Velcon VF-61UL User manual

-1- 1981-R206/07
P/N09-1034
© 2007 Velcon Filters, Inc.
VF-61UL
INSTRUCTIONS
1210 Garden of the Gods Rd., Colorado Springs, CO 80907
Phone: [phone] FAX: [phone]
e-mail: [email protected] / web site: www.velcon.com
*****CAUTION!*****
To protect the fuel system, including the VF-61UL and
other components, be sure to install pressure relief valve(s).
DESCRIPTION
The VelconVF-61UL filter housing is designed to operate with variousAquacon®or microfilter
elementsindieselfuelapplications. Thefilterhousingisshippedwithnocartridge installed. Cartridges
must be ordered separately. TheVF-61ULvessel only (no cartridges) is UnderwritersLaboratory
Approvedunder Component Listing.
Connections Size: 1-1/2" Female NPT
Housing Pressure Rating: 150 psi
NOTE: FOR LIQUID SERVICE ONLY. Do not use or leak test this filter vessel with compressed
air or other gases.
MODEL DEGREE OF COLLAPSE
TYPE NUMBER FILTRATION STRENGTH
PLEATED MEDIA FO-512PL1/21/2MICRON 75 psi
(DirtRemovalOnly) FO-512PL05 5 MICRON 75 psi
FO-512PL25 25 MICRON 75 psi
Aquacon®MEDIA AC-51205 5 MICRON 75 psi
(Dirt andWater
Removal) AD-51225 25 MICRON 75 psi
CARTRIDGE SELECTION

-2-
INSTALLATION
Install the housing at a convenient point in the line. Note “Inlet” and “Outlet” markings on the cast
head which indicate direction of flow. DO NOTinstall the housing backwards.
Provide room for the housing shell to clear the cartridge during change-out.
It is good practice to install a differential pressure gauge so that the differential pressure across the
housingcanbemonitored. This allowsaccurate determinationofwhenthecartridge shouldbe changed.
Part number 10678, as described on Form 1715 (PN 09-880) is a differential pressure gauge
specifically designed to be used on VF-61. NOTE: PN 09-880 Pressure Gauge is not UL tested or
approved.
FOR Aquacon®CARTRIDGES USED IN DIESEL FUEL SERVICE, ALWAYS INSTALLA
DIFFERENTIAL PRESSURE GAUGE OR OTHER MEANS OF DETERMINING THE
DIFFERENTIAL PRESSURE. For diesel fuel service, flow rate should be kept between 15 and 50
gpm. Consult factory for other flow applications.
On systems where pressures 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 or sudden cartridge seal-
off due to a slug of water in the product.
Valves ahead of and behind the housing may be required to isolate it during cartridge change-out.
CARTRIDGE CHANGE-OUT
Replace the cartridge when the differential pressure exceeds 25 psi, after 1 year of service, when the
flow is significantly reduced, or if pressure has been steadily climbing and then begins to decrease –
whicheveroccurs first.
IMPORTANTSAFETYPRECAUTION:
MAKE CERTAIN FILTER HOUSINGIS COMPLETELYVENTED
BEFORE OPENINGHOUSING.
1. Turnoffpump.
2. Closeisolationvalves (ifany)and openthe valve ventat the top.
3. Placeabucketunderthehousingtocontainanyspilledliquid.
4. Drainallliquidfromthehousingthroughthebottomplug.
5. Loosen the four bolts and rotate out and down to clear the top clamp. Drop the housing shell.
Removethe spentcartridge.

-3- 1981-R206/07
P/N09-1034
© 2007 Velcon Filters, Inc.
6. Wipethe insideoftheshellcleanofanycontaminants.
7. InspecttheO-ringandreplaceifdamaged. LightlylubricatetheO-ringwiththefueloroilinwhich
itwill be used,and position itonthe head.
8. Installanewelementontothenozzleofthefilterhead. Twistandpushthecartridgeuntilitbottoms
againstthestepon thenozzle.
9. Liftshelluptothehousing head, making sure the head O-ring is in
place.Alignshellbolts so they do not interfere with inlet and outlet
piping.Rotate boltsoverclamp top half(seephoto). Note:SmallO-
rings on bolts do not seal, but just hold washers next to bolt head.
Tightenall boltsto 33ft-lbs, alternatingin acriss-cross fashion.
10. Open isolation valves and the vent valve so that the vessel slowly
bleedsairfromthe topventwhilefillingthehousing.
11. Closetheventwhenthe housinghas filled.Check allfittingsand the
head/shelljunctionforleaks.
REPLACEMENT PARTS
The VF-61UL is shipped with a Buna-N O-ring installed. When ordering replacement O-rings from
Velcon, specify:
G-0986 for Buna-N (ULApproved)
420X066 forViton (ULApproved)
Use only ULApproved O-rings listed above to keep ULComponent Listing status.
WARNING: Absorbent-type monitor cartridges will not remove water from
fuel containing alcohol-blending agents (commonly called gasohol). For
removal of solids, please use Velcon particle removal filters specifically
made for gasohol. Consult your Velcon representative.