Troubleshooting - Homa TCV series Original Instruction Manual

9. Troubleshooting

In order to prevent damage or serious injury while rec-
tifying machine faults, the following points must be ob-
served:
• Only attempt to rectify a fault if you have qualified
personnel. This means each job must be carried out
by trained specialist personnel, for example electrical
work must be performed by a trained electrician.
• Always secure the machine against an accidental
restart by disconnecting it from the electric system.
Take appropriate safety precautions.
• Always have a second person make sure the ma-
chine is switched off in an emergency.
• Secure moving parts to prevent injury.
• Independent work on the machine is at one's own
risk and releases the manufacturer from any warranty
obligation.
The machine will not start
Cause
Electricity supply interrupted – short circuit or earth
connection in the cable or motor windings
Fuses, the motor protection switch and/or monitoring
devices are triggered
The moisture sensors (option) has interrupted the power
circuit (operator-related)
Machine runs but does not pump
Cause
No pumped fluid
Intake blocked
Impeller/propeller blocked or obstructed
Defective hose or piping
Intermittent operation
The motor starts, but the motor protection switch triggers shortly after start-up
Cause
The thermal trigger on the motor protection switch is in-
correctly set
Increased power consumption due to major voltage drop
Excessive voltage differences on the three phases
Incorrect direction of rotation
Impeller/propeller impeded by adhesive material, blockages
and/or solid matter, increased current consumption
The pumped fluid is too dense
38 | EngliSH
Remedy
Have the motor and wires checked by a specialist and replaced if necessary
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
See fault: Mechanical shaft seal leaks, sealing chamber monitor reports fault and
switches the machine off
Remedy
Open the container intake or sliders
Clean the intake, slider, suction port or intake strainer
Switch off the machine, secure it against being switched on again and free the
impeller/ propeller
Replace defective parts
Check the control panel
Remedy
Have a specialist compare the setting of the trigger with the technical specifications
and adjust it if necessary
Have an electrician check the voltage on each phase and rewire if necessary
Have a specialist inspect the connection and the switching system and correct it as
necessary
Swap the 2 phases from the mains supply
Switch off the machine, secure it against being switched on again and free the
impeller/ propeller or clean the suction port
Contact the manufacturer