Troubleshooting - Homa Chromatic 240W Sensoflat Original Instruction Manual

8. Troubleshooting

The following points must be taken into account to avoid
personal and material damage when troubleshooting ma-
chine failures:
• Correct a failure only if you have qualified staff, i.e. the
individual work must be carried out by trained special-
ist personnel, e.g. electrical work must be carried out
by a qualified electrician.
• Always prevent the machine from unintentional re-
start by disconnection it from the power supply. Take
appropriate precautionary measures.
• Ensure the safety shut-down of the machinery by a
second person at all times.
• Safeguard mobile machinery parts to prevent injuries.
• Unauthorized changes on the machinery are at own
risk and discharge the manufacturer from any liability!
The machine does not start
Cause
Interruption of the power supply, short circuit/short-circuit to
earth in the conduit and/or motor winding
Trip fuses, circuit breakers and/or monitoring devices
The machinery starts, the circuit breaker is released, but is off shortly after start-up
Cause
The thermal trigger on the circuit breaker is set incorrectly
Impeller/propeller slowed down due to adhesions, obstructions
and/or solids, increased power input
The medium is too thick
The machinery runs, but does not convey
Cause
There is no pumped medium
Inlet obstructed
Impeller/propeller blocked/slowed down
Defective tube/pipe
Pump adhere on flexible ground
The machinery is running, the indicated operating values are not met
Cause
Inlet obstructed
Gate valve in the pressure pipe closed
Impeller/propeller blocked/slowed down
Air in the system
The machinery conveys against too high pressure
Wear and tear
Defective tube/pipe
Inadmissible content of gas in the pumped medium
Dual phase operation
Too strong drawdown in operation mode
Remedy
Specialist to check conduit and motor and replace, if appropriate
Connections to be checked by a specialist and changed, if appropriate. Fit/
set up circuit breaker and fuses according to the technical instructions,
reset monitoring devices. Check impeller/propeller for smooth operation and
clean/restore to operability, if appropriate
Remedy
Specialist to compare the setting of the trigger with the technical instruc-
tions and to correct if appropriate
Switch off machinery, secure against restart, restore to operability of the
impeller/propeller/clean suction branch
Contact the manufacturer
Remedy
Open inlet for container/gate valve
Clean inlet, gate valve, suction piece, suction branch/suction filter
Switch off machinery, secure against restart, restore operability of impeller/
propeller
Replace defective parts
Move the pump on hard ground
Remedy
Clean inlet, gate valve, suction piece, suction branch/suction filter
Open gate valve completely
Switch off machinery, secure against restart, restore operability of impeller/
propeller
Check pipes, pressure mantle and/or part of pump, de-aerate, if appropriate
Check the gate valve in the pressure pipe, open completely if appropriate
Replace worn parts
Replace defective parts
Contact the manufacturer
Specialist to check connection and to correct, if appropriate
Check supply and capacity of the system, check settings and function of the
level control
ENGLISH | 27