Homa AM***-C, Instruction Manual

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54 | EngliSH
The machine will not start
Cause
Remedy
Electricity supply interrupted – short circuit or earth
connection in the cable or motor windings Have the motor and wires checked by a specialist and replaced if necessary
Fuses, the motor protection switch and/or monitoring
devices are triggered Have a specialist inspect the connection and correct them as necessary
Have the motor protection switch adjusted according to the technical specifications,
and reset monitoring equipment.
Check that the impeller/propeller runs smoothly. Clean it or free it as necessary
The moisture sensors (option) has interrupted the power
circuit (operator-related) See fault: Mechanical shaft seal leaks, sealing chamber monitor reports fault and
switches the machine off
Machine runs but does not pump
Cause
Remedy
No pumped fluid Open the container intake or sliders
Intake blocked Clean the intake, slider, suction port or intake strainer
Impeller/propeller blocked or obstructed Switch off the machine, secure it against being switched on again and free the
impeller/ propeller
Defective hose or piping Replace defective parts
Intermittent operation Check the control panel
The motor starts, but the motor protection switch triggers shortly after start-up
Cause
Remedy
The thermal trigger on the motor protection switch is in-
correctly set Have a specialist compare the setting of the trigger with the technical specifications
and adjust it if necessary
Increased power consumption due to major voltage drop Have an electrician check the voltage on each phase and rewire if necessary
Excessive voltage differences on the three phases Have a specialist inspect the connection and the switching system and correct it as
necessary
Incorrect direction of rotation Swap the 2 phases from the mains supply
Impeller/propeller impeded by adhesive material, blockages
and/or solid matter, increased current consumption Switch off the machine, secure it against being switched on again and free the
impeller/ propeller or clean the suction port
The pumped fluid is too dense Contact the manufacturer
The machine runs, but not at the stated operating levels
Cause
Remedy
Intake blocked Clean the intake, slider, suction port or intake strainer
Slide in the discharge line closed Fully open the slide
Impeller/propeller blocked or obstructed Switch off the machine, secure it against being switched on again and free the
impeller/ propeller
Incorrect direction of rotation Replace 2 phases on the mains supply
Air in the system Check the pipes, pressure shroud and/or pump unit, and bleed if necessary
Machine pumping against excessive pressure Check the slide in the discharge line, if necessary open it completely
Signs of wear Replace worn parts
Defective hose or piping Replace defective parts
Inadmissible levels of gas in the pumped liquid Contact the factory
Two-phase operation Have a specialist inspect the connection and correct it as necessary