Service; Service Documentation; Maintenance; Adjustment Of Run Time - Grundfos Sololift2 CWC-3 Installation And Operating Instructions Manual

7. Service

Warning
The product must only be serviced by
trained service personnel.
If the supply cable is damaged, it must
replaced by the manufacturer, the
manufacturer's service partner or
similarly qualified person.
To ensure safe and reliable operation,
always use original spare parts from
Grundfos.
For service kits, see www.grundfos.com >
International website > WebCAPS > Service.
The product must be thoroughly
cleaned before it is returned for
Note
service; otherwise the warranty will be
void.

7.1 Service documentation

Service documentation is available on
www.grundfos.com > International website >
WebCAPS > Service.
If you have any questions, please contact the
nearest Grundfos company or service workshop.

7.2 Maintenance

The lifting station does not require any special
maintenance, but we recommend that you check
operation and pipe connections at least once a year.
Change the carbon filter once a year.
See section 7.4 Service instructions.

7.3 Adjustment of run time

The default setting ensures proper operation in most
pipework. If the pipework is particularly long or short,
it may be necessary to adjust the run time.
For a guide to adjusting the run time, see
www.grundfos.com > International website >
WebCAPS.

7.4 Service instructions

Thanks to the product design, service is easy in case
of malfunction or blocked pump.
Digits refer to the pictures on the pages at the end of
this booklet.
Warning
Before carrying out any service work,
remove the fuse, pull out the plug, or
switch off the power supply. Make sure
that the power supply cannot be
accidentally switched on.
All rotating parts must have stopped
moving.
The product must only be serviced by
trained service personnel.
10
Impeller/grinder stuck
1.1 Disconnect the power supply.
1.2 Unscrew the plug in the cover.
1.3 Insert a screwdriver (min. 110 mm) through the
plug hole and into the slot of the shaft end.
Turn the shaft right and left to free the impeller/
grinder from dirt.
1.4 Fit the plug, and switch on the power supply to
check if the impeller/grinder can rotate freely.
Operation by means of a power drill
2.1 If the product cannot be operated by electrical
power, the toilet and tank can be emptied by
means of a power drill. First disconnect the
power supply.
Pressure switch pipe blocked
The pressure switch unit can be
Note
removed separately.
3.1 If the water level in the tank is above the motor
flange, drain the tank by means of the drain
hose. First disconnect the power supply.
3.2 Unscrew the cover.
3.3 Pull out the complete pressure switch.
3.4 Check and clean the pressure switch pipe.
Make sure that the little tube in the top
Caution
of the pipe has not become blocked
when you cleaned the pipe!
Lubricate the sealing area of the
Note
pressure switch for easier fitting.
Foreign body in tank
If the water level in the tank is above the motor
flange, drain the tank by means of the drain hose.
See 3.1. First disconnect the power supply.
Unscrew the cover. See 3.2.
4.1 Remove the four captive screws of the motor
flange.
4.2 Lift the motor flange to reduce the compression
of the O-ring. Insert a screwdriver into the notch
underneath the supply cable and press it down.
4.3 Lift out the complete motor-pump unit by the
handles.
Note
Lift the unit vertically before tilting it!
4.4 Check and clean the tank and impeller/grinder.
Warning
Beware of the sharp edges on the
grinder.
Wear protective gloves.
Carbon filter
5. The carbon filter should be replaced once a year
to ensure sufficient filter function.