PMScope of Service – ASI

pm scope of services

The preventive maintenance (PM) Inspection shall include completion of the services noted below…
A. PRE-SEASON COOLING
  • Check drive belts
  • Change air filters (Supply Media)
  • Check operation of disconnect
  • Tighten electrical connections
  • Check contactors
  • Check for compressor ampere draw
  • Check for excessive vibration
  • Check temp. differential across coils
  • Check superheat & sub-cooling
  • Check suction, oil, discharge and pressures
  • Check freon levels and adjust
  • Check compressor oil levels
  • Check fan rotation
  • Cycle & test safety controls
  • Lubricate bearings as applicable
  • Check bearing wear & end-play
  • Check space thermostat calibration & settings
  • Check settings of time clocks
  • Check for refrigerant leaks
  • Check condensate drain pans, drains
  • Check condenser/evaporator coils
  • Make written report of required/ recommended repairs
B. PRE-SEASON HEATING
ELECTRIC HEATING
  • Lubricate bearings, as applicable
  • Check bearing wear & end-play
  • Electric Heating Check burner operation of gas unit
  • Check drive belts Check operating controls
  • Change air filters (Supply Media)
  • Tighten all electrical connections
  • Check element voltage & amperage
  • Check settings of time clocks
  • Check condition of disconnect
  • Make written report of cycle & test safety controls
  • Lubricate bearings as possible
  • Check bearing wear & end-play
  • Check motor mounts
  • Check space thermostat calibration & setting
  • Check space thermostat calibration & setting
C. OPERATIONAL INSPECTIONS
COOLING SEASON OPERATIONAL INSPECTION:
  • Check drive belts
  • Change air filters (Supply Media)
  • Tighten electrical connections
  • Check voltage
  • Check contractors
  • Check for excessive vibration
  • Lubricate bearings as applicable
  • Check bearing motor wear & end-play
  • Check motor mounts
  • Check condensate drain pans for cleanliness
  • Check condenser & evap. coils/drains
  • Check for refrigerant leaks
  • Check superheat & sub-cooling levels & operation
  • Check suction, oil, discharge pressures
  • Check freon levels & adjust
  • Check compressor oil levels
  • Check fan rotation
  • Check space thermostat calibration & setting
  • Check settings of time clocks
  • Make written required/recommended repairs
HEATING SEASON OPERATIONAL INSPECTION
  • Check drive belts
  • Change air filters (Supply Media)
  • Tighten electrical connections
  • Lubricate bearings as possible
  • Check bearing wear & end-play
  • Check burner operation of gas unit
  • Check operating controls
  • Check space thermostat calibration & setting
  • Make written required/recommended repairs

WATER SOURCE HEAT PUMPS UNIT HEATERS & FURNACES

A. Operation Inspections
Heating Season Start-Up
  • Change air filters (Supply Media) Turn gas supply on
  • Check freon levels & adjust Check housing mounts
  • Check evaporator coil, condensate pans/drains
  • Check for external/internal dirt accumulation
  • Check operating suction, oil & discharge pressures
  • Check fan for proper rotation & alignment
  • Check compressor oil levels Check vibration of fan
  • Check super heat & sub-cooling levels & operation
  • Check superheat & sub-cooling
  • Check motor current
  • Check amperage reading, voltage readings
  • Lubricate motor bearings
  • Check contactors, disconnects
  • Check drive belts, if applicable
  • Check electrical wiring for loose or broken wires
  • Check flame composition, & shape
  • Check drives, adjust belt tension
  • Check orifices, passages, & nozzles
  • Lubricate fan motors, if not sealed Adjust fuel/air ratio
  • Check fan rotation Check gas pressure regulator
  • Check operation of safety controls
  • Perform operational tests & assure proper settings
  • Check T-stat & time clock settings Operating Controls
  • Check fan vibrations, freon leaks
  • High temperature safety control
  • Make written report of req’d./recommended repairs
  • Flame failure safety limit
  • Make written report of req’d./recommended repairs
B. EVAPORATIVE COOLERS
Cooling Season Shut-Down
  • Turn gas supply Off
  • Check housing mounts for security
  • Replace filter media
  • Check & Inspect for any defects
  • Check to see that the cooler is level
  • Check orifices, passages, nozzles
  • Remove cover & open supply air dampers, lubricate
  • Check for external/internal dirt accumulation
  • Check basin & supply water treatment chemicals
  • Make written report of req’d./recommended repairs
  • Turn water supply On
  • Check for water leaks, & all hose connections
  • Turn electrical power On to Pump & Cooler
  • Check water distribution for an even flow
  • Check float operation & shut Off
  • Check drain lines
  • Check motor vibration & lubricate bearings
  • Check drive belts
  • Check starter coils, contacts, & electrical
  • Check operating voltage
  • Check operating controls
  • Check for corrosion, external/internal dirt
  • Make written report of req’d./recommended repairs
Heating Season Shut-Down
  • Turn electrical power Off to Pump & Cooler
  • Turn water supply Off
  • Drain water from basin & lines
  • Close supply air dampers
  • Put cover on, if possible

REFRIGERATION-PM SCOPE OF SERVICES

  • Check doors – condition and operation
  • Check doors – self closing
  • Check doors seals – condition and cleanliness
  • Check thermometer for operation
  • Check evaporative coils
  • Check evaporative motors