Aintenance, Asks to be, Erformed – HP 11744195 User Manual

Page 20: Very, Hree, Onths, Erformed on an, Nnual, Asis

Chart Environmental Chambers

System Maintenance

5. The seals and gaskets on the doors floors and ports should be inspected for adequate

sealing. Remove any foreign materials that may be embedded in the gasket. Worn or
damaged gasket should be replaced.

6. Check all the fasteners on the system and tighten if necessary.

❏

Maintenance Tasks to be Performed Every Three Months:

1. Measure and record the resistance of the heater. Changes in these measurements over

time can help predict any future heater elements failing.

❏

Maintenance Tasks to be Performed on an Annual Basis:

1. Calibrate the Watlow controller.
2. Inspect seats of solenoid valve. Chart recommends replacing the valve as a

preventative maintenance measure against thermal run-away conditions due to
solenoid valve failure.