Operations and Maintenance Manual
for Eaton Pressure Filters, Change-Over
DWF(A) / EDWF(A) 1505, 3005, 4505, 6005
Sheet No.
67143-4B
Page 1/2
This manual contains operation and maintenance information for series DWF(A) / EDWF(A) 1505, 3005, 4505, 6005 and
related specifications. For customer specific models, there are additional instructions on those data sheets. The pressure
filters listed above are intended for the filtering of liquid media.
1. Safety instructions
Prior to operating the filter, operation and maintenance instructions need to be read carefully. Failure to follow
these instructions could lead to death, severe injury or property damage. Eaton does not assume liability for
any damage that occurs to due misuse of equipment.
Follow the operating conditions specified on each data sheet. Operating outside of these parameters can
cause damage to important pressure holding parts and sealing. Pay special attention to excess pressure,
temperature range and operating fluid. The compatibility of filter components with the operating fluid should
always be considered before operation.
Always wear safety goggles and gloves when working on the filter. Under working conditions, the filter
housing is pressurized. Do not try to loosen or remove any part of the filter or the filter housing during
operation. The operating fluid could escape at high pressure and high temperatures. This does not apply to
the offline vessel that is not under operation. Leaking operating fluid can cause injury and burns. Do not open
the filter housing until you make sure it is not pressurized. The filter surface may be hot and cause burns.
When changing the filter, check the operating temperature before touching any surface during operation. If
you come into contact with the operating fluid, please follow the safety instructions provided by the fluid
manufacturer.
To ensure proper fit and function, only use Eaton spare parts.
2. Installation
The filter is supplied and delivered ready to be installed. The mounting position of the filter is vertical. The filter has to be fitted with
fastening screws in size and amount according to the corresponding fastening bore holes of the filter housings. The filter should
be mounted to minimize tensile forces on the filter housing and change-over valve. The piping should be connected with flanges.
During installation ensure that:
‐
No dirt and no impurities of foreign fluids penetrate the filter.
‐
The connections for input and output are correctly attached to the pipe system.
‐
The pipe system is connected to the filter to minimize stress on the filter.
‐
Ensure the filter element is accessible for service and change out.
Clogging indicators should be installed according to the instructions on the unit specific data sheet and the instructions in this
manual.
3. Commissioning
Ensure the filter installation is complete and the system is clean before commissioning. Follow these instructions to purge the filter
before commissioning the system:
1.
Before commissioning, ensure that the filter element and seals are clean and properly installed
2.
Place the switchgear lever in the middle position
3.
Open the air bleed screws or connections. Connect tubes that lead to a drain pan (air-bleed connection information can
be found on data sheet 1651)
4.
Allow the operating fluid to drain (reduce volume flow from 10 to 50 l/min or 2.6 to 13.2 GPM
until it is bubble-free and
flows out of both air bleeding tubes
5.
Shut of application flow
6.
Remove the air bleeding tubes and close the air-bleed bore holes or air-bleed connections
7.
Switch to the filter housing you would like to operate first by using the switch gear lever. Instructions for using this
switchgear are on a label on the filter housing.
4. Change of elements
Change the filter elements when the unit pressure differential on the clogging indicator reaches the maximum pressure differential
specified for each unit on the data sheet. Do not allow the pressure differential to exceed 6 bar (87 psi) before replacing the
elements.
Follow these instructions to change the filter element without interrupting filter operation:
1.
Open the pressure balance valve
2.
Move the switchgear lever from the operating vessel to the vessel you need to service. Switch gear instructions are
located on a label on the filter vessel
3.
Close the pressure balance valve
4.
Connect the air-bleed and the drain plug to the operating vessel and pipe to a collection pan to catch the operating fluid
5.
Keep the air bleed and drain plug open until no more operating fluid drains out
6.
Loosen the screws of the lid on the vessel that needs servicing and remove the filter lid
7.
Remove the filter elements
8.
Clean the filter housing. Ensure that no dirt or cleaning fluid get into the clean side (center tube) of the filter element
