Homa FV 25, Original Instruction Manual

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EngliSH | 15
5. Assembly and Commissioning
5.1. Assembly of the flush valve
The flush valve is fitted between the pressure socket and
the coupling system. There are two variations:
GRP10-50
First screw the 90° elbow (3) with a nut (6) onto the
flanged pump coupling (4). The elbow (3) has to be aligned
as shown in the image and secured with the nut (6). Now
the flush valve (2) is screwed with a nut (6) onto the el-
bow (3) and must also be secured with the nut (6). The
flush valve (2) must be screwed in a way that it is in a
vertical position in the pump sump following sliding the
pump down, which does not necessarily mean vertically
in relation to the pump. Subsequently screw the flanged
pump coupling (4) onto the pressure socket (1) and align
it. GRP10-21: Remove the screws (5) and turn through
90° the motor housing. Then screw the pump coupling (4)
onto the discharge (1) and align it. Now turn through 90°
the elbow back and fix the screws (5)
GRP56-118
First align the adapter (5) in front of the pressure socket
(1), as shown. Position the flanged pump coupling (4) in
front of the adapter (5). Subsequently fix the adapter (5)
between the pressure socket (1) and the flanged pump
coupling (4) with the screws (7) and the washers (6).
Screw tight by means of the nuts (10) and the washers
(9). Now screw the reduction piece (3) onto the flush valve
(2) and screw it into the adapter (5) subsequently. Both
screw connections must be secured with glue. Ensure
that the flush valve (2) is in vertical position in the pump
sump after sliding the pump down, which does not neces-
sarily mean vertically in relation to the pump.
5.2. Start-Up
For the commissioning, please also read the operat-
ing manual from the respective pump being used.
The initial commissioning, it is recommended to
clean the pump pit in advance. It is possible that old
deposits may be agitated and the can be placed in
the flush valve.
The outlet jets always have to be installed on the
flush valve.
In order to reach the recommended flush time, the flush
valve can be set on the current restrictor:
Pump size Geodetic con-
veyor height
[m] / [ft] Restrictor
level Approx.
flush time
[sec]
from GRP10 10 – 15 / 32 – 49 2 30 - 50
< 10 / 32 1 20 - 40
from GRP24 > 15 / 49 4 40
10 – 15 / 32 – 49 3 20 - 40
< 10 / 32 1 30
GRP50-118 > 30 / 98 5 30 - 40
20 – 30 / 65 – 98 4 30 - 50
15 – 20 / 49 – 65 3 40
The values are only guidelines and serve for pre-setting.
During operation, it is possible to change the flush valve.
To do so, proceed as follows:
1. If you would like to reach a short flush time, the cur-
rent restrictor must be set to a lower level.
2. With a longer flush time, the current restrictor must
be set to a larger value.