

The Husky Stationary Air Compressor C603H is a reliable industrial air compressor designed for heavy-duty applications. Known for its durability and efficiency, this model provides consistent air pressure and is ideal for various pneumatic tools and equipment. Ensure optimal performance with regular maintenance and quality spare parts.
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Tensioning Guide
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Daily Electrical System Inspection
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Husky Stationary Air Compressor C603H
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Motor Pulley/Flywheel Alignment
Turn the air compressor off, lock out the power supply, and relieve all air pressure from the air tank.
Remove outer belt guard.
Place a straightedge (4) against the outside of the flywheel (1) and the motor drive pulley hub (3).
Measure the distance between the edge of the belt (2) and the straightedge at points A1 and A2.
If the difference is greater than 1/16 in. (1.6 mm), loosen the set screws holding the motor drive pulley (3) to the shaft and adjust the pulley’s position on the shaft until the A1 and A2 measurements are within 1/16 in. (1.6 mm) of each other.
Tighten the motor drive pulley set screws. Torque to 115-125 in-lbs (13.0-14.1 Nm)
Visually inspect the motor drive pulley to verify that it is perpendicular to the drive motor shaft. The points (B1 and B2) should appear to be equal. If they are not, loosen the set screws of the motor drive pulley and equalize B1 and B2, using care not to disturb the belt alignment performed previously.
Retighten the motor drive pulley set screws. Torque to 115-125 in-lbs (13.0-14.1 Nm).
Reinstall the outer belt guard.
Stationary Air Compressor Care And Cleaning
Drain the air tank of moisture after operation
Store the compressor in a cool, dry place when not in use
Disconnect the air hose and hang open ends down to allow any moisture to drain
Protect the electrical cord and air hose from damage (such as being stepped on or run over)
Sign off on the care and cleaning of the stationary air compressor
Air Lines And Fittings Inspection
NOTICE: Even minor leaks can cause the air compressor to overwork, resulting in premature breakdown or inadequate performance.
Turn the air compressor on and allow tank pressure to build. Motor will stop when tank pressure reaches “cut-out” pressure.
Turn the air compressor Off and unplug unit.
Apply a soap solution to all air-line fittings and connections/piping to look for any leaks.
Pull ring on safety valve allowing air to bleed from the tank until tank pressure is approximately 20 PSI. Release safety valve ring.
Drain water from air tank by opening drain valve on bottom of tank.
Correct any leaks found.
Sign off on the air lines and fittings inspection
Oil Replacement
Remove the oil fill plug (1)
Remove the oil drain plug (2) and drain the oil into a suitable container
Replace the oil drain plug (2) and tighten securely
Slowly add the compressor oil until it reaches the middle of the sight glass (3)
NOTE: Crankcase oil capacity is approximately 16 fluid ounces (473 ml)
NOTE: When filling the crankcase, the oil flows very slowly into the pump. If the oil is added too quickly, it will overflow and appear to be full
Replace the oil fill plug (1) and tighten securely
Sign off on the oil replacement
1 Yearly Stationary Air Compressor Maintenance
Warning: Always release all pressure, disconnect from power supply, and allow unit to cool to the touch before cleaning or making repairs on the air compressor.
Warning: Do not at any time let brake fluids, gasoline, petroleum-based products, penetrating oils, etc., come in contact with plastic parts. Chemicals can damage, weaken or destroy plastic which may result in serious personal injury.
Warning: When servicing, use only identical Husky replacement parts. Use of any other parts may create a hazard or cause product damage.
Inspect the tank annually for rust, pin holes, or other imperfections that could cause it to become unsafe.
Use clean cloths to remove dirt, dust, oil, grease, etc.
Condensate forms in the tank when there is humidity in the air. Depending on the environmental conditions, drain the condensate daily and/or every hour.
The safety valve automatically releases air when the receiver pressure exceeds the preset maximum.
Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use.
Notes on the condition of the air compressor
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Belt Poly-V 6 Rib-Belt Tension ~160Hz
E110538
Warning Label Hot Surface (Not Shown)
E106012
Warning Label (Not Shown)
E106011
Screw M8 X 1.25 X 60 mm Hex Flange Head, Kit of 2 - Torque 15-20 ft-lbs
E110560
Kit Pulley 6.923" OD X 5/8" Bore Includes Items 5 & 9
E110537
Belt Poly-V 6 Rib-Belt Tension ~160Hz
E110538
Warning Label Hot Surface (Not Shown)
E106012
Warning Label (Not Shown)
E106011
Screw M8 X 1.25 X 60 mm Hex Flange Head, Kit of 2 - Torque 15-20 ft-lbs
E110560
Kit Pulley 6.923" OD X 5/8" Bore Includes Items 5 & 9
E110537
Belt Poly-V 6 Rib-Belt Tension ~160Hz
E110538
Warning Label Hot Surface (Not Shown)
E106012
Warning Label (Not Shown)
E106011
Screw M8 X 1.25 X 60 mm Hex Flange Head, Kit of 2 - Torque 15-20 ft-lbs
E110560
Kit Pulley 6.923" OD X 5/8" Bore Includes Items 5 & 9
E110537
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