Manual and maintenance instructions
for INTERNORMEN-Coarse filter, change-over DGFK/EDGFK
4. Maintenance
The cleaning of the strainer basket is necessary when raching the unit specific pressure difference respectively reaching the
maximum pressure difference given by the clogging indicator.
This has to be carried out as follows:
- Opening of the pressure balance valve
- Switching over the positioning pin from the operating side through the other side
- Closing the pressure balance valve
- Connect the air-bleed and the drain plug of filter side to be maintained with suitable pipes and place a collecting pan for the
operating fluid flowing out
- Opening of the air-bleed and drain plugs of the filter side to be maintained until no more operating fluid flows out
- Release of the screws of the lid of the filter side to be maintained and remove the filterlid
- Unscrew the screw plugs of the strainer basket and pull it vertically out of the filter housing
- Dip the strainer basket in a cleaning fluid and wash it off. The cleaning can also be carried out by use of steam or compressed
air. The compressed air has to be blown through the strainer basket from the outside to the inside.
- Controlling of the integrity of the filter wire mesh. Damged or no more cleanable strainer basket have to be replaced by new
strainer baskets
- Damage control of the lid seal, and is to be replaced if necessary
- The serviced strainer basket is lowered into the filter housing and the screw plugs have to be tightened
- Fixing the filter lid into the filter housing and tightening the screw plugs. The screws have to be tightened over cross and have
to be tightened again after the first pressure load
- Closing of the drain plugs
- Opening of the pressure balance valve until bubble-free operating fluid flows out of the air-bleed connection
- Close the pressure balance valve and the air-bleeder
Now, the serviced filter side is ready for operation.
For a short time the unit volume flow should be switched over to the serviced filter side to control the efficacy of the service.
The pressure difference has not to exceed the specified pressure difference of new strainer baskets. After this function control the
screws of the filter lid have to be tightened.
5. Pressure Difference Measuring
In case of filters installed with clogging indicators a permanent measuring of the pressure difference takes place. The indication
corresponds to the kind of clogging indicators; either visual or visual and electrical respectively electronical.
Additionally the measuring connections G ¼“ could be installed on the selector shaft to be used for external pressure gauges.
Recommended are the measuring connections according to data sheet 1650.
6. Service
The service will be performed by
EATON Technologies GmbH
Friedensstr. 41
D-68804 Altlussheim
Germany
phone: +49(0)6205-2094-0
fax:
+49(0)6205-2094-40
Special questions about the operation of the filter will also be answered within this area.
Spare parts respectively wearing parts have to be ordered according to the spare part list of the filter-data-sheet.
Sheet No.
21621-4C
Seite 2/2
EDV 08/12 - Englisch
+49 (0)6205 2094-0
+49 (0)6205 2094-40
phone
fax
Friedensstrasse 41, 68804 Altlussheim, Germany
e-mail
url
www.eaton.com/filtration
