or down to select a program number To operate the program Press RUN HOLD or Press scroll until the cursor moves to Reset Press up or down to select Run Run will be displayed 3 8 10 Program Status While a program is operating the home display shows 3 values l Top Measured temperature l Centre Program Setpoint PSP ...

Страница 24: ...started again by pressing the RUN HLD button the HLD indicator will flash again if the measured temperature has not caught up with the program Programming note For P10 and P25 models other programs can be created or changed whilst the current program is operating 3 8 12 Power Failure Recovery If there is a power interruption to the controller during a program when power is restored the controller ...

Страница 25: ...cally below 1 Turn the controller SP down to 0 by pressing down 2 Press page until Prog Segments Used is displayed On P10 or P25 models press up or down to select a new program number a program with only 1 segment 3 Press scroll until Holdback Value is displayed Default 0 degrees 4 Press scroll until Ramp Units is displayed Press up or down to set to Min 5 Press scroll until Cycles is displayed De...

Страница 26: ...l until End Type is displayed Press up or down to select Reset 13 Press page and scroll together to return to the home display To run the program either press RUN HOLD or 14 Press page until Program Status is displayed 15 Press scroll until the cursor moves to the program status of Reset 16 Press to select Run 26 ...

Страница 27: ...Program Example 2 The following sequence of entries creates and runs the program shown graphically below 1 Turn the Setpoint to 0 by pressing down 2 Press page until Prog Segments Used is displayed On P10 and P25 models press up or down to select a new program number a program with only 1 segment 3 Press scroll until Holdback Value is displayed Press up or down to set to 5 degrees 4 Press scroll u...

Страница 28: ...am models Segment Type Rate Target SP 400 degrees Ramp Rate 2 0 degrees per minute Segment Type Step Target SP 200 degrees Segment Type Dwell Holdback High Duration 30 00 0 minutes Segment Type Call Call Prog next number Call Cycles 2 Finish the program with an End segment 11 Press scroll until Segment Type is displayed Press up or down to select End 12 Press scroll until End Type is displayed Pre...

Страница 29: ...lue 5 C P10 and P25 only Program 3 Example 3 9 Controller Options As options can be ordered in a variety of combinations and for a variety of purposes exact instructions are not given here The full Eurotherm manual may be required to determine customer parameter settings To reveal or hide parameters in the controllers it is necessary to go into configuration mode a security code is needed Please c...

Страница 30: ... together 1 4 6 6 8 20 Link together 3 9 2 Digital Communications RS485 If an RS485 option is supplied the furnace is fitted with two D sockets Connection between products is by straight cable as follows Product end of cable female 25 pin 9 pin RS485 Cable product to PC Computer end of cable 9 pin 25 pin female 2 3 3 2 Tx 3 2 2 3 Rx Com 7 5 _________________ 5 7 Com 3 9 3 Comms Address Typically t...

Страница 31: ... customer requirements Remote input when specified may be switched on and off using the remote setpoint enable parameter in the controller level 2 if this was made available for a particular application In level 2 press page until REM SP Enable is displayed press up or down to select SP1 the normal controller setpoint or SP2 the remote input setpoint SPX will appear in the top left corner of the d...

Страница 32: ...the controller wear an anti static wrist strap or otherwise avoid any possibility of damage to the unit by static electricity Refer to the detailed instructions supplied with the replacement controller Ease apart the two lugs at the side grip the instrument and withdraw it from its sleeve push in the replacement 3 11 Controller Navigation Diagrams The following diagrams detail how to navigate to t...

Страница 33: ...1 No Program Running HD Home Display Controller identity when using more than one controller R O Read Only Black Progress Page Key White Return Scroll Key Visible Parameters depend on the Segment Type 33 3 0 3508 Controller ...

Страница 34: ... Operator Level 1 Program Running HD Home Display Controller identity when using more than one controller R O Read Only Black Progress Page Key White Return Scroll Key See previous diagram Operator Level 1 No Program Running 34 ...

Страница 35: ...y B Level 2 Locked before Pass Code entered L1 Level 1 Home Display Unlocked L2 Level 2 Home Display Black Progress Page Key See previous diagram Operator Level 1 No Program Running Hold Page Key for 3 seconds If configured Arrow Key 35 3 0 3508 Controller ...

Страница 36: ...the load In practice the cascade control system is configured to limit the element temperature to a band around the load temperature typically of 10 of the set point temperature The set point of the load loop shown at the top of the display can be adjusted by the operator The Element Loop shown at the bottom of the display should not be adjusted by the operator will automatically regulate the elem...

