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Check that the product is controlling properly, ensuring that the original fault was with
the temperature sensor.

19

6.0   Repairs and Replacements

Summary of Contents for CARBOLITE GERO Apex Series

Page 1: ...Installation Operation and Maintenance Instructions 250 C Laboratory Fan Ovens Apex Range 30 Litres R38 Controller AX 30 R38 Controller MEN AX030 001_R38 01 08 2019 ...

Page 2: ... Electrical Connections 8 3 0 R38 Controller 10 3 1 PID control 10 3 2 Controller Operation 10 3 3 R38 Over Temperature Controller 10 3 4 Process Timer if fitted 11 3 5 Calibration 11 3 6 Over Temperature Control if fitted 12 3 7 Controller Replacement 12 3 8 Temperature Controller Replacement 12 4 0 Operation 13 4 1 Operating Cycle 13 4 2 The Oven Door and Chamber 13 4 3 Loading and Unloading the...

Page 3: ...t 18 6 5 Solid state Relay Replacement 20 6 6 Fuse Replacement 20 6 7 Element Replacement 20 7 0 Fault Analysis 21 A Oven Does Not Heat Up 21 B Oven Overheats 21 C Process Timer 22 8 0 Wiring Diagrams 23 8 1 WV 11 00 23 8 2 WV 11 01 24 9 0 Fuses and Power Settings 25 9 1 Fuses 25 9 2 Power Settings 25 10 0 Specifications 26 10 1 Environment 26 3 ...

Page 4: ...re control circuit is energised 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 may be hot DANGER Read any warning printed next to this symbol Caution Double Pole Neutral Fusing 4 ...

Page 5: ...g materials Locate the shelves runners and hangers as required 2 2 Siting and Setting Up Place the product on a level surface in a well ventilated area Site away from other sources 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...

Page 6: ...ply 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 If the over temperature option is not fitted ensure that the unit can be directly observed 6 ...

Page 7: ...face upon which the shelf can securely rest as shown in figures 3 and 4 3 Repeat this process on both sides of the oven chamber 4 Slide the shelves onto the runners so that the spur is positioned on the underside of the runner towards the back of the chamber see figure 5 This will prevent the shelf from tilting forwards when it is partially withdrawn Figure 1 Runner Figure 2 Runner inserted into s...

Page 8: ...unner into position Figure 4 Runner in position Figure 5 Shelf resting on runners with spur at rear of chamber highlighted in green Figure 6 Shelves fitted 2 3 Electrical Connections Connection by a qualified electrician is recommended 8 ...

Page 9: ...ired 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 reach of the operator and should be easy to rem...

Page 10: ...ture Controller When an R38 Controller is fitted to be used as an over temperature controller to configure the setpoint l Press and hold the P key until the display flashes SP l Press the down arrow key until the display shows AL l Press the P key to enable the setpoint option l Use the up and down arrow keys to select the required setpoint The display will flash between AL and the setpoint value ...

Page 11: ...progress and the display counts down at the end of each minute At the end of timing the OUT light comes on continuously and power to the temperature controller is cut off To reset the timer after timing has finished Press the U key once The timer is now idle it is not stopping the oven from heating nor is it timing Power is only supplied to the temperature controller when the timer is reset or is ...

Page 12: ...hole lines up with the reset button and press it using a small diameter rod 3 8 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 Disconnect the product from the electrical supply and remove the co...

Page 13: ...at up according to the controller setpoint or program unless a time switch is fitted and switched off To turn the product off set the instrument switch to its off position The controller display will go blank If the product is to be left unattended isolate it from the electrical supply 4 2 The Oven Door and Chamber It is recommended that the instrument switch is turned off if the oven door is to b...

Page 14: ...Temperature Control The temperature is controlled by an easy to operate digital unit The oven temperature range is from 40 C to 250 C though the minimum temperature may be higher if the ambient temperature is above 30 C A matching digital timer is available to order or may be retro fitted A second option is an over temperature control device There is also the option of a locking handle Temperature...

Page 15: ...he displayed temperature and check for an over temperature alarm as detailed in this manual Over Temperature Safety Circuit if fitted Electrical measurement Door Seal Visual inspection check for splits or fray ing Door Seal Replacement Air Vent Check and clean if necessary Electrical Safety external Visual check of external cables and plugs Electrical Safety internal Physically check all connectio...

Page 16: ...ing Circulating Fan if fitted Visual check to see if it is running Circulating Fan if fitted Check bearings and replace if necessary Element Circuit Electrical measurement Power Consumption Measure the current drawn on each phase circuit Shelves Visual check for fit and damage 16 ...

Page 17: ...espatched 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 5 4 Recommended Spare Parts and Spare Parts Kit Carbolite Gero can s...

Page 18: ...ight off the main case Disconnect the earth ground wire When reassembling take time and care in locating the tabs on the right of the front control panel into the matching slots in the side cover Remember to reconnect the earth wire Internal Element Cover Open the door Loosen the screw holding the internal side cover Pull the cover forward a few millimetres and lift it off to the left 6 3 Temperat...

Page 19: ...Check that the product is controlling properly ensuring that the original fault was with the temperature sensor 19 6 0 Repairs and Replacements ...

Page 20: ...rician to check the internal circuits Replace any failed fuses with the correct type For safety reasons do not fit larger capacity fuses without first consulting Carbolite Gero The fuses are located at the cable entry point Remove the back panel or control box back panel to gain access to the fuses 6 7 Element Replacement Disconnect the product from the supply and remove the side cover and interna...

Page 21: ... from the controller or faulty controller There are no lights glowing on the controller The controller may be faulty or not receiving a supply due to a faulty switch or a wiring fault B Oven Overheats 1 Oven only heats up when the instrument switch is ON The controller shows a very high temperature The controller is faulty The controller shows a low temperature The temperature sensor may not be po...

Page 22: ... Process timer has not been reset Resetting the timer has no effect Process timer is faulty relay stuck open 2 Oven continues to heat at end of process time Process timer OUT light is continuously on Process timer is faulty relay stuck closed OUT light flashing or off not a process timer fault 22 ...

Page 23: ...s FIL Filter SW Instrument Switch C Temperature Controller TC Thermocouple SSR Solid State Relay EL Element s If Fitted L Live N Neutral PE GR Y Earth Green Yellow Connections below show single phase with instrument switch es 23 8 0 Wiring Diagrams ...

Page 24: ...2 Fuses FIL Filter SW Instrument Switch R1 Relay Coil R1 1 R1 2 Relay Contactor C Temperature Controller OT Over Temperature Controller TC Thermocouple SSR Solid State Relay EL Element s If Fitted L Live N Neutral PE GR Y Earth Green Yellow 24 ...

Page 25: ... if cable fitted See rating label for current See table below for fuse rating Model Volts Supply Fuse Rating Control Fuse AX 30 110 120 V 10 A 2 A AX 30 220 240 V 6 A 2 A 9 2 Power Settings The power limit settings parameter OP Hi for this model are voltage dependant The figures represent the maximum percentage of time that controlled power is supplied to the elements Do not attempt to improve per...

Page 26: ...emp C Max Power kW Chamber Size mm Approx Capacity l Overall Size mm Net Weight kg H W D H W D AX30 250 1 0 295 300 320 28 440 590 465 24 10 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 26 ...

Page 27: ...Notes Service Record Engineer Name Date Record of Work ...

Page 28: ... 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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