Air Conditioning, Make Up Air, & Exhaust Equipment Checklist

A) Fall Heating Start-Up

• Confirm crankcase heater operation
• Check for oil or gas leaks
• Check and clean flame safeguard
• Inspect coil/spark/electrodes
• Confirm pilot operation
• Check primary & secondary air
• Change air filters
• Check drive belts and pulleys for wear
• Lubricate motors and bearings (if necessary)
• Check operating temperatures
• Check ventor motor controls
• Check burner and fan operation

B) Mid Season (twice per year)

• Check operating temperatures
• Check operating and safety controls
• Check oil level
• Check refrigerant charge (visual)
• Check evaporator & drain
• Check TX valve operation
• Change air filters
• Lubricate motors and bearings (if necessary)
• Heating
• Check flame safeguard
• Check ignition system
• Check pilot & main frame
• Check ventor motor
• Inspect electrical connections contactors, relays, & safety controls
• Check fan blades for cracks

C) Spring Cooling Start-Up

• Confirm crankcase heater operation
• Check compressor
• Check operating temperatures
• Check operating & safety controls
• Check heat exchanger for cracks
• Check compressor oil levels, and amperages
• Change air filters
• Clean condensate P-trap
• Check drive belts and pulleys for wear
• Lubricate motor and bearings (if necessary)
• Check refrigerant charge (visual)
• Check un-loader operation
• Check breeching & draft hood

D) Optional Annual Service

• Pump down efficiency test
• Compressor winding test
• Oil & refrigerant analysis
• Power wash condenser coil

Process Cooling Checklist

Computer Room Systems:

• Change air filters (4" - 40% efficient)
• Check airflow through floor
• Check refrigerant charge
• Check wet bulb temperature
• Check relative humidity
• Check superheat at TX valve
• Check drain pan
• Check operating voltage
• Clean sensors
• Lubricate motors and bearings
• Check crankcase heater
• Check evaporator coil
• Check dry bulb temperature
• Check condenser coil & fans
• Check condenser limit control
• Check glycol pump(s) & change over
• Check microprocessor control panel and control operation.
• Check Glycol consistency.
• Check with computer operator for any problems.

Air Cooled Condenser

• Check if 1st fan motor speed control (if applicable)
• Check operation of the fan motor stats

Dry Cooler

• Check pump operation
• Check water/glycol level in
• Check mixture
• Check for water leaks
• Verify pump control operation
• Check transformer

Optional Annual Service (recommended for older units)

• Pump down efficiency test
• Compressor winding test
• Data Guard III
• Oil and refrigerant analysis
• Power wash condenser and coil

Refrigeration Checklist

Refrigeration Equipment:

• Walk-in Coolers and Freezers
• Reach-in Coolers and Freezers
• Preparation Counters
• Ice-Makers

Semi-Annual Inspections

• Check and clean evaporator and condenser coils.
• Check defrost operation on freezers
• Check crankcase heater operation
• Check amperage draw on all motors and compressors
• Check water valve operation on water cooled units.
• Check hi-limit and low pressure controls
• Check low ambient controls
• Check freeze start controls
• Check temperature setting controls
• Check for oil leaks
• Check freon levels
• Check indicator lights and door seals.
• File report to customer detailing work done and recommend repairs or procedures.

General Checklist

Air Compressor:

• Drain receiver and check traps for reliable operation.
• Change oil, and eliminate any oil leaks.
• Check and adjust belts, align sheaves.
• Check and clean air intake filter.
• Check un-loader and check valve operation.
• Check PR station for correct adjustments.
• Check PRV valve.
• Check PE switch, starter connections, tighten connections as required.
• Wipe down and generally clean all surfaces.

Dryers:

• Check refrigerant head pressure.
• Check refrigerant suction pressure and temperatures.
• Clean condenser and cover screens.
• Check drain trap for trouble free operation.
• Wipe clean all exterior surfaces.

Reducing Stations:

• Change particulate filter.
• Change oil filter.
• Check PRV for correct setting.
• Check low pressure.
• Check valve setting and make sure by-pass is closed.

General:

• Review sequence of all control operations.
• Check and calibrate all room thermostats.
• Check and calibrate all fan room transmitters, actuators, static pressure controllers and controlled devices.
• Check all EP and PE switches.
• Check all dampers for free operation.
• Check all pilot positioners.
• Check and fix all air leaks.
• Check for any trace of moisture at low points in the pneumatic circuit

Loop Checklist

Boilers

• Check boiler bases for evidence of leakage and progressive corrosion.
• Check expansion tank, drain and recharge if system is water logged.
• Check and record all temperature and pressure gauge readings.
• Check operation of low safety controls.
• Check operation and settings of pressure regulating valves.
• Blow down boilers in accordance with manufacturers specifications.
• Check circulating pump seals, couplings, motors and lubricate same.
• Check radiator vents and complete written report.

Optional Extra - Summer Shut Down:

• Clean combustion chamber.
• Brush out fire tubes.
• Check flue for reliable operation.
• Check and adjust burner and standing pilot as required.
• Do complete combustion gas analysis and complete written reports.

Domestic Hot Water Tanks

• Check burner assembly and flame
• Check pilot assembly
• Check power or gravity vent
• Check for water leaks
• Flush out appropriate amount of water for size of tank
• Visually inspect for turbidity in water
• Visual inspection of temperature and relief valve
• Visual inspection of anti-siphon valve
• Visual inspection of trap seal primer if applicable

Circulation Pumps

• Check pump seal for water leaks
• Lubricate bearings where applicable
• Visual inspection of operation

Cooling Tower:

• Flush tower
• Check belts & tighten
• Check nozzles
• Check sump screen
• Grease/oil motor bearings
• Check water quality & float level