Instruction manual

14
15
PROBLEM CAUSE SOLUTION
Unit doesn’t prime Airleak due to:
•Loose suction nut
• Worn o-rings
Stuck or fouled balls
Prime/Pressure Relief valve
not opening
• tighten suction nut
• replace o-ring (106-018) on suction seat & o-ring (106-017)
below suction seat
• service inlet and outlet valves
• clean or replace Prime Valve (100-180)
Unit primes but has poor
or no pressure
Pressure set too low
Filter(s) are clogged
Outlet valve fouled/worn
Prime/pressure relief valve
bypassing
Packings and/or piston worn
• turn up pressure
• clean or replace gun lter, inlet lter, and/or manifold lter
• service outlet valve
• clean or replace prime valve (100-180)
• tighten packing nut
• repack unit
Unit does not maintain
good spraying pressure
Blown spray tip
Packings and/or pistons worn
Upper seat worn
• replace spray tip
• repack unit
• replace upper seat
Unit does not run. • see electrical troubleshooting
FIELD TROUBLESHOOTING
FIG. 13
NOTE: The Cog Belt System does not require alignment.
When upper sheave is placed on motor shaft it is pushed
on until a positive stop is reached. The set screws (Fig.
26, Item 50) are then loctited. The lower pulley is placed
on gearbox and held in place with keyway and snap ring
(Fig. 26, Item 23) The ange on upper sheave holds the
belt in alignment and the belt self aligns on lower pulley
eliminating having to align.
1. Remove cover (Fig. 26, Item 42) from unit.
2. Remove Tensioner Assembly (Fig 26). Then loosen screws (Fig. 26, Item 53). Move gearbox forward to allow removal
and replacement of belt.
3. Retighten screws into gearbox until they bottom out. (Fig. 26, Item 53) This will align gearbox correctly.
4. Replace tensioner with bolts and leave loose to allow adjusting belt tension.
5. Tighten belt as shown in Figure 13. When properly tightened the deection play should be 1/4 inch when pushing hard
with thumb. (20 ft/lbs)
NOTE: WHEN PLACING BELT ON PULLEYS AND INSERTING THE TENSIONER AGAINST BELT, ENSURE COGS
ON BELT ARE ENGAGED INTO COGS ON PULLEYS BEFORE TIGHTENING BELTS. ROTATING UPPER PULLEY
WHILE HOLDING THE TENSIONER AGAINST THE BELT WILL ALLOW PROPER ENGAGEMENT OF COGS PRIOR
TO TIGHTENING.
REPLACEMENT OF BELT/BELT ADJUSTMENT
REPLACEMENT OF BELT