Direction Of Rotation; Resetting The Pump; Maintenance And Service - Grundfos SL1 AUTOADAPT Serie Montage- Und Betriebsanleitung

10.3 Direction of rotation

The pump can be started for a very short
Note
period without being submerged to check
the direction of rotation.
All single-phase pumps are factory-wired for the
correct direction of rotation.
The electronics incorporated in three-phase pumps
ensures that the pump does not start with a wrong
phase sequence, and consequently wrong direction
of rotation.
If the pump does not run, and the liquid level is
above the dry-running sensors, interchange L1 and
L2.
The impeller rotates clockwise when the
pump is viewed from above. When started,
Note
the pump will jerk in the opposite direction
of the direction of rotation.
Fig. 13 Jerk direction

10.4 Resetting the pump

To reset the pump, switch off the power supply to the
pump for 1 minute, and switch it on again.
18

11. Maintenance and service

Warning
Before starting work on the pump, make
sure that the fuses have been removed or
the mains switch has been switched off.
Make sure that the power supply cannot
be accidentally switched on.
All rotating parts must have stopped
moving.
Warning
Except for service on the pump parts, all
other service work must be carried out by
Grundfos or a service workshop
authorised by Grundfos and approved for
servicing explosion-proof products.
Before carrying out maintenance and service, flush
the pump thoroughly with clean water. Rinse the
pump parts in water after dismantling.
Warning
When loosening the screws of the oil
chamber, note that pressure may have
built up in the chamber. Do not remove the
screws until the pressure has been fully
relieved.
The cleaning intervals in section
11.1 Recommended cleaning intervals for
sensors in standard pumps
guidelines and must be matched to the
specific pit.
For explosion-proof pumps, the cleaning
intervals in section
intervals for sensors in explosion-proof
pumps must be observed.
During long periods of inactivity, we
Note
recommend that you check the function of
the pump.
Service videos can be found in Grundfos
Note
Product Center at www.grundfos.com.
are stated as
11.2 Required cleaning