DeVillbiss Air Power Company MGP-SL10120H-2A - Manual (Page 16)

16—ENG
MGP-SL10120H-2A
Adjusting Belt Tension
Adjust belt tension as described below.
For compressors with a motor slide mount, adjust belt
tension as follows:
1. Slide motor away from compressor until desired
tension is obtained.
On two stage compressors, the belt should deflect
1/2" at midway between the pulley and the flywheel.
2. Tighten two outside cap screws enough to hold the
motor in place for checking pulley and flywheel
alignment.
3. Tighten all four mounting screws to 20-25 ft.-lbs.
SERVICE INSTRUCTIONS
6. Check that the valve disc moves freely and that the
spring holds the disc in the upper, closed position.
The check valve may be cleaned with a solvent.
7. Apply sealant to the check valve threads. Reinstall
the check valve. Do not overtighten.
8. Replace the outlet tube and tighten top and bottom
nuts. Do not overtighten.
9. Replace the pressure release tube and tighten nuts.
Do not overtighten.
Safety Valve - Inspection and
Replacement
IF THE SAFETY VALVE DOES NOT WORK
PROPERLY, OVER-PRESSURIZATION MAY
OCCUR, CAUSING AIR TANK RUPTURE OR
EXPLOSION. OCCASIONALLY PULL THE
RING ON THE SAFETY VALVE TO MAKE
SURE THAT THE SAFETY VALVE OPER-
ATES FREELY. IF THE VALVE IS STUCK OR
DOES NOT OPERATE SMOOTHLY, IT MUST
BE REPLACED WITH A VALVE HAVING THE
SAME PRESSURE RATING.
The safety valve is set at the factory to a pressure
approximately 15 pounds higher than the rated pressure
of the outfit. If the pressure switch malfunctions and does
not shut off the motor automatically at maximum tank
pressure, the safety valve will protect the air tank against
excessive air pressure by popping off at its preset
pressure.
SERIOUS INJURY OR DAMAGE MAY OCCUR
IF PARTS OF THE BODY OR LOOSE ITEMS
GET CAUGHT IN MOVING PARTS. NEVER
OPERATE THE OUTFIT WITH THE BELT
GUARD REMOVED. THE BELT GUARD
SHOULD BE REMOVED ONLY WHEN THE
COMPRESSOR POWER IS DISCONNECTED.