Carrier 19XB Troubleshooting, Pumpout Compressor Oil Requirements, Symptom Probable Cause Remedy

PUMPOUT COMPRESSOR OIL CHARGE Ð Use oil con- forming to Carrier speci®cations for reciprocating compres- sor use. Oil requirements are listed in Table 6.

Table 6 Ð Pumpout Compressor Oil Requirements

	ISO	CARRIER	CARRIER
REFRIGERANT		SPECIFICATION
	VISCOSITY		PART NO.
		NO.
R-22	86	PP49-7	PP23BZ101
R-134a	68	PP47-31	PP23BZ103

The total oil charge, 4.5 pints (2.6 L), consists of 3.5 pints (2.0 L) for the compressor and one additional pint (0.6 L) for the oil separator.

Oil should be visible in one of the pumpout compressor sight glasses both during operation and at shutdown. Always check the oil level before operating the pumpout compres- sor. Before adding or changing oil, relieve the refrigerant pressure as follows:

1.Attach a pressure gage to the gage port of either pumpout compressor service valve (Fig. 10).

2.Close the suction service valve and open the discharge line to the pumpout storage tank or the chiller.

3.Operate the compressor until the crankcase pressure drops to 2 psig (13 kPa).

4.Stop the pumpout compressor and isolate the pumpout system by closing the discharge service valve.

5.Slowly remove the oil return line connection (Fig. 9). Add oil as required.

6.Replace the connections and reopen the pumpout com- pressor service valves.

Storage Tank Ð To prevent moisture and contami- nants from entering the storage tank, maintain positive pres- sure in the tank when not transferring refrigerant. Leak test the storage tank according to your normal vessel leak test procedures and schedule.

Ordering Replacement Parts Ð The following in- formation must accompany an order for Carrier-speci®ed parts:

·machine model number and serial number

·name, quantity, and part number of the part required

·delivery address and method of shipment

TROUBLESHOOTING

Information on troubleshooting for the PPS is included in Table 7.

Table 7 Ð Troubleshooting

SYMPTOM	PROBABLE CAUSE	REMEDY
Compressor does not run	Main power line open	Replace fuse or reset circuit breaker.
	Loose terminal connection	Check connections.
	Improperly wired controls	Check wiring and rewire.
	Low line voltage	Check line voltage; determine location of voltage drop.
	Compressor motor defective	Check motor winding for open or short. Replace compressor if
		necessary.
	Seized compressor	Replace compressor.
	High level gage alarm	Check refrigerant level and remove excess.
Compressor cycles on	High-pressure control erratic in action	Check capillary tube for pinches. Set control as required..
high-pressure control
	Discharge valve partially closed.	Open valve.
	Air in system	Purge system.
	Condenser scaled.	Clean condenser.
	Condenser water pump or fans not operat-	Start pump or fans.
	ing.
Unit operates too long	Isolation valves partially open	Close valves.
System Noises	Piping vibrations	Support piping as required. Check for loose pipe connectors.
	Compressor noisy	Check valve plates for valve noise. Replace compressor (worn
		bearings). Check for loose compressor holddown bolts.
	Insufficient compressor oil	Add oil.
Compressor Loses Oil	Leak in system	Locate and repair leak.
	Plugged or stuck compressor oil return	Repair or replace valve.
	check valve
	Dirty accumulator	Clean accumulator.

Copyright 1996 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, speci®cations or designs without notice and without incurring obligations.

Book	2	PC 211	Catalog No. 531-927	Printed in U.S.A.	Form 19XB-1SI	Pg 16	6-96	Replaces: New
Tab	5a