Pall UR229, UR229C, UR229H Service Manual

UR229

EN

BR

UR229 Series

EN

UR229 Service Instructions

ENGLISH

service instructions

M&ESIUR229ENa

UR229

UR229 Series

DUPLEX FILTER ASSEMBLY service instructions

1 Specifications

Housing materials:

Head, Valve Body, and Cover: Ductile iron
Tube: Steel
Shell: Steel, with corrosive

resistant plating
Check Valve: Steel
Ball valve: Stainless steel, carbon steel

and nonmetallic

Maximum operating pressure:

110 bar g (1600 psig )

Proof pressure:

165.5 barg (2400 psig)

Minimum burst pressure:

441 barg (6400 psig)

Element collapse:

UR219 element 10 bar (150 psid) differential minimum

Operating temperature range:

43 °C to 121 °C (-45 °F to 250 °F) with Nitrile
seals for petroleum fluids

-29 °C to 121 °C (-20 °F to 250° F) with
fluorocarbon seals for specified synthetic fluid

-43 to 121 °C (-45 to 250 °F) with ethylene
propylene seals in phosphate ester.

Bypass valve setting options:

1.7 ± 0.3 bar (25 ± 5 psid) cracking pressure

3.4 ± 0.3 bar (50 ± 5 psid) cracking pressure

4.5 ± 0.3 bar (65 ± 5 psid) cracking pressure
Non bypass

Seals:

Nitrile, fluorocarbon or ethylene propylene

CAUTION:
Maximum surge flow should not exceed 1.3 times
normal flow.

The actual operating conditions should be checked by the
user to ensure that the element, housing, and all seals are
compatible with the fluid and application, and are within local

safety codes. Please contact Pall Corporation or approved
distributor if further information is required.

2 Receipt of equipment

The filter housing, and any optional equipment, are
packed individually for assembly by the customer.
Unpack carefully and ensure optional items are not
mislaid in the packaging that will be discarded.

3 General sources of information

3.1 For dimensions, operating parameters, assembly/
element part number, ordering information, notes,
performance data, and specifications refer to datasheet.

3.2 Where under reasonably foreseeable conditions,
including external fires, the allowable limits could be
exceeded, suitable protective devices must be installed
by the customer within the connecting fluid system.

4 Installation of housing

4.1 The filter can be installed in any attitude, but for ease of
servicing, it is recommended that it be installed vertically
with the filter tube and cover pointing upwards for
UR229C version and downwards for UR229H version.

4.2 The minimum clearance required for element removal of
is as follows:

4.2.1 UR229C series (cover service): 429mm (16.9in)

4.3 Threaded differential pressure devices, when fitted, must

NOTE: Head has a machined port for a differential pressure
warning device. The port may be sealed with a port plug
kit. Never place the port plug kit in this port without first
installing uniform size -014 Oring in lower O-ring groove,
otherwise a small bypass flow will result,
allowing contaminant downstream of the filter element.

4.4 Mount the filter assembly using the four .50-13x.75 deep

threaded holes in the valve body assembly.

NOTE: Piping supports should be provided as close as is
practicable to the port connections in order to minimize
external loads. This filter assembly must NOT be electrically
isolated from the users earthling system. This filter assembly
must be earthed by connecting the users earthing system to
one of the inlet/outlet connections.

CAUTION:
Reverse flow through filter element will cause damage.

4.5 Lines or hoses can be connected to the following

Port Type Port Size
A20 1.625 - 12

C20 1.25 BSPF
D20 1.25 Dia. w/4x.438-14

Mounting Holes
F20 1.25 Dia. w/4xM10x1.5-6H

Mounting Holes

NOTE: Painting of the filter housing is optional. The coating
on the filter housing is a suitable painting base. Cover
the differential pressure warning device and nameplate if
painting the housing.

