Preventive Maintenance

Preventative MaintenanceKeeping your system properly maintained will lower energy and repair costs, prevent breakdowns and prolong the life of your equipment.

Preventative maintenance includes inspection and cleaning of all components for proper operation in the following applications:

We have Preventative maintenance programs to fit any size application and meet your maintenance needs monthly, quarterly or annually.

Chiller Systems
Record suction and discharge. Check oil pressure. Inspect refrigerant controls. Inspect refrigerant charge. Inspect safety controls. Inspect low pressure cut out. Inspect high pressure cut out. Inspect operation of crankcase heater. Inspect shaft seals for signs of leaking. Inspect operation of heat pump changeover. Inspect valves. Check temperature drops across dryers and strainers. Inspect Solenoid valves. Check oil color and level through sight glass. Check capacity control operation.

Boilers
Brush and vacuum clean flue passages. Clean combustion chamber. Check combustion chamber for fatigue. Check for visible leaks. Check overall integrity of the boiler. Clean and inspect low water cut-offs. Check condensate pump controls. Check automatic boiler feed. Lubricate all motors. Check limits and safeties. Check flue pipe for fatigue. Clean and service burner (nozzles, ignition assembly, fuel metering devices, motor and fan, strainers and filters, clean entire burner housing). Clean and check combustion control. Start and check for correct fuel to air ratios and for proper operation.

Multi-Zone Air Handling System
Lubricate fan bearings; fan belts check; adjust and/or change (if needed); fans and fan drive alignment; outside air intake screens; fan coil units; condensate pans and drains; expansion valves; bulb clamp; fans and scrolls; condition of cooling and exhaust system.

Air Handling System
Lubricate fan bearings; fan belts check; adjust and/or change (if needed) fans and fan drive alignment; outside air intake screens; fan coil units; drip pans and drains; expansion valves; bulb clamp; fans and scrolls; condition of cooling and exhaust system.

Split Systems
Inspect all components for proper operation. Test all safety controls. Measure operating voltages and amperages. Measure operating temperatures. Measure compressor operating pressures, sequencing and temperatures. Inspect hot gas bypass valve and adjust if necessary. Adjust unloaders for proper capacity control. Check thermostatic expansion valve operation and condition. Inspect head pressure controller(s). Inspect oil level at sight glass. Inspect filter drier indicator for proper conditions. Inspect evaporator and condenser coil for leaks. Inspect heat exchanger condition. Inspect condensate pans and drains, remove visible dirt. Check supply fan motor operation and condition. Inspect v-belts and motor bearings. Inspect economizer and damper operations. Test, lubricate and adjust economizer dampers and linkage. Inspect electrical components, terminal connections and wiring.

Electrical
Record motor amperage and compare to rating. Lubricate motor bearings; noise and vibrations; connections on magnetic starters; voltage amperage on electrical heaters compare with rating. Make sure all control boxes have proper covers.

Control Compressor
Drive belt tension (adjust or change if needed) and pulley alignment; oil level; drain condensate from receiver; operation and calibrations of pressure switch; operation and adjustment of pressure reducing valve.

Pneumatic Air Dryer
Condenser coils; drain condensate; oil separator; air filter.

Exhaust Fans
Inspect bearings and shafts. Inspect integrity of fan wheels. Check motor amperage and windings. Check motor bearings and note abnormalities. Clean fan wheels and exhaust screens.

HVAC Package Unit
Inspect coil condition. Inspect controls. Inspect and calibrate safeties. Inspect expansion valves and record superheat. Inspect crank heater. Inspect evaporator temperature differential. Inspect and clean condensate drains and pans. Inspect economizer operation. Inspect and adjust if needed damper linkage. Inspect motor operation. Inspect, adjust and/or change belts (if needed) Inspect drive condition. Inspect fan condition. Inspect for proper rotation. Inspect bearings. Inspect alignment. Inspect contractors and points. Inspect connections.

Direct Drives Circulating Pumps
Inspect pump head; inspect mechanical seals or stuffing box; inspect and tighten motor and pump mounting; inspect and repair piping insulation; inspect wiring and conduit; inspect general condition for rust; inspect valves; inspect and lubricate motor and pump head bearings; inspect motor pump coupling for alignment; condition and security to shaft.

Ice Machines
Check inlet water supply for worn o-ring. Check water distributor jets for blockage. Check voltage and amperage to motor. Check evaporator coil and clean as needed. Clean condenser coil. Check hot water tank and clean as needed. Check inlet valve seat clean scales as needed. Tighten all electrician connections. Tighten all bolts. Oil motors if applicable. Check capillary for cracks or worn out spots. Check cube water flow system with ice machine cleaner.

Refrigeration
Check and clean condenser coils. Check evaporator coils and clean as needed. Inspect door gaskets and heaters. Clean evaporator fans as needed. Inspect condenser and evaporator fan motors. Test all safety controls. Test for proper defrost cycle. Measure operating voltages and amperages. Measure operating temperatures. Measure compressor operating pressures, sequencing and temperatures. Check thermostatic expansion valve operation and condition. Inspect oil level at sight glass. Inspect filter drier indicator for proper conditions. Inspect evaporator and condenser coil for leaks. Inspect condensate pans and drains, remove visible dirt. Inspect electrical components, terminal connections and wiring. Test total operation.