24
Maintenance
PROBLEM POSSIBLE CAUSE SOLUTION
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.
Pump protector Check inlet water pressure.
OIL DRIPPING Oil seal worn Check and replace if necessary.
EXCESSIVE
VIBRATION IN
DELIVERY LINE
Irregular functioning of the valves Check and replace if necessary.
RELIEF VALVE
LEAKS WATER
Wrong nozzle size, debris in nozzle Clean or replace with correct nozzle.
BURNER WILL
NOT LIGHT
No fuel Open gas valve.
Pilot light is out Light pilot.
Defective high limit switch Replace switch.
BURNER SMOKES Stack restriction See venting under installation (page 7).
PILOT DOES
NOT LIGHT
Manual pilot valve closed Open pilot valve.
Gas leak in pilot Call qualified serviceman.
Piezo ignitor Adjust spark gap. Secure wires.
PILOT IGNITES BUT
WILL NOT STAY ON
WHEN GAS COCK
DIAL IS RELEASED
Pilot too far away from thermocouple Adjust thermocouple closer to flame.
Thermocouple loose at regulator safety
valve
Tighten to firm fit.
SHORT
THERMOCOUPLE
LIFE
Excessive heat from pilot light Decrease pilot supply gas.
Thermocouple too close to pilot Adjust thermocouple farther away.
BURNER CYCLING ON/
OFF
Defective high limit switch Replace switch.
WASHER WILL
NOT STEAM
Steam valve closed Open valve (counterclockwise).
Burner not on Turn burner switch to "ON" position.
Coil dirty or sooty See coil maintenance section.
Steam valve clogged Clean or replace.
Landa VHP 2-1500 / 3-2000 Operator’s Manual 8.913-949.0 - T
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