MALTEC ML2.240, Operating Manual

Page: 21 / 24

Possible problem and solution:
Symptom Possible cause(s) Corrective Action(s)
No detergent suction
- units with tanks
1. Lance nozzle is not in low pressure
2. High pressure extension hose or
high pressure too long
3. Injector clogged on pump
1. Slide lance nozzle into low
pressure position (see page13)
2. Remove high pressure extension
hose or use high pressure hose is
shorter than 25 feet.
3. Call the dealer
No detergent Suction –
units with attachable
applicators
Detergent applicator is clogged 1. Clean applicator with warm water.
2. Replace applicator.
Unit begins to smoke Overheated, overloaded or damaged
motor
Turn off unit and call the dealer
Pressure washer does
not start up
1. Unit is pressurized
2. Plug is not well connected
3. Extension cord is too long or wire
size too small
4. Main voltage supply is too low
5. Thermal safety switch has tripped
1. Squeeze trigger on gun
2. Check plug, socket and fuse
3. Remove extension cord
4. Check that main supply voltage
age is adequate
5. Switch off unit and allow motor to
cool down
Pump does not reach
necessary pressure
1. Water inlet filter is clogged
2. Pump is sucking air from hose
connections
3. Nozzle is worn or not correct size
4. Unloader is clogged or Worn
5. Valves is clogged or worn
1. Clean water inlet filter
2. Check that connections and locking
ring are properly tightened
3. Call the dealer
4. Call the dealer
5. Call the dealer
Fluctuating Pressure 1. Pumpis sucking in air
2. Clogged nozzle
3. Valves dirty, worn of stuck
4. Water seals worn
1. Check that hoses and connections
are tight
2. Clean with tip cleaner
3. Call the dealer
4. Call the dealer
Motor stops suddenly 1. Extension cord is too long or wire
size too small
2. Thermal safety switch has tripped
due to overheating
1. Remove extension cord
2. Check that main supply voltage
age corresponds to specifications
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