Prochem Blazer GT Manuale Utente Scaricare il pdf (Pagina 49)

47

Maintenance

PROBLEM CAUSE SOLUTION

Loss of vacuum

While cleaning, the vacuum is

not up to specification. Engine

RPM is normal.

Vacuum gauge is giving an improper

reading.

Examine the tubing between the vacuum

relief valve and the vacuum gauge and

remove any blockage.

Vacuum hose(s) is damaged,

causing a suction leak.

Inspect hose(s), repair or replace.

Waste tank gaskets not sealing

properly, not positioned properly

Inspect the gaskets. Repair or replace

gaskets as necessary. Re-position lid, inlet

and outlet.

Plugged vacuum hose or vacuum

plumbing between vacuum inlet and

strainer basket.

Unplug vacuum hose or inlet plumbing.

Waste tank filter or strainer basket is

plugged.

Clean or replace filter. Clean strainer

basket.

Loose vacuum pump drive belts. Tighten the drive belts

Waste tank drain valve is damaged

or left open, causing a vacuum leak.

Close drain valve, if open. Remove the

drain valve and, after inspecting, replace

the defective components.

Vacuum relief valve requires adjust-

ment or has a vacuum leak due to

damaged diaphragm.

Re-adjust the vacuum relief valve. If the

vacuum does not increase, remove and

inspect the relief valve diaphragm. If

damaged, replace

Vacuum exhaust heat exchangers

are plugged with lint.

Remove and clean.

Vacuum pump is worn out. Replace the vacuum pump.

Excessive Vacuum

Improper throttle adjustment.

Adjust throttle to set desired vacuum

pressure.

Vacuum obstruction Inspect hoses for obstructions.

Vacuum relief valve requires adjust-

ment.

Readjust the vacuum relief valve.

Loss of chemical

With the cleaning tool valve

open, no chemical

Chemical pump is improperly primed.

Refer to chemical pump priming instruc-

tions.

The strainer at the inlet end of the

chemical inlet tube is clogged

Unclog the strainer. If damaged, replace.

Suction leak in the inlet tube leading

into the chemical pump.

Inspect inlet tubes and flow meter for air

leaks or damage and replace, if required.

Chemical pump check valve(s) is

clogged

Remove any debris from the chemical

check valve(s). Replace chemical check

valve(s) or seals, if necessary.

Chemical prime/on-off valve or

chemical metering valve is defective.

Replace valve(s).

Chemical pump diaphragm is

ruptured.

Disassemble the chemical pump and

replace the damaged diaphragm and

plastic disk.

Defective cylinder in the solution

pump.

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.

86317260 BLAZER GT

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