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8. Shutdown
8.1. Temporary shutdown
For this type of shutdown, the machine remains installed
and is not cut off from the electricity supply. For temporary
shutdown, the machine must remain completely submer-
ged so that it is protected from frost and ice. Make sure
the operating room and the pumped fluid cannot be cover-
ed by ice. This ensures that the machine is always ready
for operation. During longer shutdown periods, carry out
a regular (monthly to quarterly) function run for a period
of 5 minutes.
Caution!
Only carry out a function run under the proper con-
ditions of operation and use. Never run the machine
dry. This can result in irreparable damage!
8.2. Final shutdown / storage
Switch off the system, disconnect the machine from the
electricity supply and dismantle and store it. Note the fol-
lowing information concerning storage:
Beware of hot parts!
When removing the machine, be careful of the tem-
perature of the housing components. These can heat
up to well above 40°C. Let the machine cool down to
ambient temperature before you touch it.
•
Clean the machine.
•
Store it in a clean, dry place, protect the machine
against frost.
•
Place it down vertically onto a firm foundation and se-
cure it against falling.
•
Seal the intake and discharge ports of pumps with
suitable material (such as foil).
•
Support the electric connecting lead on the cable
lead-in to help avoid a permanent deformation.
•
Protect the ends of the electric power cable from
moisture.
•
Protect the machine from direct sunshine as a pre-
ventive measure against brittleness in elastomer
parts and the propeller and casing coating.
•
When storing the machine in a garage please remem-
ber: Radiation and gases which occur during electric
welding destroy the elastomers of the seals.
•
During lengthy periods of storage, regularly (for ex-
ample every six months) turn the impeller or propeller
by hand. This prevents indentations in the bearings
and stops the rotor from rusting up.
8.3. Restarting after an extended period of storage
Before restarting the machine, clean it of dust and oil de-
posits. Then carry out the necessary maintenance actions
(see "Maintenance"). Check that the mechanical shaft
seal is in good order and working properly. Once this work
has been completed, the machine can be installed (see
"Installation") and connected to the electricity supply by
a specialist. See "Start-up" for instructions on restarting.
Only restart the machine if it is in perfect condition and
ready for operation.
38 | ENGLISH
9. 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 sup-
ply, 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
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 instructions and to
correct if appropriate
Switch off machinery, secure
against restart, restore to
operability of the impeller/pro-
peller/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 operabi-
lity of impeller/propeller
Replace defective parts
Move the pump on hard ground
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