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Maintenance
7.5 Start-Up After Extended Shutdown
After any extended period of shutdown, prepare the unit for operation as follows:
(1) Thoroughly inspect and clean the unit.
(2) Clean or replace the air filter.
(3) Clean the condensate drain lines.
(4) Remove any accumulated dirt from the condenser and evaporator coils.
(5) Check the fan screw tightness.
(6) Check the fan balance and try to operate the fan.
(7) Inspect the refrigerant piping for leakage.
(8) Tighten all wiring connections and access panels.
7.6 Replacement of Parts
Replacement of parts should be performed by ordering from the HITACHI Parts List. The Form A HITACHI
Recommended Spare Parts List is advisable. When replacement of parts becomes necessary, prepare the parts
shown in the Form A Parts List.
