SUB, JB & SBB Aqua Plus
29825 V4
Operating Manual
Page 18
www.grantinstruments.com
EN
9.2.2 Replacing fuses on SBB Aqua Plus & SUB Aqua 34 Plus
Disconnect the unit from the power supply
1. Remove the mains lead from the socket at the back of the bath.
2. Carefully use a screwdriver to unscrew the fuse cap from the holder. Check the
fuse(s) and replace if necessary using the specified fuse type and rating. CAUTION:
the fuse should be placed in the cap, do not attempt to put the fuse directly in the
holder.
3. Carefully replace the fuse cap in the holder and replace the mains lead.
9.2.3 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.
9.3
Service
If service is required, switch off the unit and contact Grant Instruments or your local
representative for repairs.
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:
10.0 Optional accessories
A full listing of product accessories and options is available in the Grant Scientific
Reference Catalogue (a copy of which is available upon request) and on the Grant
website at www.grantinstruments.com.
11.0 Troubleshooting
No lights or display -
check power source, mains switch and fuses.
Water is not reaching temperature -
check that the set temperature and the sample
protection thermostat are set correctly.
Display shows ‘
’ -
check that the sample protection thermostat is set correctly.
Display temperature is different from actual temperature -
use single (
) or twin
point calibration (
) to correct this.
There is no last digit on the display -
allow the bath to stabilise.
Temperature of water fluctuates -
check that the sample protection thermostat is set
correctly.
