Velcon VF-71E Installation Instructions Manual
VEL1658R12 0316 PN09-881
www.velcon.com
VF-71E Filter Housing Installation Instructions
Hydraulic & Fuel Filtration Division
VF-71E Filter Housing
Installation Instructions
DESCRIPTION
e VF-71E Filter Housing is designed for use in industrial applications with a variety of oils and other liquids. e
housing is shipped with no cartridge installed. Cartridges must be ordered separately.
CONNECTIONS SIZE: 3/4" NPT
HOUSING PRESSURE RATING: 150 psi
NOTE: FOR LIQUID SERVICE ONLY. Do not use or leak test this lter vessel with compressed air or
other gasses.
INSTALLATION
1. Install the housing in an area that provides access to the inlet, outlet, and drain ttings. Allow at least 18 inches of
clearance above the band clamp for cartridge removal.
2. Make inlet and outlet connections to the appropriately labeled ttings. DO NOT ow backwards through the
housing.
3. Installation of pressure gauges is recommended to monitor di erential pressure across the housing and to allow
accurate determination of when the lter cartridge should be changed. e auxiliary tap in the vessel lid can be
used to install a gauge for measuring the pressure upstream. If the backpressure is expected to vary, it is recommended that gauges be installed upstream and downstream.
4. On systems where pressure can exceed 75 psi, a pressure bypass around the pump should be installed to protect
the cartridge and the system from a high pressure shock of sudden cartridge seal-o due to a slug of water.
5. Installation of shut-o valves on the inlet and outlet lines may be required to isolate the housing during cartridge
change-out.
6. Install the cartridge as outlined in the cartridge change-out section.
7. Write the proper cartridge model number on the enclosed replacement cartridge label, fasten it to the housing
shell just below the VF-71E label, then cover the cartridge label with the enclosed clear plastic sticker.
OPERATION
1. Check that all unused ttings on the vessel are plugged.
2. Open the top air vent and check that the bottom housing drain is closed.
3. Start the pump and verify that air is venting from the housing. IF NOT,
TURN THE UNIT OFF; check all lines for
obstructions.
4. Allow all air to vent from the housing. Close the top air vent when uid
begins to bleed out.
5. e vent should be opened periodically to expel any entrapped air. A large
accumulation of air will reduce the ltering area of the cartridge.
6. Check all ttings and lid for leakage. Additional tightening may
be required.
7. Note the pressure gauge reading. For most oils it will be below 5 psi with a
clean cartridge.
-1-
Parker Hanni n Corporation
Hydraulic & Fuel Filtration Division
1210 Garden of the Gods Road
Colorado Springs, CO 80907 USA
VEL1658R12 0316 PN09-881
www.velcon.com
VF-71E Filter Housing Installation Instructions
CARTRIDGE CHANGE-OUT
1. When the pressure has risen by 20-25 psi over the initial clean pressure, or
when di erential pressure reaches 25 psid, the cartridge must be changed.
2. Turn the unit o .
3. Vent the housing at the cover, and drain all liquid through the bottom drain.
MAKE CERTAIN THE HOUSING IS COMPLETELY DRAINED BEFORE
REMOVING THE LID.
4. Loosen the band clamp and remove the lid.
5. Remove the old cartridge and install a new one. See the accompanying
gure for proper assembly of parts. Use a new rubber washer included with
each cartridge, and tighten the thumb screw until the rubber washer curls
slightly.
6. Clean the cover o-ring and o-ring groove. Lightly lubricate the O-ring with
the fuel or oil it will be used in, and position it on the groove (or head).
7. Replace the cover and fasten the band clamp.
8. Close the bottom drain and restart ow. Close the top air vent when the
housing has lled.
9. Check all ttings and cover for leaks.
Hydraulic & Fuel Filtration Division
REPLACEMENT PARTS
Description of Part Velcon Part Number
Band Clamp Assembly 025X903
Air Vent 550X002
Top Seal Plate 12-02M
Rubber Gasket G-0305
Flat Washer 402X046
Lock Washer 402X082
umb Screw 404X101
*Std. Buna-N Lid Gasket G-1016
*Optional Viton A Lid Gasket G-1016A
*NOTE: Lid gaskets can be obtained at most O-ring suppliers. Specify size 2-442.
-2-
Parker Hanni n Corporation
Hydraulic & Fuel Filtration Division
1210 Garden of the Gods Road
Colorado Springs, CO 80907 USA
Loading...