Trane CSRA025FAF0, Установка, эксплуатация и обслуживание

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CSRA-SVX02A-EN 75
Service & Maintenance
Compressor Operational Sounds
Because of the scroll compressor design, it emits a higher frequency tone
(sound) than a reciprocating compressor. It is designed to accommodate
liquids, both oil and refrigerant, without causing compressor damage. The
following discussion describes some of the operational sounds that
differentiate it from those typically associated with a reciprocating
compressor. These sounds do not affect the operation or reliability of the
compressor.
At Shutdown:
When a Scroll compressor shuts down, the gas within the scroll expands and
causes momentary reverse rotation until the discharge check valve closes.
This results in a “flutter” type sound.
At Low Ambient Start-Up:
When the compressor starts up under low ambient conditions, the initial flow
rate of the compressor is low due to the low condensing pressure. This
causes a low differential across the thermal expansion valve that limits its
capacity. Under these conditions, it is not unusual to hear the compressor
rattle until the suction pressure climbs and the flow rate increases.
Scroll Compressor Replacement
Table 13 lists the specific compressor electrical data and the circuit breaker
operating ranges.
The compressor manifold system was purposely designed to provide proper
oil return to each compressors. The refrigerant manifolded system must not
be modified in any way.
Note: Altering the manifold piping may cause oil return problems and
compressor failure.
Should a compressor replacement become necessary and a suction line
filter drier is to be installed, install it a minimum of 18 inches upstream of the
oil separator tee. Refer to the illustration in Figure 25.
Anytime a compressor is replaced, the oil for each compressor within the
manifolded set must be replaced.
The scroll compressor uses Trane OIL-42 without substitution. The
appropriate oil charge for a 9 and 10 Ton scroll compressor is 8.5 pints. For a
14 and 15 Ton scroll compressor, use 13.8 pints.