JETStream 3000 series - Troubleshooting

Bareshaft Pump
69
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REMEDY
High discharge
pressure
Nozzle too small Replace nozzle
Restriction in hose or lance Test hose/lance without nozzle
Inaccurate pressure gauge Replace gauge
Low discharge
pressure
Nozzle too large Replace nozzle
Nozzle worn Replace nozzle
Insufcient water tank level Fill tank, unplug vent
Inaccurate pressure gauge Replace gauge
Belts slipping Increase belt tension
Leaking or sticking pump valves Service or replace valves
Worn pump plunger packing Replace packing
Leaking control gun, hose, tting Repair or replace
Dirty lter bag Replace lter bag
Excessive pulsa-
tion in pump dis-
charge
Low water tank level Fill tank, unplug vent
Leaking pump valves Repair or replace valves
Broken pump valve springs Replace springs
Worn pump plunger packing Replace packing
Belts slipping Increase belt tension
Dirty lter bag Replace lter bag
Vibration in unit Pump pulsating excessively See Excessive pulsation above
High pump packing
gland temperature
Insufcient packing lube water ow
Increase lube hose pressure
Clean guide bushing holes
Water too hot 125°F max
Pump noise
Low lubricant level Fill with lubricant
Pump cavitation
See “Excessive pulsation in pump
discharge” above
Loose plunger clamps Tighten plunger clamps
Worn bearings Replace bearings
Worn crosshead(s)
Replace crosshead(s)/repair
crosshead
Excessive crankshaft end play Adjust endplay
Leakage from
pump manifold
leakage holes
Damaged valve seal Replace seal
Leakage from
hydraulic throttle
control
Damaged piston seal Replace seal