McQuay Air Conditioning System SWP 080

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

1 Check area - Clean and organize bearing installation area and keep well lit. Be sure mounting surfaces are clean and flat

2 Check shaft - Shaft should be within tolerance range shown in Table 20, clean, and free of nicks and burrs. Mount bearing on unused section of shafting or repair/replace shafting as required

3 Install unit - Slide unit onto shaft. If it is difficult to mount bearing on shaft, use a piece of emery cloth to reduce any high spots on shaft. Do not hammer on any component of the bearing

4 Fasten unit in place - Install housing mounting bolts, check and align bearing and tighten mounting bolts to recommended fastener torques. Exercising extreme caution and safety, rotate shaft slowly to center bearing;

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

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;