C1GR, C1GR US, C2GR, C2GR US, CC26R, CC26R US
Operating manual Part No. 34960
Page 8
www.grantinstruments.com
4.
Maintenance and Service
4.1
General
No routine maintenance is required except for cleaning the condenser fins and enclosure (see
section 3.2). There are no user serviceable parts inside the unit. If the unit is visibly damaged or
does not operate correctly, please contact our service department in the UK (see section 5), or
your local distributor (outside the UK) to arrange repair.
4.2
Cleaning
4.2.1
General
The enclosure can be cleaned with a lightly damped soft cloth after disconnection from the supply.
Do not use strong and/or aggressive solvents. The immersed coil assembly can be cleaned with
soapy water.
Before using any other decontamination or cleaning method, except that recommended above,
check with our Service Department, or in other countries with our distributor, that the proposed
method will not damage or impair the safety of the equipment.
4.2.2
Condenser cleaning
Cooling power will be reduced if the refrigeration condenser fins become blocked with dust and/or
foreign material pulled in by the cooling fan. The equipment should be internally cleaned by a
suitable qualified electrician and/or Grant appointed representative on a regular basis to prevent
the build-up of foreign material within the equipment.
4.3
Routine safety tests
If routine tests are to be made, we recommend a test of the integrity of the protective earth
conductor and an insulation test at 500 V DC. Routine flash tests are not recommended for any
electrical equipment, because repeated high voltage tests degrade insulation materials.
4.4
Replacement of fuses
Disconnect the mains plug from the supply. Remove the IEC power connector from the rear of the
equipment. Using a suitable blunt tool, release the fuse drawer retaining clip and slide out the fuse
drawer. Check and replace with the correct fuse type, as previously fitted, or if necessary as
detailed below:
Size: 1.25 x 0.25-inch (31.75x6.35mm), ceramic (high breaking capacity), qu
ick acting type ‘F’
Model C1GR:
220-240V:
5AF
115-120V:
10AF
Model C2GR:
220-240V:
10AF
115-120V:
10AF
Model CC26R:
220-240V:
10AF
115-120V:
10AF
After inserting the replacement fuses into the fuse holders, slide the drawer back into the aperture
provided in the AC-inlet and replace the IEC power connector.
4.5
Disposal
This unit contains refrigerant gas which must NOT be discharged into the atmosphere. At the end
of the unit’s working life, either have the gas removed safely by using refrigerant recovery
equipment or return the unit to Grant Instruments for disposal.
