12
Operation and maintenance manual for
Hydrotech Drumfilter HDF501-series
5..START-UP.AND.OPERATION
5.1.Start-up.procedure
1. Make sure that the drive unit cover is firm and correctly fitted.
2. Set the pump switch to 0 (see
6
in
Figure 5.2
).
3. Set the safety switch to ON (see
7
in
Figure 5.2
).
4. Set the selector switch to HAND (see
5
in
Figure 5.2
).
5. Open the main valve partly to make the water slowly enter into the filter
drum.
If the filter clogs it may be necessary to fill up the tank with water from an
external source to be able to start the pump.
6. When the water level inside the tank or goes above the suction pipe, the
pump switch should be set to 1.
WARNING!
The backwash pump must not be started before the water level has risen
above the suction pipe, otherwise the pump will run dry and break down.
7. When the water level inside the tank reaches above the suction pipe, then
set the selector switch from HAND to AUTO.
8. Open the main valve completely.
The filter is now running in automatic level control mode. It may be needed to
adjust the level sensor to make the filter run optimally (see section 5.2.3).
!
