UH310
H I G H P R E S S U R E F I L T E R S
7
Filter element installation / servicing
During servicing, the external surfaces of the filter assembly must
be cleaned to remove any dust deposits.
Servicing must be conducted using suitable tools that do not
present a hazard.
Servicing must not be carried out when a potentially explosive
atmosphere is present.
CAUTION:
Filter elements should be replaced upon indication or
at specified intervals, six months maximum. Failure
to change the element will cause the filter to go on
bypass.
Refer to Service Parts List (Section 9) for item numbers for applicable
replacement element series. Remove and replace element as
follows:
7.1
Turn off and depressurize the system.
7.1.1 For UH310 series (cover service):
Open vent plug (7) at top of filter one and one-half turns.
Open the blanking plug (6b) partially on the filter head
and drain fluid into waste receptacle.
This sequence may be long for high viscosity fluids.
Replace and torque tighten drain plug to 12 ft/lb or 16Nm.
Unscrew and remove cover (3) from tube (2) counter-
clockwise when viewed from above. It will be necessary
to use a 1" socket wrench on the hexagon on the cover
(3) to loosen the cover initially.
Note: The UH310 series assembly is equipped with Pall's
'Auto-Pull' element extraction mechanism to facilitate element
removal. While removing the cap, tabs on the element endcap
lock into hooks in the cap and the element is automatically
pulled from the nipple.
7.1.2 For UH310H series (head service):
Open the drain plug (7) at the bottom of the bowl
assembly (tube and cover) and drain fluid from the bowl
into a suitable waste receptacle. Replace and torque
tighten drain plug to 12 ft/lb or 16Nm. Unscrew and
remove the bowl assembly (2 and 3) from head (1)
counter-clockwise when viewed from below. It will be
necessary to use a 1" socket wrench on the hexagon on
the cover (3) to loosen the cover initially.
7.2
Element replacement (UE310 Series): Remove filter
element (8), if already fitted, and carefully inspect the
interior surface (flow through the element is in-to-out) for
visible contamination. Normally no dirt should show, but
visible dirt or particles can be an early warning of system
component failure. Discard both the filter element
and its O-ring. The filter element is NOT CLEANABLE.
Any attempt to clean the filter element can cause
degradation of the filter medium and allow contaminated
fluid to pass through the filter element.
WARNING:
DO NOT ATTEMPT TO CLEAN OR RE-USE
THE ELEMENT. ONLY USE GENUINE PALL
REPLACEMENT FILTER ELEMENTS.
UH310 Series
s e r v i c e i n s t r u c t i o n s
7.3
DO NOT run the system without a filter element installed.
For UH310 series: check that the O-ring (4) between
the cover (3) and tube (2) is not damaged. For UH310H
series: check that the O-ring (5) between the tube (2)
and head (1) is not damaged. Use the replacement filter
as indicated by the part number on the element endcap.
7.4
Lubricate element O-ring with clean system fluid.
Reinstall element in the shell assembly. Lightly lubricate
cover-to-head or tube-to-head (as applicable) O-ring
with clean system fluid and reassemble the housing
until thread bottoms. The cover or tube should be
torque tightened using a suitable socket wrench
to 74 ft/lb or 100 Nm.
7.5
Bleed the filter by filling the filter until all air bleeds
through the vent plug(7), then torque tighten the vent plug
to 12 lb/ft or 16Nm. Check for leaks as per section 4.8.
7.6
After element change ENSURE DIFFERENTIAL
PRESSURE DEVICE IS RESET. Brass visual and
electrical and stainless steel electrical switches reset
automatically. When system reaches normal operating
temperature, check that the electrical switch and/or
visual warning button/flag has not actuated. If visual
indicator actuates due to a cold start condition, reset
again as per section 6.
8
Warranty, Limitation of Liability and
Remedies
THERE IS NO WARRANTY OF MERCHANTABILITY OR
FITNESS FOR ANY PARTICULAR PURPOSE WITH RESPECT
TO ANY OF THE PRODUCTS, NOR IS THERE ANY OTHER
WARRANTY EXPRESS OR IMPLIED, EXCEPT AS PROVIDED
FOR HEREIN.
For a period of twelve months from the date of delivery from
Seller or three thousand hours of use, whichever occurs first (the
"Warranty Period"), Seller warrants that products manufactured
by Seller when properly installed and maintained, and operated
at ratings, specifications and design conditions, will be free from
defects in material and workmanship. By way of explanation and
not limitation, the Seller does not warrant the service life of the filter
element as this is beyond the Seller's control and depends upon the
condition of the system into which the filter is installed.
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