Thermo Scientific Thermo Scientific 3906, Operating Manual

Page: 73 / 104

Thermo Scientific Model 3900 Series | 10-3
Maintenance |
Chapter 10
See
Manual
Section
Action 3 Months Yearly 2 Years 5 Years 6 Years
-- Inspect door latch, hinges and
door gasket seal.

8 Check air exchange ventilator
caps for adjustment; open or
close as required.

9 Perform a complete
decontamination procedure.
Wipe down interior, shelves,
side panels with disinfectant.
Rinse everything well with
sterile water. Between Experi-
ments. More frequent
deconta- mination
may be required,
depending on use
and environmental
conditions.
13 Verify and document all cali-
brations at minimum once a
year.

10 Inspect and clean the humidity
generator, at minimum once a
year.*
5 Clean drip pan and drain lines.

9 Clean refrigeration system con-
denser.*

8 Verify defrost cycle for below
10°C operation.

-- Change filters (under normal
conditions).

-- Replace filter elements on the
dryer, if applicable. †

-- Safety check of the electrical
system according to national
legislation.

-- Rebuild solenoid valves on the
dryer, if applicable. †

-- Replace/repack the desiccant
towers on the dryer, if applicable.

-- Replace the check valve and
o-rings on the dryer, if applicable.

-- Check in regular intervals the
light modules for defect lamps.

Depending upon the
quality of water used
in the humidification
system, it may be
necessary to clean
more frequently.