Страница 37: ...y A Home Display View B Load Loop View C Element Loop View The Element Loop should never be adjusted Note that the elements usually run at a higher temperature than the load 37 4 0 3508 Dual Loop Cascade ...

Страница 38: ...does not reach the desired temperature or is slow in the final stages FF Trim can be increased a maximum of 10 is suggested Feed Forward View When attempting to control at very low temperatures it can become a problem to achieve stable control because of excessive power being supplied during heating The available power can be limited using the power limit parameter OP Hi make a note of the origina...

Страница 39: ...Power Limit View 39 4 0 3508 Dual Loop Cascade ...

Страница 40: ...rameter to Also note that cooling at low temperatures takes longer per degree than it does at high temperatures 4 5 Caution If the Load Thermocouple is removable leave it in the furnace or oven chamber whenever possible Operating with the Cascade Control active and with the Load Thermocouple in an unheated position such as lying on the work bench may cause the furnace or oven to heat up to its max...

Страница 41: ... an audible alarm at the end of the timing period 5 2 2132 Controller Operation 5 2 1 Controls Most Carbolite Gero products are fitted with an instrument switch which cuts off power to the controller and other parts of the control circuit To operate the controller power must be supplied to the product and the instrument switch must be on If a time switch is included in the product circuit this mus...

Страница 42: ...d by the operator A single press of the scroll key in the Home list displays the temperature units further presses reveal the parameters in the current list indicated in the navigation diagram To return to the Home list at any time press page and scroll together or wait for 45 seconds The down and up keys are used to alter the setpoint or other parameter values 5 2 3 Basic Operation Normally no op...

Страница 43: ... It is only possible to limit the rate of heating by setting a ramp rate if the timer feature is not in use To enable direct setting of the ramp rate first ensure that the StAt parameter and dwEll parameter are both set to OFF see sections 5 3 1 and 5 3 2 Press scroll until SPrr setpoint ramp rate is displayed Use down or up to display and adjust the value The ramp rate sets the maximum rate of he...

Страница 44: ...e Timer This controller can be used as a process timer allowing timed heating or timed delay according to the options in the table There are 5 timer modes but 2 of them are affected by whether the setpoint ramp rate feature is being used making 7 entries in the table The table also shows the status of the timer light on the controller A visual impression of the different modes is given in fig 3 44...

Страница 45: ...iming period mode 3 with SPrr active Dwell from working setpoint and switch off The timer starts timing when the working setpoint is within 1 C of the setpoint At the end of the timing period control switches off i e goes into Manual to allow cooling and End flashes on the display On during the timing period Off from the end of the timing period mode 4 with SPrr off Time from cold and stay on The ...

Страница 46: ... StAt parameter changes to run Note that the tmr display shows 0 zero during the last minute of timing and also shows 0 when the time has expired The timer light indicates whether timing is still in progress Method 2 Scroll to dwEll and use or to set the timing duration The advantage of method 2 is that dwEll need only be set once if repeated use of the same time period is required Scroll to StAt ...

Страница 47: ... setpoint ramp rate 5 Modes 3 4 with setpoint ramp rate off 6 Reaching temperature and continuing temperature Mode 5 7 Continuing at temperature modes 2 4 or cooling down modes 1 3 5 3 4 Stopping the Timer To stop the timer at any time while it is operating change the StAt User Calibration parameter to OFF This is the same as reducing tmr to zero The controller then acts as though it has reached t...

Страница 48: ...ode 1 as on the first row of the timer table but also includes the use of ramp rate To create this program 1 Start with display at home use arrow keys to alter the setpoint to 500 2 Press scroll until sp rr shows use arrow key to set value to 10 if you do not want to limit the ramp rate ignore this step or set the value to OFF 3 Press scroll until tm op shows use arrow key to set value to opt 1 4 ...

Страница 49: ... If a product is to be used at temperatures much lower than its design maximum control stability can often be improved by reducing the power limit Remember to make a record of the original setting before altering the power limit Example It is desired to operate a 1200 C furnace at 300 C The normal control settings can be expected to cause excessive overshoot as the furnace reaches temperature If t...

Страница 50: ... the calibration of the controller or of the complete system remember to reset the controller to factory calibration values by setting the CAL P parameter to FACt To enter a user calibration scroll to each of the following parameters in turn and set the desired values Pnt L low temperature for which an offset is to be entered OFS L offset value for the low temperature Pnt H high temperature for wh...

