Carbolite EZS Series - Manual (Page 19)

E range
MF65-1.01 19 19
4 MAINTENANCE
4.1 General Maintenance
No routine maintenance is required. The outer surfaces may be cleaned with a damp cloth. Do not
allow water to enter the interior of the control box, work tube or furnace insulation/element
assembly (main body of the furnace where the work tube is located). Do not clean with organic
solvents.
4.2 Calibration
After prolonged use the controller and/or thermocouple may require recalibration. This is
important for processes that require accurate temperature readings or that 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.
These items can be supplied by Carbolite.
Depending on the controller, the controller manual may contain calibration instructions.
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 our
customers’ premises throughout the world. We also sell spares by mail order. A telephone call or
email often enables a fault to be diagnosed and the necessary spare part despatched. Please see
back page of this manual for Carbolite Engineering Services contact details.
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 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.
Models EHA, EVA: Each kit comprises one thermocouple and one solid state relay.
Models EHC, EVC: Each kit comprises two thermocouples of different length, and one solid state
relay.
When ordering spares please quote the model details i.e. model type and serial number as stated
on the rating label.
5 REPAIRS & REPLACEMENTS
5.1 Safety Warning – Disconnection from Supply
Always ensure that the furnace is disconnected from the supply before repair work is carried out.
5.2 Safety Warning - Refractory Fibrous Insulation
Insulation made from High Temperature Insulation Wool
Refractory Ceramic Fibre, (better described as Alumino Silicate Wool) (ASW)
This product contains alumino silicate wool products in its thermal insulation. These materials
may be in the form of blanket or felt, formed board or shapes, mineral wool slab or loose fill wool.
Whilst there is no evidence of any long term health hazards, we strongly recommend that safety
precautions are taken whenever the materials are handled.
Exposure to fibrous dust may cause respiratory disease.
When handling the material always use an approved respiratory protection equipment
(RPE-i.e. FFP3), eye protection, gloves and long sleeved clothing.
Avoid breaking up waste material. Dispose of waste in sealed containers.
After handling rinse exposed skin with water before washing gently with soap (not
detergent). Wash work clothing separately.