5.Open the drain located on the shell of the cooler/®lter. Run a hose from the drain to a bucket to catch the oil.

6.Once the pressure has been relieved and the oil drained, loosen the bolts that hold the cover on the ®lter body. Remove the old ®lter cartridges and replace with a new ®lter cartridge. Assemble the ®lter assembly (®lters, spacer, and stopper assembly), and make sure that the spring is centered against the ®lter assembly as shown in Fig. 44.

7.Replace the drain ®tting, using standard practices to en- sure a leak-tight joint. Evacuate the air from the cooler/ ®lter assembly.

8.Once the assembly has been evacuated, open the isola- tion valves.

9.Connect power to the oil heater and oil pump. The oil heater should turn on and warm the oil to 140 to 150 F (60 to 66 C). Operate the oil pump for 2 minutes. Add oil, if required, to keep the level up in the lower sight glass.

Oil should be visible in the reservoir sight glass during all operating and shutdown conditions.

EXTERNAL GEAR OIL FILTER Ð Change the oil ®lter annually or whenever the chiller is open for repairs. The 17EX external gear lubrication system has an isolatable ®lter. Use the following procedure.

1.Make sure that the compressor is off and the compressor disconnect is open.

2.Disconnect the power to the oil heater, if equipped, and to the oil pump.

3.Close the line valves to the ®lter.

4.Relieve any pressure from within the ®lter by using the pressure connection on the oil feed line valve to the com- pressor. Run a hose from the connection to a bucket to catch the oil.

5.Open the drain located on the shell of the cooler/®lter. Run a hose from the connection to a bucket to catch the oil.

6.Once the pressure has been removed and the oil drained, loosen the bolts that hold the cover on the ®lter body. Remove the oil ®lter cartridges and replace with new car- tridges. Assemble the ®lter assembly (®lters, spacer, and stopper assembly), and make sure that the spring is cen- tered against the ®lter assembly, as shown in Fig. 44.

7.Replace the drain ®tting, using standard practices to en- sure a leak-tight joint.

8.Open the isolation valves.

9.Connect power to the oil heater, if equipped, and oil pump. Operate the oil pump for 2 minutes. Add oil, if required, to keep the level up in the sight glass.

Oil should be visible in the reservoir sight glass during all operating and shutdown conditions.

Oil Speci®cations Ð If oil is to be added, it must meet the Carrier speci®cations shown in Table 11.

Oil Changes Ð Carrier recommends changing the oil after the ®rst year of operation and every three to ®ve years thereafter as a minimum. Carrier also recommends a yearly oil analysis. However, if a continuous oil monitoring system is functioning and a yearly oil analysis is performed, the time between oil changes can be extended.

COMPRESSOR OIL

1.Open the control and oil heater circuit breaker.

2.Drain the oil reservoir by opening the oil charging valve, (Fig. 2, Item 22). Slowly open the valve against refrig- erant pressure.

3.Change the oil ®lter at this time. See the Changing the Oil Filters section, page 76.

4.Charge the chiller with approximately 20 gallons (76 L) of oil for FX (size 531-599) style compressors in order to bring the level to the middle of the upper sight glass (Fig. 2, Item 21). Turn on the power to the oil heater and let the PIC warm it up to at least 140 F (60 C). Operate the oil pump manually, through the control test, for 2 min- utes. The oil level should be between the lower sight glass and one-half full in the upper sight glass for shutdown conditions.

EXTERNAL GEAR OIL Ð Proper lubrication is vital to maintain gear drive performance. After 500 hours or 4 weeks of initial operation, whichever is ®rst, the external gear drive should be thoroughly drained, ¯ushed, and re®lled with the proper lubricant. Under normal operating conditions, the lu- bricant should be changed every 2500 hours or 6 months, whichever comes ®rst. This change frequency can be ex- tended if an oil sample analysis indicates a very limited deg- radation or contamination.

Table 11 Ð 17EX Chiller Oil Speci®cations

 

 

 

 

PUMPOUT

SPECIFICATION

COMPRESSOR

MOTOR SLEEVE

EXTERNAL

COMPRESSOR

BEARINGS

GEAR

AND OIL

 

 

 

 

 

 

SEPARATOR

Oil Type*

Inhitited Polyolester-Based

Mineral-Based, Rust and

Rust and Oxidation

Reciprocating

 

Synthetic Compressor Oil

Oxidation Inhibited Turbine

Inhibited Oil

Compressor Oil

 

 

Grade Oil

 

 

Viscosity at

ISO 68

ISO 32

ISO 68

ISO 68

100 F (37 C)

(300 SSU)

(150 SSU)

(300 SSU)

(300 SSU)

Carrier Part Number

PP23BZ107

PP23BZ091

PP23BB005

PP23BZ103

Carrier Speci®cation

PP47-12

PP16-0

PP16-2

PP47-31

Recommended

ICI, Emkarate RL68H

Mobil, DTE Light

Mobil Oil, DTE Heavy Medium

Castrol Icematic SW68

Manufacturer

 

Texaco, Regal R & 0432

Texaco, Regal UR & 068

ICI Emkarate RL68HP

 

 

Sun Oil, Sunvis 932

Chevron, OC #68

 

 

 

Chevron, GST ISO 32

NOCO, Turbine T-68

 

Capacity

20 gal (76 L)

0.6 gal (2.3 L) per bearing

17 gal (41.6L)

Compressor:

 

 

 

 

4.5 pints (2.6 L)

 

 

 

 

Oil Separator:

 

 

 

 

1 pint (0.6 L)

LEGEND

 

 

 

SSU Ð Saybolt Universal Seconds

*Oil type speci®ed for chillers using HFC-134a refrigerant.

77

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Carrier specifications Compressor OIL, 17EX Chiller Oil Specications, Pumpout

17EX specifications

The Carrier 17EX is recognized as an innovative air conditioning solution that combines efficiency with advanced technology. This model is designed to meet the increasing demands of residential and commercial cooling needs while maintaining environmental consciousness.

One of the standout features of the Carrier 17EX is its impressive Seasonal Energy Efficiency Ratio (SEER) rating. With a SEER rating that often exceeds 17, this unit ensures optimized energy consumption, significantly lowering operational costs for users. The incorporation of advanced compressor technology allows the system to adjust its cooling output based on the specific needs of the environment, thus providing both comfort and energy savings.

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