Commercial Generator Service Agreements

Scope of work: Planned Generator Maintenance Services.

Quarterly Inspections & Tests

Cooling Air & Engine Air Intake/Exhaust

• Inspect air filter condition and air intake manifold for leaks.
• Check air restriction indicator, if applicable.
• Inspect expansion tube, exhaust muffler, and exhaust pipe for carbon monoxide leaks and corrosion. 
• Check condition and operation of rain cap. 
• Check mechanically-operated louvers for proper operation. 
• Inspect condensate trap on muffler and empty, if accessible. 
• Check alternator cooling air fan for obstructions and proper operation. 

Engine Cooling System

• Inspect radiator, cap, piping, and hoses for leaks, cracking, and corrosion.
• Tighten all hose clamps.
• Check coolant level, color, and condition. 
• Inspect water pump for leaks. 
• Inspect belts for proper tension, alignment, and excessive wear. 
• Check block heater for proper temperature operation. 

 Engine Fuel System

• Inspect and record main tank and day tank fuel levels. 
• Check all hoses, clamps, pipes, and fittings for leaks. 
• Tighten all clamps and filters. 
• Inspect governor for linkage. 
• Check tank vents and piping for obstructions. 
• Check gas lines and regulator(s) for leaks and proper venting. 

Engine Lubrication System

• Check oil level.
• Check oil filters for leaks and tightness.
• Check crankcase for proper ventilation.

Battery & Charger System 

• Inspect battery for leaks.
• Check battery terminals, cables, and starter connections for corrosion and tighten connections. 
• Check battery charger for proper operations for settings. 
• Record battery voltage and charger amp output rate, if available. 
• Check and record engine charging alternator voltage. 
• Test and record battery starting voltage and CCA. 
• Check vent cap and electrolyte level of each cell, if available. 

Generator Control & Power Systems

• Operate output breaker(s) and test the trip function if a test button is available. 
• Inspect all engine transducers, senders, and devices for mechanical damage and electrical insulation. 
• Inspect generator controller, wiring, and enclosure. 
• Check controller heater operation if present. 

Generator System Operations

• Manually run generator to nominal operating temperature; record engine and generator readings. 
• Run engine and ensure proper operations of cooling fan, belts, and mechanical louvers. 

Annual Generator Services:

Engine Maintenance Services

• Drain and replace engine lubrication oil. 
• Replace primary and secondary lubrication filters. 
• Replace fuel filter(s). 
• Replace coolant filters if present. 
• Drain condensate from fuel/water separators. 
• Use Accustrip CTS-4 to test coolant properties and record Supplemental Coolant Additives (SCA) levels.

Operator Safety & Housekeeping

• Check emergency shutdown(s) for proper operations. 
• Inspect fan shrouds and guards for corrosion and proper safety operations. 
• Check ingress/egress doors and lighting in generator room. 

Alternator & Power Breaker(s)

• Remove breaker enclosure covers and tighten connections. 
• Inspect conductor insulation for corrosion, overheating, and deterioration. 

Annual Testing & Certification

• Perform NFPA 110 Annual Generator—ATS System Test using Emergency Power Building Loads. 
• Provide Annual Certification for Insurance & Fire Marshall requirements.

Please note that the following only covers the contracts’ scopes of work. For full terms and conditions, contact our office.