MTF 9/15
M
AINTENANCE
5.1 General Maintenance
The furnace does not require any routine preventative maintenance. The outer surfaces may be
cleaned with a damp cloth. Do not allow water to enter the interior of the furnace. Do not clean
with organic solvents.
5.2
Calibration
After prolonged use the controller and/or thermocouple could require recalibration. This would be
important for processes which require accurate temperature readings or which use the furnace
close to its maximum temperature. A quick check using an independent thermocouple and
temperature indicator should be made from time to time to determine whether full calibration is
required. Carbolite can supply these items.
See also the instructions for calibrating the controller, section 4.14.
5.3
After Sales Service
Carbolite’s service division (Thermal Engineering Services) has a team of Service Engineers
capable of repair, calibration and preventive maintenance of furnace and oven products at our
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 furnace 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 furnace. The serial number and
model type are also given on the front of this booklet when supplied with a furnace.
To contact Thermal Engineering Services or Carbolite see the back page of this manual.
5.4 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 one wound tube element, one thermocouple, and a fuse.
When ordering spares please quote the model details as requested above.
5.5
Power Adjustment
The furnace control system incorporates electronic power limiting, which in this model is used as
described in section 9.2. The power limit parameter
OP.Hi
may be accessible to the operator, but
should not generally be altered.
Do not adjust the power limit in a 220-240V model to 100% - the element will burn out.
6.0
10
MF09
