Maintenance; Cleaning The Cabinet Interior; Cleaning The Unit (Chromatography Refrigerators); Cleaning The Condenser - Thermo Scientific TSG Series Installation And Operation Manual

Maintenance

Cleaning the Cabinet
Interior
WARNING: Disconnect equipment from main
power before attempting any maintenance to
equipment or its controls unless stated
otherwise.
To clean the cabinet interior, remove the shelves, use a
solution of water and a mild detergent for cleaning. Rinse the
interior storage components and wipe them dry with a soft
cloth.
Cleaning the Unit
(Chromatography
Refrigerators)
Use a solution of water and a mild detergent for cleaning.
Lightly spray the interior storage components and wipe them
dry with a soft cloth or spray the cloth first and then wipe
interior surfaces.
Do not spray or pour directly into holes and gaps in the
chromatography safety circuit assembly for cleaning. Use a
wet wipe to clean around sensor box and outlet.
If the sensor led turns red after cleaning, manually reset the
safety circuit assembly using the manual reset switch at the
back of the unit.

Cleaning the Condenser

CAUTION: Condensers should be cleaned at
least every six months; more often if the
laboratory area is dusty. In heavy traffic areas,
condensers load with dirt more quickly. Failure to
keep the condenser clean can result in
equipment warm-up or erratic temperatures.
CAUTION: Never clean around the condensers
with your fingers. Some surfaces are sharp.
The condenser is located in the bottom front of the unit.
To clean the condenser, complete the following steps:
General Purpose and Chromatography Refrigerators
1. Disconnect the power.
2. Vacuum the condenser and clean up any loose dust.
3. Reconnect power.

Automatic Defrost

The defrosting process on all the models is primarily
accomplished by air circulated during off-cycle. This heat free
process ensures that the temperature is not affected by the
defrost cycle. Defrost cycle works on adaptive defrost
method which is both temperature and time controlled.
When the evaporator sensor reaches below 0°C, the defrost
cycle will be initiated. Initially the defrost cycle continues for a
minimum duration of 5 minutes and after that the defrost
cycle will be terminated once the evaporator sensor
temperature reaches 4°C. In case the evaporator sensor
doesn't reach the temperature of 4°C within 30 minutes from
the start of defrost cycle, the defrost cycle will be terminated.

Gasket Maintenance

Periodically check the gaskets around the door for punctures
or tears. Leaks are indicated by condensation or frost which
form at the point of gasket failure. Make sure that the cabinet
is level.
Keep the door gaskets clean and frost free by wiping gently
with a soft cloth.
To check the door seal, complete the following steps:
1. Open the door
2. Insert a strip of paper (a couple of inches wide) between
the door gasket and the cabinet flange and close the
door.
3. Slowly pull the paper strip from the outside. You should
feel some resistance.
4. Repeat this test at 4-inch intervals around the door. If the
door does no seal properly, replace the gasket.
Alarm Battery
Maintenance
Unit comes with (4) AA Alkaline 1.5 V batteries. The back-up
time for the alarm battery system is 60 hours. Battery must be
Maintenance | 21