NOTE
The belt should be centered over the grooves on the flywheel and motor pulley.
6.Push the motor back into regular position and tighten bolts securely. Proper tension is approxi- mately 1/4" belt deflection measured midway be- tween the pulley and flywheel when a 3 pound weight or equivalent finger pressure is applied at this point. A loose belt will squeal at compressor
7.Replace beltguardand screws.
Pulley and Flywheel - Alignment
The compressor flywheel and motor pulley must be inline (in the same plane) within 1/16" to assure belt retention within sheave grooves. The motor mounting holes on the saddle are skewed to square the motor with the compressor mounting hole as the belt is tensioned. To check alignment, disconnect electrical power and remove the belt guard. Place a straightedge against the outside of the flywheel and measure the distance from it to the nearest groove. Alignment is achieved when the
other end of the straightedge is within 1/16" of the measured dimension at the pulley grooves. Squareness is achieved when the pulley grooves are an equal
distance from the straightedge on both sides of the motor shaft.
TROUBLESHOOTING GUIDE
UNIT CYCLES AUTOMATICALLY WHEN POWER IS ()N. WHEN DOING MAINTENANCE, YOU MAY BE EXPOSED TO VOLTAGE SOURCES, COM PRESSED AIR OR MOVING PARTS. PERSONAL INJURIES CAN OCCUR. BEFORE PERFORMING MAINTENANCE OR REPAIR, TURN OFF AND LOCK OUT ELECTRIC POWER AND BLEED OFF AIR TAN K PRESSURE. N EVER OPERATE TH ECOMPRESSOR WITH THE BELT GUARD REMOVED.
PROBLEM
Air leaks at fittings or hose.
Air leaks at check valve.
CAUSE
Pressure switch does not shut off motor when compressor reaches
Tube or hose fittings are not tight enough.
Defective or dirty check valve.
CORRECTION
Pressureswitchmustbereplaced.
Tighten fittings where air can be heard escaping. Check fittings under soapy water solution. DO NOT
Removeand clean or replace check valve. DO NOT OVER-TIGHTEN.
Air leaks at pressure switch re- | Defective | pressure switch release valve. |
leasevelve. |
|
|
Air leaks at air tank welds. | Defective | air tank. |
Air leak from safety valve. | Possible defect in safety valve. |
Remove and replace the release valve.
Air tank must be replaced.
DO NOT DRILL INTO, WELD OR OTHER- WISE MODIFY AIR TANK. IT WILL BE WEAKENED.
Operate safety valve manually be pulling on dng. If valve still leaks, it should be replaced.
Restricted check valve. *
Loose pulley.
Low oil level.
Loose flywheel.
Loose compressor bolts.
Loose belt.
:Remove and clean or replace. Tighten pulley set screw.
Maintain prescribed oil level
Tighten screw.
Check bolts. Tighten as required.
Tighten belt as per instructions under Belt Replace- merit above.
Carbon | Remove the head and valve plate. Clean the velve |
| plate and thetop of the piston. (Be sure carbon does |
| not fall intothe cylinder.) Reassemble to |
| using new gasket and torque screws. |
10- Eng
