McQuay Air Conditioning System SWP 035

CAUTION! Bearing overheating potential. Can damage the equipment. Do not overlubricate bearings. Use only a high grade mineral grease with a 200°F safe operating temperature. See below for specific recommended lubricants

NOTE! Supply and return fan motors should have grease added after every 2000 hours of operation. Using the following procedure, relubricate the bearings while the motor is warm, but not running. Use one of the greases shown in Table 16

Remove and clean upper and lower grease plugs

Insert a grease fitting into the upper hole and add clean grease (Table 16) with a low pressure gun

Run the motor for five minutes before replacing the plugs

NOTE! Specific greasing instructions are located on a tag attached to the motor. If special lubrication instructions are on the motor, they supersede all other instructions;

Sign off on the motor bearing lubrication

WARNING! Improper maintenance can cause equipment damage, severe personal injury, or death. Installation and maintenance must be performed only by trained, experienced personnel who are familiar with local codes and regulations and are experienced with this type of equipment

WARNING! Moving machinery and electrical power hazards. Can cause severe personal injury or death. Disconnect and lock off power before servicing equipment

CAUTION! Sharp edges are inherent to sheet metal parts, screws, clips and similar items. May cause personal injury. Exercise caution and wear protective gear when servicing equipment

Tighten all belts, setscrews, and wire connections.

Clean the evaporator or economizer coils mechanically or with cold water, if necessary.

Clean the condenser and economizer tubes periodically. Clean condenser and economizer coils chemically or mechanically.

Lubricate motor and fan shaft bearings

Align or replace belts as needed

Check area - Clean and organized bearing installation area and well lit. Mounting surfaces are clean and flat

Check shaft - Shaft is within tolerance range shown in Table 20, clean, and free of nicks and burrs. Bearing is mounted on unused section of shafting or shafting is repaired/replaced as required

Install unit - Unit is slid onto shaft. If it was difficult to mount bearing on shaft, a piece of emery cloth was used to reduce any high spots on shaft. No component of the bearing was hammered on

Fasten unit in place - Housing mounting bolts are installed, bearing is checked and aligned and mounting bolts are tightened to recommended fastener torques. Extreme caution and safety was exercised, shaft was rotated slowly to center bearing