Table 149 Table of preventive maintenance actions

Frequency

Air lines

1. Check for leaks Blowers

1. Inspect belts for tension and alignment

2. Inspect pulley wheels

3. Inspect for dirt and grease Boilers (see Section 14.2.1)

1. Check temperature and pressure

2. Clean tubes and other heating surfaces

3. Check water gauge glass

4. Remove scale

5. Perform flue-gas analysis

6. Calibrate controls Chillers (Ref. 5)

1. Clean condenser and oil cooler

2. Calibrate controls

3. Check electrical connections

4. Inspect valves and bearings Condensate return system

1. Check valves, pumps, and lines Cooling coils

1. Brush and wash with soap

2. Clean drip pan drain Compressors

1. Check oil levels

2. Check wiring

3. Visual check for leaks

4. Log oil temperature and pressure

5. Remove rust with wire brush

6. Replace all drive belts Condenser

1. Clean fan

2. Brush off coil Controls

1. Calibrate thermostats

2. Get professional inspection of control system

3. Check gauges to see that readings are in correct range

4. Examine control tubing for leaks Cooling towers (Ref. 3)

1. Inspect for clogging and unusual noise

2. Check gear reducer oil

3. Inspect for leakage

4. Tighten loose bolts

5. Clean suction screen Dampers

1. Check closure

2. Clean with brush

Annually

Daily

As needed

Daily

Annually

Monthly

Annually

Annually

Annually

Quarterly or when needed When needed

Monthly

Annually

Monthly

Monthly

Annually

Annually

Annually Monthly

Semiannually (Ref. 4)

According to equipment specifications

Monthly

Monthly

Daily

Level—weekly. For sludge andwater—

Semiannually

Semiannually

Weekly

Every 6 weeks Semiannually monthly

Table 14.9 (Continued)

Frequency

Ductwork

1. Inspect and refasten loose insulation

2. Check and repair leaks

3. Inspect for crushed or punctured ducts; repair Electrical system

1. Inspect equipment for frayed or burned wiring

2. Perform electrical load analysis

Semiannually

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