35
PROBLEM POSSIBLE CAUSE SOLUTION
OIL DRIPPING Oil seal worn Check and replace if necessary.
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 new nozzle.
Belt Slippage Tighten or replace. Use correct belt.
Plumbing or hose leak
Check plumbing system for leaks.
Re-tape leaks with teflon tape.
Faulty or mis-adjusted 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 valve.
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 sizing gas lines.
Low gas pressure Increase gas pressure to machine.
Improper pressure regulator
Specify BTU, building gas pressure 11 w.c.i.
to machine for correct sizing of regulator.
Low gas pressure Increase gas pressure
Soot buildup on coils not allowing heat
transfer
Clean coils.
Improper burner nozzle See serial plate.
Landa VHG Operator’s Manual 8.913-952.0 - BR
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