Installation, Operation and Maintenance Manual
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NOTICE
. When reclaim, charging and refrigerant handling, follow the EPA and
related environmental protection codes including local and national codes.
Service technicians must maintain all required permits.
NOTICE
. The following information is only for guideline and reference only. This
will vary due to variations with refrigerant component size and configuration.
Also, may vary due to product improvement or due to special job specifications.
This does not apply to field supplied refrigerant component.
NOTICE
. This only applies to replacing with the same manufacture, model, size
and configuration as the original component.
5.
Turn OFF all remote electric power sources to the unit. Use lock-out tag-out protection.
6.
Remove all compressor and fan motor fuses for safety reasons. Remember to replace after finish with
change out.
7.
Wear protective goggles and wear required. System contains oil and refrigerant under pressure.
8.
Remove and reclaim all refrigerant per your local codes.
9.
Use care if returning part to Data Aire Service Department.
10.
Clean out all oil or debris from part before shipping back to Data Aire Service Department.
11.
Deburr and clean out all joints or connections prior to installing replacement part.
12.
Have ready replacement insulation, as required.
7.18.1
Compressor Checklist
•
Always check with the operating personnel who are using the equipment to see if there have been any
reports of abnormal or erratic operation.
•
Install a temporary test gauge set and check the compressor suction and discharge pressures to confirm
they are within the normal operating range for the given conditions and the temperature of the condensing
medium. If there are any indications of abnormal operation such as short cycling or excessive compressor
temperatures, the cause must be found, and the malfunction corrected.
•
Check the oil level at the compressor oil sight glass and add oil until the bottom half of the 2 circles are not
visible in the sight glass. It should be kept in mind that some slight fluctuation in oil level may occur during
an operating cycle. So long as the oil level is maintained well within the sight glass such fluctuations are not
harmful.
•
If the oil is black in color, the crankcase should be drained, and the oil replaced. If there has been a recent
compressor failure on the system and the oil has an acid odor, a fresh filter drier should be installed in the
suction line and left in the line for a period of 48 hours. If the oil is still discolored, the suction line filter
drier is still discolored, the suction line filter drier element should again be changed.
•
Check for any indications of liquid refrigerant flooding such as sweating or frosting of the compressor, rust
on the suction service valve or compressor body, tripping of the oil pressure safety control, audible slugging,
or excessive foaming in the crankcase. If there is any question as to liquid control, the operation of the