Prochem Everest 408-650, LP-HP - Manual (Page 52)

50
Maintenance
Troubleshooting
Problem Cause Solution
Loss of solution
pump pressure.
With the cleaning
tool open, the
solution pressure
gauge reads below
the normal
operating pressure.
Water supply is turned off or the float valve
is stuck or improperly adjusted.
Turn the water supply on or up. Check for
kinks in the water supply hose. Examine the
float valve and adjust or replace.
solution pump inlet supply line is plugged or
drawing air.
Examine the water inlet strainer inside the
water box. Remove accumulated debris
and replace if required. Check for suction
leaks and loose clamps or fittings. Tighten
any loose fittings or clamps. Replace any
ruptured hose(s).
Improper engine speed.
Using a tachometer, check the engine
speed. Full throttle engine speed is 2200
RPM. Idle engine speed is 900 RPM.
Pressure regulator o-rings are dry. Lubricate o-rings, using o-ring lubricant
Pressure regulator has worn o-rings Check o-rings. If necessary, replace.
Pressure regulator is dirty, stuck open, or
improperly adjusted.
Clean or repair regulator. Adjust to working
pressure. Lubricate o-rings, using o-ring
lubricant
Low pump volume. (Measure the amount of
water being returned to the water box from
the pressure regulator. It should fill a gallon
container about every 17 seconds) at high
speed.
Examine the check valves, plunger cups,
and cylinder head on the solution pump.
Repair, whenever required (refer to the
solution pump service manual).
Defective solution pressure gauge. Replace gauge.
Orifice (spray nozzle) in the cleaning tool is
worn, defective, or wrong size.
Replace Nozzle or change nozzle size.
Debris clogging water lines or water inlet
disconnect.
Clean or replace as needed.
Belts loose or broken Re-tension or replace as needed.
Loss of pump prime Manually prime solution pump
Loss of solution
volume at cleaning
tool orifice.
solution gauge
reads normal.
Plugged orifice and/or screen in the cleaning
tool.
Unplug or replace orifice and/or screen
Internal block between the pressure
regulator manifold and the solution manifold,
or the solution screen is clogged.
Inspect all lines, remove accumulated debris
which is blocking proper flow. Replace any
defective hoses. Remove, inspect, and
clean the solution screen. De-scale unit and
install a water softener, if necessary.
Outlet check valve is plugged.
Examine the check valve, remove any
debris
Defective quick-connect on one or more of
the high-pressure hoses. Replace defective quick-connect(s) on high
pressure hose(s).
Cleaning tool valve is malfunctioning. Repair or replace valve.
Hose inner lining is constricted. Remove restriction or replace hose.
86352170 EVEREST