Kärcher PROCHEM Peak GTX2 Operating Instructions Manual page 52

Maintenance
PROBLEM
Vacuum obstruction
Vacuum gauge is giving an improper
reading.
Vacuum hose(s) is damaged, causing a
suction leak.
Waste tank gaskets not sealing properly,
not positioned properly
Plugged vacuum hose or vacuum plumbing
Loss of vacuum
between vacuum inlet and strainer basket.
While cleaning,
Waste tank filter or strainer basket is
the vacuum is
plugged.
not up to specifi-
Loose vacuum pump drive belts.
cation. Engine
RPM is normal.
Waste tank drain valve is damaged or left
open, causing a vacuum leak.
Vacuum relief valve requires adjustment or
has a vacuum leak due to damaged
diaphragm.
Vacuum exhaust heat exchangers are
plugged with lint.
Vacuum pump is worn out.
Improper throttle adjustment.
Excessive
Vacuum
Vacuum relief valve requires adjustment.
Chemical pump is improperly primed.
Air leak in chemical supply tube, priming
valve or metering valve.
The strainer at the inlet end of the chemical
inlet tube is clogged
Suction leak in the inlet tube leading into
the chemical pump.
Loss of
chemical with
the cleaning tool
Chemical pump check valve(s) is clogged
valve open, no
chemical
Chemical prime/on-off valve or chemical
metering valve is defective.
Chemical pump diaphragm is ruptured.
Defective cylinder in the solution pump.
50
CAUSE
86411120 Manual Operators - Peak GTX2 Prochem
SOLUTION
Inspect hoses for obstructions.
Examine the tubing between the vacuum relief valve
and the vacuum gauge and remove any blockage.
Inspect hose(s), repair or replace.
Inspect the gaskets. Repair or replace as necessary.
Re-position lid, inlet and outlet.
Unplug vacuum hose or inlet plumbing.
Clean or replace filter. Clean strainer basket.
Tighten the drive belts
Close drain valve, if open. Remove the drain valve
and, after inspecting, replace the defective compo-
nents.
Re-adjust the vacuum relief valve. If the vacuum
does not increase, remove and inspect the relief
valve diaphragm. If damaged, replace
Remove and clean.
Replace the vacuum pump.
Adjust throttle to set desired vacuum pressure.
Readjust the vacuum relief valve.
Refer to chemical pump priming instructions.
Check for air leaks. Replace faulty parts.
Unclog the strainer. If damaged, replace.
Inspect inlet tube and flow meter for air leaks or
damage and replace, if required.
Remove any debris from the chemical check
valve(s). Replace chemical check valve(s) or seals,
if necessary.
Replace valve(s).
Disassemble the chemical pump and replace the
damaged diaphragm and plastic disk.
Measure the pump volume. If the pump volume is
less than normal, refer to "Loss of Pump Volume" in
the Troubleshooting section in this manual.