Faults, Causes And Remedies - salmson Rocsan neo Installation Et Mise En Service

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2. Unscrew the screw plug slowly, but do not unscrew it
completely. WARNING! Overpressure in the motor!
Stop turning the screw plug further if hissing or
whistling is audible! Wait until the pressure has com-
pletely dissipated.
3. After the pressure has dissipated, fully unscrew the
screw plug.
4. Place a suitable tank to collect the operating fluid.
5. Drain the operating fluid: Rotate the pump until the
opening points downwards.
6. Check the operating fluid: Notify customer service if an
operating fluid contains metal chips!
7. Pour in operating fluid: Rotate the pump until the
opening points upwards. Fill-in the operating fluid into
the opening.
⇒ Comply with the specifications for operating fluid
locations and quantity!
8. Clean the screw plug, replace the seal ring and screw it
back in. Max. tightening torque: 8 Nm!
10

Faults, causes and remedies

DANGER
Danger due to fluids hazardous to health!
Danger of death in case of pumps with fluids haz-
ardous to health! Wear the following protective
equipment while performing the work:
• Closed safety goggles
• Breathing mask
• Protective gloves
⇒ The equipment listed here is the minimum re-
quirement, observe the specifications of the
work regulations! The operator must make
sure that the personnel has received and read
the work regulations!
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical work
can lead to death due to electric shock! Electrical
work must be carried out by a qualified electrician in
accordance with the locally applicable regulations.
52
Faults, causes and remedies
DANGER
Potentially fatal danger due to dangerous
autonomous work!
Work in chambers and narrow rooms as well as work
involving risk of falling are dangerous work. Such
work may not be carried out autonomously! A
second person must be present for safety reasons.
WARNING
No persons are allowed to be present inside
the working area of the pump!
Persons may suffer (serious) injuries while the pump
is in operation! No persons may therefore be present
inside the working area. If persons must enter the
working area of the pump, the pump must be de-
commissioned and secured against being switched
on again without authorisation.
WARNING
Sharp edges on the impeller and suction port
Sharp edges can form on the impeller and suction
port. There is danger of limbs being cut-off! Pro-
tective gloves must be worn to protect from cuts.
Fault: Pump does not start
1. Electricity supply interrupted or short-circuit/earth
fault in the cable or motor winding.
⇒ Have the connection and motor checked by a
qualified electrician and replace if necessary.
2. Tripping of fuses, of the motor protection switch or the
monitoring equipment
⇒ Have the connection and the monitoring equip-
ment checked by a qualified electrician and change
it if necessary.
⇒ Have the motor protection switches and fuses in-
stalled and adjusted according to the technical
specifications by a qualified electrician and reset
monitoring equipment.
⇒ Check the impeller to make sure that it runs
smoothly, clean the hydraulics if necessary.
Fault: Pump starts up, motor protection trips after
short period
1. Motor protection switch set incorrectly.
⇒ Have the adjustment of the trigger checked and
corrected by a qualified electrician.
2. Increased power consumption due to major voltage
drop.
⇒ Have the voltage of individual phases checked by a
qualified electrician. Contact the electricity distri-
bution network.
Wilo Salmson France SAS 1703