Changing The Oil In The Oil Separation Chamber; General Overhaul; Troubleshooting And Possible Solutions - Wilo -Rexa PRO V06DA-110/EAD1X2-T0015-540-O Einbau- Und Betriebsanleitung

8.3.9 Changing the oil in the oil separation chamber

Fig. 8: Plugs
1 Plug
1 Lay the unit horizontally on a firm surface with the plug
facing upwards.
Make sure that the unit cannot fall over and/or
slip away.
2 Slowly and carefully remove the plug.
Caution: The lubricant may be pressurized.
3 Drain off lubricant by turning the unit until the opening
faces downwards. Collect the lubricant in a suitable
container and dispose of according to the require-
ments in the "Disposal" chapter.
4 Turn the unit back until the opening is facing upwards
again.
5 Fill the new lubricant by means of the opening in the
plug. The oil must reach to about 1 cm (0.4 in) below
the opening. Comply with the specified lubricants and
filling quantities!
6 Clean the plug, fit with a new sealing ring and screw it
in again.

8.3.10 General overhaul

During a general overhaul, the bearings, shaft seals,
O rings and power supply cables are inspected and
replaced as required in addition to normal maintenance
work. This work may only be conducted by the manu-
facturer or an authorized service workshop.

9 Troubleshooting and possible solutions

In order to prevent damage or injury while rectifying
product faults, the following points must be observed
in all cases:
• Only attempt to rectify a fault if you have qualified
staff. This means that each job must be carried out by
trained specialist staff. For example, electrical work
must be performed by a trained electrician.
• Always secure the product against an accidental restart
by disconnecting it from the mains. Take appropriate
safety precautions.
• Always have a second person on hand to ensure that
the product has been switched off for safety.
• Secure moving parts to prevent injury.
• Unsanctioned changes to the product are made at the
operator's own risk and release the manufacturer from
any warranty obligations.
9.0.1 Fault: The unit will not start
1 Electricity supply interrupted, short circuit or earth
fault in the cable or motor windings
• Have the motor and wires checked by a specialist
and replaced if necessary.
2 Fuses, the motor protection switch and/or monitoring
devices are triggered
• Have a specialist inspect the connections and cor-
rect them as necessary.
Installation and operating instructions Wilo-Rexa PRO...
• Have the motor protection switches and fuses
installed or adjusted according to the technical speci-
fications, and reset monitoring equipment.
• Check that the impeller/propeller runs smoothly.
Clean or free it as necessary.
3 The moisture sensors (optional) have interrupted the
power circuit (operator-related)
• See fault: Mechanical shaft seal leak, moisture sen-
sors report a fault or shut down the unit.
9.0.2 Fault: The unit starts, but the motor protection
switch triggers shortly after start-up
1 The thermal trigger on the motor protection switch is
incorrectly set
• Have a specialist compare the setting of the trigger
with the technical specifications and correct if nec-
essary.
2 Increased power consumption due to major voltage
drop
• Have an electrician check the voltage on each phase
and rewire if necessary.
3 Two-phase operation
• Have a specialist inspect the connection and correct
it as necessary.
4 Excessive voltage differences on the three phases
• Have a specialist inspect the connection and the
switching system and correct it as necessary.
5 Incorrect direction of rotation
• Swap the two phases from the mains supply.
6 Impeller/propeller impeded by adhesive material,
blockages and/or solid matter, increased current con-
sumption
• Switch off the unit, secure it against being switched
on again, free the impeller/propeller or clean the
intake port.
7 The pumped fluid is too dense
• Contact the manufacturer.
9.0.3 Fault: Unit runs but does not pump
1 No pumped fluid
• Open the container intake or sliders.
2 Intake blocked
• Clean the intake, slider, intake port or intake strainer.
3 Impeller/propeller blocked or obstructed
• Switch off the unit, secure it against being switched
on again and free the impeller/propeller.
4 Defective hose or pipeline
• Replace defective parts.
5 Intermittent operation
• Check the control panel.
9.0.4 Fault: The unit runs, but not at the stated operating
levels
1 Intake blocked
• Clean the intake, slider, intake port or intake strainer
2 Slider in the discharge pipe closed
• Fully open the slider
3 Impeller/propeller blocked or obstructed
• Switch off the unit, secure it against being switched
on again and free the impeller/propeller
4 Incorrect direction of rotation
• Replace two phases on the mains supply
5 Air in the system
• Check the pipelines, pressure shroud and/or hydrau-
lics, and bleed if necessary
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