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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
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Work Order Templates

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Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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Carrier Compressor 5H40

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Maintenance Plans for Carrier Compressor Model 5H40

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Compressor Maintenance

Check Lubrication System - Always check compressor oil level before starting unit. If oil is required, record date and amount added.

Use of accessory oil separator requires additional oil. Oil level and separator float valve movement during initial compressor operation should agree with instructions furnished with the oil separator.

CHECK OIL AND SHAFT SEAL TEMPERATURE - The normal operating temperature of the oil in the crankcase ranges from 100 F to 135 F when fully loaded. Do not permit maximum oil temperature to exceed 150 F.

Conditions under which such excessive temperatures could occur include situations where the compressor operates in a fully unloaded condition for an extended period, because the compressor would not be able to remove all of the heat generated by compression and friction. In such situations, use an oil cooler to maintain safe operating temperatures.

When crankcase oil temperature falls within the 120 to 135 F range, the shaft seal housing temperature should be approximately 140 to 150 F. Shaft seal housing temperatures above 170 F may cause shaft seal to age rapidly, and harden and crack.

Therefore: If shaft seal housing temperature exceeds 170 F, STOP THE COMPRESSOR. DO NOT restart until the cause of overheating has been identified, and the condition corrected.

OIL COOLER USAGE - The accessory oil cooler maintains safe operating oil temperatures when:

1. Applying long stroke compressors (5H46, 66, 86 and 126). For added reliability, an oil cooler is recommended on all long stroke models regardless of operating range or type of refrigerant. Additional heat of friction from extended piston travel on long stroke models increases oil temperatures.

2. The suction gas becomes highly superheated.

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1 Yearly Oil Filter Check

Check yearly for clogged filter, indicated by a greater than normal difference between oil pressure ahead of filter and after filter (before orifice elbow). When this difference exceeds 5 psig, change filter as follows:

1. Close oil-line shutoff valves on each side of filter.

2. Disconnect oil lines at filter connections.

3. Loosen filter bracket; remove and replace filter body.

The full-flow oil filter, on 5H120 and 5H126 compressors only, contains a replaceable cartridge.

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