30934 V2
R Series
Page 17
Operating Manual
www.grantinstruments.com
Replacement fuses must be 1.25” x 0.25” anti surge ceramic type with the rating defined
in the following table:
R unit
Fuse rating
R1, R2 & R3
15AT
R4
5AT
R5
10AT
R1L, R2L & R3L
10AF
R4
10AT
9.3
Replacing the mains cord
Any replacement mains cords used for the control unit or refrigeration unit must meet the
same specification as the one originally supplied to maintain the safety of the unit.
All 230V mains cables (including the interconnect mains cable) must have the following
markings; <HAR>, HO5VV-F 3Gx1mm2 70°C and be rated to carry 10A. The mains plug
and IEC connector must carry approvals from a European certification body (e.g. BSI,
VDE or equivalent).
The 120V refrigeration units have fixed mains cords which should not be replaced.
9.4
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 500V DC. Routine flash tests are not
recommended for any electrical equipment, because repeated high voltage tests degrade
insulation materials.
9.5
Service
If service is required, switch off the unit and contact Grant Instruments or your local
representative for repairs.
Please note, all returned units must be accompanied by a Return Materials Authorisation
(RMA) number, obtainable by contacting the Grant service department (details below).
Service Department
Grant Instruments (Cambridge) Ltd
Shepreth
Cambridgeshire
SG8 6GB
UK
Tel: +44 (0) 1763 260 811
Fax: +44 (0) 1763 262 410
E-mail: [email protected]