AIRLESSCO SS4550 - Manual (Page 17)

14 15
REGULAR MAINTENANCE
1. Always stop the pump at the bottom of its stroke when you take a break or at the end of the day. This helps keep
material from drying on the rod, damaging
the packings.
2. Keep the displacement pump packing nut/wet cup 1/3 full of Airlessco Throat Seal Oil at all times. The TSO helps
protect the packings and rod.
3. Lubricate Connecting Rod Pin every 3 months.
4. Inspect the packing nut daily. Your paint pump has Airlessco's patented "Triple Life Packing System". Packing life will
be extended a minimum of 3 times if the proper packing tightening procedure is followed!
PACKING TIGHTENING PROCEDURE:
Inspect the packing nut daily!If seepage of paint into the packing nut and/ or movement of the piston upward is
found (while not spraying), the packing nut should be tightened enough to stop leakage only, but not any tighter.
OVERTIGHTENING WILL DAMAGE THE PACKINGS and reduce the packing life to the life of other piston pumps.
PROBLEM CAUSE SOLUTION
There is spitting from
the gun.
The fluid supply is low or empty.
Air entrapped in the fluid pump or
hose.
Refill the supply container.
Check for loose connections on the
siphon assembly, tighten, then reprime pump.
Paint leaks into the
wet cup
The packing nut/wet cup is loose.
The upper packings are worn
or damaged.
Worn Piston Rod.
Tighten just enough to stop leakage.
Replace the packings. See pages 18-19.
Replace Piston Rod
The engine operates, but
the paint pump doesn't
cycle.
The pressure setting is too low.
The clutch is not engaged.
The displacement pump is seized.
Increase the pressure. See page 6.
See Troubleshooting pg. 23.
Service the pump. See page 18-19.
The engine and displace-
ment pump operates, but
paint pressure is too low
or none
The pressure setting is too low.
The tip or gun filter is clogged.
The tip is worn.
The fluid displacement pump filter is
clogged.
There is a large pressure drop
in the fluid hose.
Increase the pressure, see page 6.
Remove the tip and/or filter and clean them.
Replace Tip.
Clean the filter.
Use a larger diameter hose.
The displacement pump
operates, but the
output is too low on
the downstroke or both
strokes.
The inlet valve ball is not seating
properly.
Service the inlet valve see page 17.
The displacement pump
operates, but the output
is too low on the
upstroke.
The outlet valve ball is not seating
properly.
The lower packings are worn or
damaged.
Service the outlet valve per
page 17.
Replace the packings. See page 18-19.
Clutch does not engage.
Clutch slippage.
Engine stops
See Troubleshooting page 23.
Call Authorized Service Center.
Refer to Engine Manual.
FIELD TROUBLESHOOTING