WarmAir
Model 135 Manual PREVENTATIVE MAINTENANCE
Page 23 of 43
Functional & Safety Inspection
A full examination of the unit must be performed regularly to assure proper functionality,
performance, safety and reliability. Major functionality and safety checks should be done every 6
months. Refer to the Inspection form for details.
Do not hipot or dielectric test the unit. Only apply the
rated voltage to the unit. Subjecting the unit to
voltages other than rated voltage may cause damage to
the unit. These tests are done only at CSZ
All testing must be done with proper input power and in ambient conditions of 15-30°C (59-86°F).
The following tools are required:
Digital air thermometer (400 Series thermistor) with a range of 15.6-70.0°C (60-160°F) and
accuracy of ±0.6°C (±1°F).
Phillips screwdriver
Current Leakage Tester
Ground Resistance Meter
Stopwatch
Refer to Appendix 1 on page 43 for Test setup and parameters.
Note: All temperature settings represent temperatures at the end of the hose outlet, not blanket
surface temperature. The maximum contact surface temperature of the blanket during normal
operation is 48°C. The maximum contact surface temperature of the blanket during over-temperature
limit conditions is 50°C.
Inspection Form For Routine Maintenance
An inspection form is provided on the following two pages to guide and document the routine
maintenance.
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