Maintenance; General; Maintenance Schedules And Work; Troubleshooting - Homa FV 50 Manuel D'instructions Original

6. Maintenance

6.1. General

It is recommended to send the flush valve to an autho-
rized service center for repair and maintenance work.

6.2. Maintenance Schedules and Work

The flush valve is inspected with the maintenance inter-
vals of the pump.
Furthermore, the flush valve should be subject to a gen-
eral recovery by the customer service every four years.
Operating Equipment Change
The oil being used in the flush valve is an authorized drive
oil with a viscosity ISO VG 220 and a freezing point of
-24°C / -11°F.
If an oil with a lower viscosity is used, the flush time is
shortened. The flush time is longer with a higher viscosity.
Starting Torque
for A2/A4 screws (friction factor = 0,2)
Firmness 70
M6 7 Nm
M8 17 Nm
M10
33 Nm
20 | EngliSH
Firmness 80
11,8 Nm
28,7 Nm
58 Nm

7. Troubleshooting

The most frequent cause of error is when the flush valve
is clogged. It is caused by particles that are larger than the
valve outlet. Through such particles, it is possible that the
flush valve does not close within the designated time or
remains completely open.
With such a current, control the following point:
• No particles may be in the flush valve
• The external membrane is normally filled with oil
and through this, it is bent outwards. If the external
membrane has caved in, it can be damaged or the
internal membrane may be damaged. In both cases,
exchange the damaged membrane and clean the oil
chamber and current restrictor. The oil chamber has a
fill quantity of 0.08l.
• If the external membrane is filled with oil, check the
quality of the oil and clean the current restrictor.
Further steps for troubleshooting
If the items listed here do not help you rectify the fault,
contact our customer service. They can help you as fol-
lows:
• Telephone or written help from customer service
• On-site support from customer service
• Checking and repairing the machine at the factory
Note that you may be charged for some services provided
by our customer support. Customer service will provide
you with details on this.