Страница 51: ... 6 It is not feasible to cover all possible alarm features which may be included by customer special order within this manual 5 6 Temperature Controller Replacement Before handling the controller wear an anti static wrist strap or otherwise avoid any possibility of damage to the unit by static electricity Refer to the detailed instructions supplied with the replacement controller Ease apart the tw...

Страница 52: ...5 0 2132 Controller 5 7 Navigation Diagram 52 ...

Страница 53: ... if SPrr in use 4 Manual Auto mAn off Auto on 5 Setpoint ramp rate OFF or value 6 Timer mode 7 Time remaining 8 Dwell time for timer 9 Timer status run or OFF 10 Enter password 11 If User Calibration 12 User 2 Point Calibration 13 Power limit setting if present 14 For factory acess to lists and parameters not available to the operator 53 5 0 2132 Controller ...

Страница 54: ...strument switch which cuts off power to the controller and other parts of the control circuit To operate the controller power must be supplied to the product and the instrument switch must be on If a time switch is included in the product circuit this must be in the ON position When an over temperature condition occurs the controller cuts the power to a contactor which in turn cuts power to the he...

Страница 55: ... set at 15 C above the furnace or oven maximum working temperature Press scroll twice view the present temperature as measured by the over temperature controller Press it twice the first press shows the temperature units C 6 2 4 Over Temperature Alarm If an over temperature condition occurs the OP2 indicator flashes and an alarm message 2FSH also flashes alternating with the setpoint Power to the ...

Страница 56: ...erature condition and to stop sounding when the alarm is acknowledged as given in section 6 2 Note the alarm may sound during controller start up 6 4 Navigation Diagram HL Home List Page Key Black Progress OTSP Over Temperature Setpoint Scroll Key Dashed Through to other options AL Access List For factory access to list and parameters not available to the operator 56 ...

Страница 57: ...erature control see the controller instructions Over Temperature option only If the over temperature circuit has tripped an indicator on the over temperature controller flashes and the heating elements are isolated Find and correct the cause before resetting the over temperature controller according to the instructions supplied To switch off power to the heating elements use the heater switch To s...

Страница 58: ...k thermocouples B Retransmission of Setpoint C Independent control The models listed in this manual are designed to achieve an extended uniform temperature zone through use of three control zones rather than achieving different temperatures in each zone For A B the control zones are linked so that they all follow the centre zone controller in a master slave approach 58 ...

Страница 59: ... returns to the measured temperature when no key is pressed for a short period of time Sometimes a furnace using this type of control does not cool down because the end zones lose heat first and therefore the end zone controllers try to compensate for this by switching on the end zone elements preventing the furnace from cooling B Retransmission of Setpoint Three independent thermocouples are conn...

Страница 60: ...e of heat transfer between the zones The models listed in this manual are designed to achieve an extended uniform temperature zone by the use of three control zones rather than achieving different temperatures in each zone 7 4 General Operating Advice Heating element life is shortened by overheating Do not leave the product at high temperature when it is not required The maximum temperature is sho...

Страница 61: ...eneral rule for maximum heating or cooling rate is 400 internal diameter in mm to give C min for 75 mm i d tubes this comes to 5 C per minute The controller can be set to limit both the heating and cooling rate 7 7 Pressure Work tubes are not able to accept high internal pressure When gas seals or similar fittings are in use the gas pressure should be restricted to a maximum of 0 2 bar 3 psi A pre...

Страница 62: ...y be adjusted to a different voltage within the range the power limit should be reset to match OP Hi see 12 0 Refer to section 3 0 for power adjustment instructions 7 9 Running at Low Temperatures The power limit may be adjusted to a low level in order to achieve better control when operating the product at a low temperature Before changing the power limit record the default settings for possible ...

Страница 63: ...tted Electrical measurement Safety Switch Function split models only Set a safe temperature above ambient and open the furnace to see if the heater light goes out Safety Switch Function split models only Electrical measurement Electrical Safety external Visual check of external cables and plugs Electrical Safety internal Physically check all connections and cleaning of the power plate area Functio...

Страница 64: ...ted Check all seals and O rings and clamps Performance Element Circuit Electrical measurement Power Consumption Measure the current drawn on each phase circuit Cooling Fans if fitted Check whether the cooling fans are work ing 64 ...

Страница 65: ...bove ambient The heater lights should illuminate l Open the door and check the heater lights They should no longer be illuminated If the heater lights remain illuminated when the door is open discontinue use and contact Carbolite Gero Service Annual check The following checks should be carried out by a qualified electrician as specified in the Maintenance Schedule section of this manual l Remove t...

