Product Manual

3
2 HP - 5 HP Scroll Enclosure Air Compressors
Operation
BEFORE START UP
1. Make sure all safety warnings, labels and instructions have
been read and understood before continuing.
2. Remove any shipping materials, brackets, etc.
3. Confi rm that the electric power source and ground have
been fi rmly connected.
4. Check the belts for tightness.
5. Be sure all pressure connections are tight.
6. Check to be certain all safety relief valves, etc., are
correctly installed.
7. Securely mount all panels and guards.
8. Check that all fuses, circuit breakers, etc., are the proper
size.
9. Make sure the inlet fi lter is properly installed.
10. Confi rm that the drain valve is closed.
START-UP AND OPERATION
1. Visually check the rotation of the compressor pump.
The rotation should be counterclockwise if viewing the
compressor from the belt side. If the rotation is incorrect,
have a qualifi ed electrician correct the supply wiring.
2. Follow all the procedures under “Before start-up” before
attempting operation of the compressor.
3. Make sure compressor switch is in the OFF position.
4. Switch the electric source breaker on.
5. Open the 3/8 inch discharge valve completely.
6. Turn compressor switch to ON position and check that the
compressor operates without excessive vibration, unusual
noises or leaks.
7. Close the discharge valve completely.
8. If the pressure does not rise on a three phase unit, turn
the unit off. Have a qualifi ed electrician switch the
breaker OFF and exchange the L1 and L2 connections
(two out of three phases of electric source) on the control
panel.
9. Check the discharge pressure. Also make sure the air
pressure rises to the designated pressure setting by
checking the discharge pressure gauge.
10. Check the operation of the pressure switch by opening
the outlet valve and confi rming the compressor starts at
approximately 95 psig for low pressure units and 115 psig
or high pressure units.
DAILY OPERATION
1. Stop the compressor by turning switch to the OFF
position.
NOTE: If the compressor rotates in reverse for more than fi ve
seconds, the check valve needs to be cleaned or replaced.
2. Switch the breaker OFF if the compressor is not to be used
for a long period of time.
STOPPING THE COMPRESSOR DURING
NORMAL OPERATION
1. Close the discharge valve.
2. Allow the air pressure to build and the compressor to
stop.
3. Turn the compressor off by turning switch to the OFF
position.
BELT ADJUSTMENT PROCEDURE
1. Remove the top panel by removing the two slotted 1/4-20
screws on the rear of the enclosure.
2. Loosen the four (4) motor slide bolts.
3. Tighten belt by adjusting the belt adjustment bolt. Belt
tension for new belts should be 57 to 65 lbs for the
loosest belt in the set, then 45-50 lbs after run-in. If the
belt tension falls below 25 lbs or chirping is heard as start
up, re-tension belts. (If using the defl ection method for
belt tension, 3.8-4.3 lbs force at mid span should give 7/32
inch belt defl ection for a new belt, 3.0-3.38 for a used belt
for 7/32 inch belt defl ection.
4. Tighten the four (4) motor slide bolts. Tighten the two
electrical panel side slide bolts fi rst then tighten the two
pulley side slide bolts.
Figure 1