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30
Maintenance
Troubleshooting
PROBLEM
POSSIBLE CAUSE
SOLUTION
LOW OPERATING
PRESSURE
Faulty pressure gauge
Install new gauge.
Insufficient water supply
Use larger garden hose; clean filter
washer at water inlet.
Old, worn or incorrect spray nozzle
Match nozzle number to machine and/or replace
with new nozzle.
Belt slippage
Tighten or replace; use correct belt.
Plumbing or hose leak
Check plumbing.
Faulty or misadjusted unloader valve
(where applicable)
Adjust unloader for proper pressure.
Install repair kit when needed.
Worn packing in pump
Install new packing kit.
Fouled or dirty inlet or discharge
valves in pump
Clean inlet and discharge valves.
Worn inlet or discharge valves
Replace with valve kit.
Obstruction in spray nozzle
Remove obstruction.
Leaking pressure control valve (where
applicable)
Rebuild or replace as needed.
Detergent metering valve left open
sucking air, or faulty metering valve
Close and/or replace metering valve.
Slow motor RPM
Check incoming voltage.
LOW WATER
TEMPERATURE
Improper size of gas lines
See pages 7-8 for sizing of gas lines.
Low gas pressure
Increase gas pressure to machine.
Improper pressure regulator
Specify BTU, building gas pressure and 11 w.c.i. to
machine for correct sizing of regulator.
Low gas valve pressure
Increase gas pressure as described in Gas Valve
Regulator Adjustment section.
Soot buildup on coils not allowing heat
transfer
Clean coils.
Improper burner nozzle
See exploded view parts list.
Landa VNG Operator’s Manual 8.913-939.0 - AB
Содержание Landa VLP Series
Страница 2: ...2 Landa VNG Operator s Manual 8 913 939 0 AB Machine Data Label...
Страница 34: ...34 Notes Landa VNG Operator s Manual 8 913 939 0 AB...
Страница 64: ...64 Hose Spray Gun Landa VNG Operator s Manual 8 913 939 0 AB 1 2 4 5 6 3 Pressure Nozzle...
Страница 82: ...8 913 939 0 Printed in U S A...