Chapter 7 – Maintenance
Page 7-2
TestEquity 3007C Temperature Chamber
Maintenance Procedures
How to clean the chamber interior and exterior
•
Wipe or vacuum out all debris.
•
Clean surfaces with a damp cloth, mild detergent, or stainless-steel cleaner. Avoid cleaners
that are abrasive or leave a residue. Do NOT use steel wool.
•
If you clean the interior with something other than water, you may want to operate the
chamber at high temperature (approxi125
°
C) after cleaning. This helps to “bake out”
any residue. Remove the port plugs to permit the residual vapors to escape.
•
Clean the silicone door gaskets with a damp cloth or mild detergent.
•
Clean the exterior painted surfaces with a damp cloth or mild detergent. If you are using a
detergent, test a small inconspicuous area to make sure it does not damage the finish.
How to listen for abnormal noise or vibration
You should become familiar with normal operating noises. Being able to recognize changes from
normal operating noises can be a valuable way to identify problems and prevent further damage.
Examples of noises to be aware of include:
•
Circulator motor and fan noises (with compressors off).
•
Compressor start-up and running noises, sequential starting of compressors.
•
Condenser fan noises.
•
Relay and valve cycling noises when cool light is cycling.
How to inspect the door seal
The door has two silicone gaskets to minimize thermal losses and moisture migration.
•
Inspect the gaskets for dirt and tears.
•
Repair minor tears with a high quality RTV silicone such as GE RTV167.
•
Check the integrity of the door seal by closing the door on a sheet of paper. With the door
closed, slowly pull the paper. You should feel the resistance getting lighter as the paper goes
past the inner gasket. Repeat this all around the door at several places.
•
If the seal is not tight, adjust the door latch. The stainless-steel catch (on the bracket that is
mounted to the chamber) has slotted holes to permit adjustment.
•
If the seal is still loose on the hinge side, adjust the door hinge. The hinges have slotted holes
(on the door side) to permit adjustment.
