Preventative Maintenance And Repair - Chromalox CXH-A/B-03S Installation, Operation And Maintenance Instructions

7. Preventative Maintenance and Repair

General
1. Review all guidelines as well as safety and warning in-
formation before performing maintenance and repairs.
2. Maintenance and repairs should be performed by quali-
fied personnel only.
3. Improper maintenance or repair can result in injury and
destruction of property and may result in warranty be-
coming null and void.
Preventative Maintenance Recommendations
Using compressed air, clean off motor, fan, heat exchanger,
1
louvers and interior of heater case.
Check relief valve and heat exchanger welds for leaks or
2 cracks. If leakage or cracks has occurred, replace heat ex-
changer immediately.
3 Check motor for smooth operation.
4 Check enclosure covers and conduit / cable connections
Inspect enclosures for debris or foreign material, that could
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potentially cause shorting.
Inspect all electrical wiring and connections, including termi-
nals, crimps, and wire insulation. Feel for loose connections
6
and look for signs of loose connections, such as discoloration
of terminals or wire insulation.
Check heating element resistance and insulation resistance
7
(MegOhm). See document PF506 for more information.
Action
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4. Disconnect unit from power before performing repairs
5. If during inspection, damage to threaded entries and/or
flame paths is located, do not repair. Take unit out of
service immediately and contact Chromalox to schedule
service.
6. Fan Motor bearings are permanently lubricated and do
not require maintenance.
Annually Monthly
X
X
X
X
X
X
X
Frequency
Every 3 Every 6
Months Months
X
X
X
X
X
X