Carlyle Compressor Reciprocating Compressor 06DM3136

If oil stays clean and acid-free, the system is clean. If oil shows signs of contamination, follow the next steps.

Did you change the filter-drier?

Did you clean the suction strainer?

If filter-drier or suction strainer is dirty or discolored, repeat this step until system is cleaned.

Sign off on the daily compressor maintenance

Warning: This maintenance check requires trained personnel with PPE!

Oil pressure tap located in the bearing head assembly?

Oil pump assembly contained in the pump end bearing head aluminum casting?

Pump end main bearing is a machined part of the casting?

Four (4) cap screws from the bearing head cover plate removed?

Oil feed guide vane and spring removed?

Two (2) drive segment cap screws from the end of the crankshaft removed?

Eight (8) cap screws holding the bearing head assembly to the crankcase removed?

REMOVE, INSPECT AND REPLACE CYLINDER HEAD AND VALVE PLATE ASSEMBLY

To test for leaking discharge valves or blown cylinder head or valve plate gaskets:

Observe suction and discharge pressure equalization.

If valves are leaking or a gasket is blown, the pressure will equalize rapidly.

Maximum allowable discharge pressure drop is 3 psi per minute after initial drop of 10 to 15 psi in first half minute.

New reed valves may require 24 to 48 hour run-in time to seat completely.

A compressor bank (head) with a blown gasket can also usually be detected by touch since the head temperature will normally be much hotter than a bank with good gaskets.

If there is an indication of loss of capacity and discharge valves are functioning properly, remove valve plate assembly and inspect suction valves.

Warning: This procedure is for trained personnel only

Is the compressor with metal core gaskets?

If the compressor is with metal core gaskets, no re-torque is required

Did the gear cap screws lose hold-down torque?

If the gear cap screws lost hold-down torque, proceed to re-torque

Sign off on the gear cap screws maintenance

Warning: This inspection requires trained personnel with PPE!

After 2 to 4 hours of operation, inspect compressor oil for discoloration and/or acidity.

Does the oil show signs of contamination?

If oil shows signs of contamination, replace oil and filter-driers and clean the suction strainer.

NOTE: When testing for moisture and acidity, be sure the test kit used is appropriate for the refrigerant (CFC, HCFC, or HFC) and the oil (mineral, alkylbenzene, or POE) in the system.

Select the type of refrigerant used

Carrier’s Total Test Kit is accurate for CFC and HCFC air-conditioning applications. If used with POE oils, Total Test Kit will indicate acid, but is not an accurate indicator of moisture.

Sign off on the initial 2 hours motor inspection