Landa PDHW5-35624E, Operator'S Manual

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20
Maintenance
PROBLEM POSSIBLE CAUSE SOLUTION
LOW WATER
TEMPERATURE Improper fuel or water in fuel Replace with clean and proper fuel.
Low fuel pressure Increase fuel pressure.
Weak fuel pump
Check fuel pump pressure. Replace pump
if needed.
Fuel filter partially clogged Replace as needed.
Soot build-up on coils not
allowing heat transfer
Clean coils.
Improper burner nozzle Contact your local Landa Dealer.
WATER
TEMPERATURE
TOO HOT Incoming water to machine warm
or hot
Lower incoming water temperature.
Fuel pump pressure too high See specifications for proper fuel pressure.
Fuel pump defective Replace fuel pump.
Detergent line sucking air
Tighten all clamps. Check detergent lines
for holes
Defective temperature switch Replace.
Incorrect fuel nozzle size Contact your local Landa Dealer.
Insufficient water supplied Check water G.P.M. to machine.
Restricted water flow Check nozzle for obstruction, proper size.
PUMP NOISY Air in suction line Check water supply and connections on suction line.
Broken or weak inlet or
discharge valve springs
Check and replace if necessary.
Excessive matter in valves Check and clean if necessary.
Worn bearings Check and replace if necessary.
PRESENCE OF
WATER IN OIL Oil seal worn Check and replace if necessary.
High humidity in air Check and change oil twice as often.
WATER DRIPPING
FROM UNDER
PUMP Piston packing worn Check and replace if necessary.
O-Ring plunger retainer worn Check and replace if necessary.
Cracked piston Check and replace if necessary.
Pump protector
Lower water supply pressure. Do not run with spray
gun closed longer than 2 minutes.
Landa PDHW Series Operator’s Manual 8.919-980.0 - B