OTF 5000/HS/LS-001/2/3/4 Iss 4 June 2012
33
4.6.2 REST OF WORLD
Refrigeration problems are likely to be rare and will normally be dealt with by a local
refrigeration specialist. For electrical and mechanical problems contact your local distributor of
Bright products providing the following information:
Model (see ID plate on rear panel)
Serial Number (see ID plate on rear panel)
Date of installation
Nature of fault
To assist in refrigeration and electrical repairs ensure that the engineer refers to the mini-
manual which is located in the refrigeration unit compartment.
4.7 SIMPLE SERVICING/REPAIR PROCEDURES
User servicing is restricted to changing of fuses and fluorescent light tubes. All other servicing
must be carried out by a qualified engineer. Any replacement parts must be ordered from Bright
Instrument Co Ltd - no liability can be accepted if non-Bright supplied parts are installed.
4.7.1 CHANGING FUSES
On the rear panel of the cabinet are a number of fuse holders. Determine which fuse is blown
and replace it with one of exactly the same type and rating.
1. Determine which function is not working.
2. Disconnect power supply.
3. Locate appropriate fuse (function is specified under the fuse holder).
4. Remove fuse and check to see if it has blown.
5. Replace with correct rating fuse (ratings are specified under each fuse holder).
6. Reconnect the power supply and ensure instrument is working correctly.
If there are any further problems contact your local distributor or Bright Instrument Co Ltd direct.
4.7.2 CHANGING FLUORESCENT TUBE
1. Disconnect power supply.
2. Remove plastic trim from over light area, it is held by five Pozidrive screws. This will also
release the light support bracket.
3. Lower light unit from right hand side.
4. Ease the Perspex light cover from the left hand rubber housing to allow access to light
tube.
5. Replace light tube and reverse stages 4 to 1.
Please note that the wires must be pushed back with care!
4.8 DECONTAMINATION
If decontamination is required carry out the standard procedures as practised in your laboratory.
It is the responsibility of the customer to use a decontamination procedure appropriate to his/her
work. The following decontamination method is as recommended in the ‘Code of Practise for
the Prevention of Infection in Clinical Laboratories and Post-mortem Rooms’, ISBN 0 11 320464
7.
1 Bring the cryostat to room temperature.
2 Place 50-100ml of formalin BP in a flat dish inside the chamber. Close the window.
3 Leave for at least 24 hours, preferably 48 hours.
4 Open the window and place a beaker containing 10ml of ammonia SG.880 in the chamber.
Close the window.
5 Leave for one hour. The cryostat is now decontaminated.
For further information regarding alternative decontamination procedures please refer to ‘Safe
Working and the Prevention of Infection in Clinical Laboratories’, ISBN 0 11 885446 1.
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