Prochem Apex GTX - Manual (Page 54)

52
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 -
Gas
Using a tachometer, check the engine speed. Full
throttle engine speed is 2740 RPM. Idle engine
speed is 850 RPM. Refer to the "engine Speed"
section for instructions on how to re-adjust.
Improper engine speed -
Diesel
Using a tachometer, check the engine speed. Full
throttle engine speed is 2650 RPM. Idle engine
speed is 1300 RPM. Refer to the "engine Speed"
section for instructions on how to re-adjust.
Pressure regulator o-rings are dry.
Lubricate o-rings, using o-ring lubricant Part
#86265430.
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).
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 solution pressure hoses. Replace defective quick-connect(s) on solution
pressure hose(s).
Cleaning tool valve is malfunctioning. Repair or replace valve.
Hose inner lining is constricted. Remove restriction or replace hose.
86341750 APEX GTX