Operating instructions

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APPENDIX F — MAINTENANCE SUMMARY AND LOG SHEETS
30XA Maintenance Interval Requirements
NOTE: Equipment failures caused by lack of adherence to the Main-
tenance Interval Requirements are not covered under warranty.
WEEKLY
Compressor Check Oil Level. Economizer None.
Cooler None. Controls Review Alarm/Alert History.
Condenser Inspect and clean all coils as necessary. Starter None.
MONTHLY
Compressor Check Oil Level. Economizer None.
Cooler Check moisture. Controls
Check accuracy of tranducers and thermistors. Verify flow
switch operation.
Condenser Inspect and clean all coils as necessary. Starter Inspect all contactors.
QUARTERLY
Compressor Check Oil Level Economizer Check all connections for leaks.
Cooler Check refrigerant charge. Check for leaks. Controls
Perform an Automated Controls test. Run all Compressors
and ensure proper operation. Verify operation of units flow
switch.
Condenser Check for leaks. Starter None.
ANNUALLY
Compressor
Check Oil Level. Obtain and test an oil sam-
ple.
Economizer Verify proper operation of EXVs.
Cooler
Check approach on unit to determine if tubes
need cleaning (flooded cooler units only).
Check for temperature drop across filter drier
to determine if filter needs replacement.
Controls
Perform an Automated Controls test. Run all Compressors
and ensure proper operation.
Condenser
Check fan blades and motors for cracks and
loose bolts. Tighten bolts as needed.
Starter
Inspect all electrical connections and tighten as needed.
Measure current to each compressor and inspect
contactors.