Chiller PM tasks and procedures

Body

___ De-energize, lock out, and tag electrical circuit.
Condenser:
___ Remove debris from air screen and clean underneath unit.
___ Pressure wash coil with proper cleaning solution.
___ Straighten fin tubes with fin comb.
___ Check electrical connections for tightness.
___ Check for mounting for tightness.
___ Check for corrosion. Clean and treat with inhibitor as needed.
___ Clean fan blades.
___ Perform required lubrication and remove old or excess lubricant.
Compressor(s):
___ Check compressor oil level.
___ Run machine; check action of controls, relays, switches, etc. to see that:
___ Refrigerant sight glasses show full charges and low moisture (green spot reading)….contact the service contractor if either of these conditions are not acceptable.
___ Compressor(s) run at proper settings.
___ Suction and discharge pressures are proper.
___ Outlet water temperature is set properly.
___ Check and adjust vibration eliminators.
Controls:
___ Check operation of all relays, pilot valves, and pressure regulators.
Fan Motors:
___ Check ventilation ports for soil accumulations; clean if necessary.
___ Clean exterior of motor surfaces of soil accumulation.
___ Lubricate bearings according to manufacturer’s recommendations.
___ Remove filer and drain plugs (use zerk fittings if installed).
___ Free drain hole of any hard grease (use piece of wire if necessary).
___ Add grease. Use good grade lithium base grease unless otherwise specified.
___ Check motor windings for accumulation of soil. Blow out with low pressure air or vacuum as needed.
___ Check hold-down bolts and grounding straps for tightness.
___ Remove tags, start unit, and check for vibration or noise
___ Clean up work area and remove trash.
___ Record the time taken to service and the material used on the PM work order.

Chiller PM tasks and procedures

Body

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Details