Troubleshooting
10
306817N
Troubleshooting
1.
Follow Pressure Relief Procedure, page 8, before
checking or repairing the equipment
2.
Check all possible problems and causes before
disassembling the equipment.
Problem
Cause
Solution
Excessive surge at spray nozzle
Obstructed spray tip, valve, or hose
Clean, clear
Cleaning solution supply empty
Refill
Accumulator not working
Recharge—see Service on page 11 and
manual 306933
Clogged intake filter, kinked or collapsed
suction hose
Clean, unkink
Fluid leaking from valve
Loose packing nut or worn packings
See manual 307010
Valve will not stop dispensing
Valve not adjusted properly
See manual 307010
Dirty or worn valve stem or seat
Clean, clear, or replace—See manual 307010
Valve will not stop the pump
Cleaning solution supply empty
Refill
Clogged intake filter, kinked or collapsed
suction hose
Clean, unkink
Dirty or worn valve stem or seat
Clean clear, or replace—See manual
307010
Dirty or worn fluid piston or packings
Service—See manual 308117
Pump operating, but spray
pressure low on up stroke.
Dirty or worn fluid piston or packings
Service—See manual 308117
Pump operating, but spray
pressure low on down stroke
Dirty or worn fluid intake valve
Clean, clear, or replace—See manual 308117
Pump operating, but spray
pressure low on both strokes
Clogged intake filter, kinked or collapsed
suction hose
Clean, unkink
Dirty or worn fluid piston or packings
Service—See manual 308117
Dirty or worn fluid intake valve
Clean, clear, or replace—See manual 308117
Loose packing nut or worn packings
Tighten, replace—See manual 308117
Fluid will not come from pump
(hose removed)
Restricted air line
Check for closed valve; use larger supply hose
Pump throat packing nut too tight
Loosen
Pump air motor not working
Service—See manual 306982
System will not spray
Restricted air line
Check for closed valve; use larger supply hose
Pump air motor not working
Service—See manual 306982