Страница 66: ...t to be diagnosed and the necessary parts to be despatched In all correspondence please quote the serial number and model type given on the rating label of the product The serial number and model type are also given on the back of this manual when supplied with the product Carbolite Gero Service and Carbolite Gero contact information can be found on the back page of this manual 8 5 Recommended Spa...

Страница 67: ...ered during maintenance or repair Whilst there is no evidence of any long term health hazards it is strongly recommended that safety precautions are taken whenever the materials are handled Exposure to fibre dust may cause respiratory disease When handling the material always use approved respiratory protection equipment RPE eg FFP3 eye protection gloves and long sleeved clothing Avoid breaking up...

Страница 68: ...e type N pink negative white Disconnect the thermocouple from its terminal block Carefully withdraw the thermocouple from the product and remove any broken bits of thermocouple Bend the new thermocouple carefully to match the shape of the original working from the terminal end Should the length differ from that of the original this is usually not important provided that the thermocouple tip is wit...

Страница 69: ...eed the tails through and fit the element into place Refit the keep plates on each side Refit the tail termination plates ensuring that the element tails do not touch any metal parts Refit the thermocouple s Connect all the wiring according to the plan previously made and complete the reassembly of the product Check that the product is controlling properly to rule out the possibility that the elem...

Страница 70: ...s a low temperature The door switch es if fitted may be faulty or need adjustment The contactor relay if fitted may be faulty The heater switch if fitted may be faulty or need adjustment The SSR could be failing to switch on due to internal failure faulty logic wiring from the controller or faulty controller There are no lights glowing on the controller Check the supply fuses and any fuses in the ...

Страница 71: ...r shows a low temperature The thermocouple may be faulty or may have been removed out of the heating chamber The thermocouple may be connected the wrong way around The controller may be faulty 2 Product heats up when the instrument switch is OFF The SSR has failed ON Check for an accidental wiring fault that could have overloaded the SSR 71 10 0 Fault Analysis ...

Страница 72: ...afety Switch A A 2 pole Heater Switch is fitted directly in the element circuit in models up to 16 A rating Safety Switch B A door switch is fitted into the contactor coil circuit Above 16 A a 1 pole Heater Switch is fitted into the same circuit in series 72 ...

Страница 73: ...11 2 WC 13 71 Connections below show single phase with indirect safety switches and over temperature control 73 11 0 Wiring Diagrams ...

Страница 74: ...d of the four shown connected to the three controllers the words master and slave may be replaced by centre and end 11 5 Control by Broadcast Comms control method B When this is ordered there are three independent thermocouples connected to the three controllers the controllers are linked together not shown and remain master and slave The communication between the controllers of the Eurotherm 3000...

Страница 75: ...11 7 Higher Voltages For 254 V or above 1 phase or 440 254 V or above 3 phase an isolating transformer is included in the control circuit after the F2 fuses 75 11 0 Wiring Diagrams ...

Страница 76: ...ble fitted See rating label for current See table below for fuse rating Model Phases Volts Supply Fuse Rating HZS 12 900 1 phase 200 240 25 A HZS 12 900 3 phase N 380 415 10 A HZS 12 900 3 phase Delta 200 240 16 A HZS 12 900 E 1 phase 200 240 25 A HZS 12 900 E 3 phase N 380 415 10 A HZS 12 900 E 3 phase Delta 200 240 16 A 12 2 Power Settings The power limit settings parameter OP Hi for this model ...

Страница 77: ...justments Date Power Comments Note If a new set of elements are fitted then return the power settings to the original value Please refer to the rating label for product specific information 77 12 0 Fuses and Power Settings ...

Страница 78: ...one Split Tube furnaces heated by resistance wire moulded in refractory fibre HZS 12 900 1200 4 5 110 1050 900 65 Note Weights are approximate for horizontal models and do not include fittings or vertical stands 13 1 Environment The models listed in this manual contains electrical parts and should be stored and used in indoor conditions as follows Temperature 5 C 40 C Relative humidity Maximum 80 ...

Страница 79: ...Notes Service Record Engineer Name Date Record of Work ...

Страница 80: ... us at the address below or ask your nearest stockist For preventive maintenance repair and calibration of all furnace and oven products please contact Carbolite Gero Service Telephone 44 0 1433 624242 Fax 44 0 1433 624243 Email ServiceUK carbolite gero com Carbolite Gero Ltd Parsons Lane Hope Hope Valley S33 6RB England Telephone 44 0 1433 620011 Fax 44 0 1433 621198 Email Info carbolite gero com...

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