UH319
UH319 Series
H I G H P R E S S U R E F I LT E R S
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 UH319C series: check that the O-ring (4)
between the cover (3) and tube (2) is not damaged. For
UH319H 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 system and check for leaks as per
section 4.8.
7.6
After element change ENSURE DIFFERENTIAL
PRESSURE DEVICE IS RESET BY PUSHING IN THE
RED BUTTON; electrical switches reset automatically.
When system reaches normal operating temperature,
check that the electrical switch has not actuated and/or
the visual warning button has remained depressed. If
visual indicator rises 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.
4
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.
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 UH319C 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 ad 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 UH319C 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 UH319H 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 (UE319 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.
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.
