Prochem LEGEND GT, Operating Instructions Manual

Page: 50 / 137

48
Maintenance
PROBLEM CAUSE SOLUTION
Chemical flow
meter indicates
flow with the tool
valve closed
External leak in chemical piping
Tighten fittings. Re-apply thread sealant where
required. If any fittings are damaged, replace.
Outlet check valve is full of debris or
damaged, not allowing it to close properly
Close the chemical valve on the instrument panel.
If the flow meter does not indicate flow, remove
debris or replace check valve, if necessary.
Chemical pump diaphragm is ruptured
Close the chemical valve on the instrument panel.
If the flow meter still indicates flow, replace the
chemical pump diaphragm and plastic disk.
Internal leak in chemical valve causing
continual flow through prime tube returning
to container. Tighten valve packing nut (see “General Service
Adjustments” section in this manual). Replace
valve, if necessary.
Solution pump
does not engage
Solution pump circuit breaker has been
tripped
Check the solution pump circuit breaker on the
control panel. Press the circuit breaker reset
button.
Defective electrical connection in the
console wiring or defective switch.
Examine switch, electrical connections, and
wiring. Repair any defective connections. If there
is power going to the switch but not going out,
replace the defective switch.
Solution pump has not been activated Turn solution pump switch to on.
Defective solution pump clutch.
NOTE: The clutch may be manually
engaged by inserting two 1/4-20 x 1/2
bolts. Line up the holes on the clutch
and insert the bolts. To disengage the
pump, remove the bolts.
If there is power in the switch, but not power at the
clutch, replace the defective wire. If there is power
at the clutch, replace the defective switch.
Loose or broken solution pump belt. Tighten or replace belt.
Engine will not
start
The engine does
not turn over
Main circuit breaker on the control panel
has been tripped. After inspecting the unit to determine the cause of
the tripped circuit breaker, press the reset button.
Loose or corroded battery. Clean, tighten, or replace the battery terminals.
Dead battery. Recharge or replace battery.
Defective ignition switch.
Test ignition switch for power going into the switch.
If there is power going in but NO power going out,
replace the switch.
Defective starter motor. Test the starter motor. If necessary replace.
Vacuum pump seized.
Refer to vacuum pump manufacturer’s service &
repair manual.
Starter turns over
engine, but will not
start
Waste tank is full. Empty the waste tank.
Defective fuel pump. Replace the fuel pump.
Loose or broken wires leading to waste
tank float switch. Repair or replace any broken electrical connec-
tions.
Defective float switch in the waste tank.
Check switch for proper operation, replace as
necessary.
Internal engine problem.
Consult the engine manufacturer’s service and
repair manual or contact engine manufacturer’s
authorized repair center.
86313050 LEGEND GT