Apex Series Ovens
MF42 1.10 7
4.0 MAINTENANCE
4.1 General Maintenance
No routine maintenance is required other than the occasional replacement of consumable items.
The oven outer surface may be cleaned with a damp cloth. Do not allow water to enter the interior
of the case. Do not clean with organic solvents.
The fan motor is sealed for life; no lubrication is required.
Lightweight ceramic fibre insulation can easily be marked by accidental contact. Some fine cracks
may be visible on the surface of the insulation, or may develop in the surface of the chamber due
to the progressive shrinkage of the insulation materials. Cracks are not usually detrimental to the
functioning or the safety of the furnace.
4.2 Calibration
After prolonged use the controller and/or the temperature sensor could require recalibration. This
would be important for processes that require accurate temperature readings. A quick check using
an independent sensor and temperature indicator should be made from time to time to determine
whether full calibration is required.
For a quick check of the temperature shown by the control sensor and oven controller, a portable
temperature indicator and probe sensor may be used. Carbolite can supply these items.
If the process requires accurate temperature display it is possible to calibrate the controller by
entering a single temperature offset value as follows:
Hold the “P” key down for a few seconds while switching on the oven with the instrument
switch to enter config mode.
Use the up and down arrow keys to scroll through the group list until ‘InP’ is displayed, press
“P” to accept.
Scroll through the parameter list until ‘OFst’ is displayed, press “P” to accept.
Use the up and down arrow keys to adjust the value, press “P” to accept.
Press both arrow keys together to return to the group list.
Press both arrow keys together again to exit the config mode.
4.3 After Sales Service
Carbolite’s service division (Carbolite Engineering Services) has a team of Service Engineers
capable of repair, calibration and preventive maintenance of furnace and oven products at
customers’ premises throughout the world. We also sell spares by mail order. A telephone call or
fax often enables a fault to be diagnosed and the necessary spare part despatched.
Each oven has its own record card at Carbolite. In all correspondence please quote the serial
number, model type and voltage given on the rating label of the oven. The serial number and
model type are also given on the front of this booklet when supplied with a oven.
To contact Carbolite Engineering Services or Carbolite see the back page of this manual.
4.4 Recommended Spares Kits
Carbolite can supply individual spares, or a kit of the items most likely to be required. Ordering a
kit in advance can save time in the event of a breakdown. Each kit comprises a control sensor, a
solid state relay, an instrument switch, an element or set of elements, a door seal, and a fan kit (fan
and motor assembly). Individual spares are also available.
When ordering spares please quote the model details as requested above.
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