Specifications

97
Service and Maintenance MVCU-2009
Pre Start Up Maintenance
(After Extended Shutdown)
Inspect thoroughly and clean indoor and outdoor units.
Clean or replace air fi lters.
Clean condensates drain line.
Clean clogged indoor and outdoor coils.
Check fan imbalance before operation.
Tighten all wiring connections and panels.
Check for refrigerant leakage.
Caution
Do not charge OXYGEN, ACETYLENE OR OTHER FLAMMABLE and poisonous gases into the unit when
performing a leakage test or an airtight test. These gases could cause severe explosion and damage if exposed to
high temperature and pressure.
It is recommended that only nitrogen or refrigerant be charged when performing the leakage or airtight test.
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12_Service and Maintenance.indd 9712_Service and Maintenance.indd 97 4/28/2009 11:29:54 AM4/28/2009 11:29:54 AM