TestEquity 123HS, Operation And Service Manual

Page: 36 / 53

Chapter 7 – Maintenance
Page 7-6 TestEquity 123HS Temperature/Humidity Chamber
How to Inspect the Electrical Compartment
1. Disconnect the chamber from the power source.
2. Remove the top cover.
3. Check for loose components, loose wires, burned insulation near terminals, and burned or
excessively pitted contacts on contactors.
How to Clean the Condenser
1. Disconnect the chamber from the power source.
2. Remove the lower front panel.
3. Clean the condenser fins with a vacuum cleaner.
NOTE:
You may need to clean the condenser more frequently if the chamber is in a dusty
environment. You may be able to clean the condenser less frequently if the chamber is in a very
clean environment.
How to Drain the W100 Water Recirculation System Reservoir
1. This procedure drains the water in the recirculation system only, not the vapor generator.
2. If the chamber is running a humidity test, turn it off. Otherwise, this task can be done while
the chamber is operational.
3. Place a basin capable of containing all the water in
the reservoir under the drain valve. Or, disconnect
the Water Recirculation System and move it to an
area where the water can be drained into a floor
drain or outside.
4. Open the drain valve to empty the tank.
5. Refill the tank with tap water or filtered drinking
water (NOT spring water or distilled water).
6. Reconnect the Water Recirculation System if it
was disconnected.
NOTE: You may need to drain and replace the water
more frequently if the water appears dirty before the
recommended maintenance interval of 3 months.
Figure 7-1 – Reservoir Drain Valve
Reservoir drain. Drain water
when it appears dirty.