4.6 Commission filter assembly as follows:

WARNING:
USE FITTINGS OR ADAPTORS COMPATIBLE WITH
PORTS SUPPLIED AS SHOWN BY PART NUMBER ON
NAMEPLATE AND NOTED IN DATA SHEETS: USE OF
INCORRECT FITTINGS OR ADAPTORS CAN CAUSE
FILTER HOUSING OR MANIFOLD FAILURE RESULTING
IN LOSS OF PRESSURE AND POSSIBLE SYSTEM
FAILURE OR PERSONAL INJURY.

(a) Ensure that plugs are closed.
(b) Open left hand bleed plug one and one half turns.
(c) Position change-over valve to direct flow through left

hand housing.

for length 08, 563mm (22.2in) for length 13,
734mm (28.9in) for length 20 and 1242mm
(48.9in) for length 40.

be torque tightened to 40-43 ft/lb or 54-58 Nm. All visual
indicators must be clearly visible.

housing inlet and outlet port options.

2

UR229

A

or tag 3

HIGH DIFFERENTIAL PRESSURE

UR229 Series

DUPLEX FILTER ASSEMBLY service instructions

(d) Jog system and fill filter until all air bleeds through the
plug, then tighten plug. Pressurize system fully and
check for leaks; if leaks occur shut down, depressurize,
and repair leak before proceeding. Refer to section 5.2.

(e) Depressurize the system.
(f) Open right hand bleed plug a minimum of one and one

half turns.
(g) Position change-over valve to allow flow through right

hand housing. Jog system and fill filter until all air bleeds
through the plug, then tighten plug.

(h) Fully pressurize and check for leaks, if leaks occur shut
down, depressurize, and repair leak before proceeding.
Refer to section 5.2.

(i) On completion of commissioning, position change-over
valve to select on-line side of housing.

CAUTION:
Failure to bleed the filter housing adequately will
increase the dissolved air content of the system fluid
which will shorten fluid life and may cause other
problems in the system.

5 Routine maintenance

5.1 Pall filters do not normally require special attention
except for periodic monitoring of the differential pressure
warning device. Schedule replacement of filter element
every six months or sooner, and have ample supply of
spare elements available.

5.2 If external leakage is noted, replace O-ring at leak. If
leakage persists, check sealing surfaces for scratches or
cracks; replace any defective parts.

5.3 Differential pressure devices actuate when the element
needs changing or because of high fluid viscosity in
‘cold start’ conditions. If ‘cold start’ conditions exist, see
Section 6.2 and 6.3.

5.4 A dirty system can quickly plug a new filter element,
especially with Pall high efficiency filter media. It may
require one or two initial element changes to stabilize
element life. If element life is short or differential
pressure is excessive, filter may be undersized; refer to
the sizing and selection section of the product literature
or contact your local Pall representative.

6 Differential pressure devices (optional)

Reference should be made to product literature for dimensions,
operating parameters, part numbering, ordering information
and specifications.

6.1 Differential pressure devices actuate when the element
needs changing or because of high fluid viscosity in
‘cold start’ conditions.

6.2 If a visual indicator is fitted and actuates during ‘cold

start’ (red button extends 5mm, 3/16”), reset by
depressing the button when the normal operating
temperature is reached. If indicator actuates after
resetting at normal operating temperature, replace
the element

NOTE: Option ‘P’ visual indicator has thermal lockout
and manual reset. No signal below 0°C (32°F), signal
above 29°C (80°F).

6.3 If the electrical switch actuates (e.g. red light comes on)

during cold start, continue operating until the signal (red
light) goes out as system warms to normal operating
temperature. This feature can be used as ‘warm up’
indication in operating procedures. If the warning signal
(red light) remains or appears when system is warm,
replace the filter element.

6.4 Use of both positive indication (green light) and negative
indication (red light for dirty element) is recommended to
effectively monitor filter element life.

Electrical connections and ratings for all differential
pressure switch options:

110 VAC = 4A (inductive),

220 VAC = 4A (inductive),

28 VDC = 3A (inductive),

48 VDC = 1A (inductive),

125 VDC = 0.25A (inductive),

Maximum inrush - 24 amps.
Underwriter’s lab. Inc. listed ratings of pressure switch

(Microswitch) options are:
4 amps at 250 VAC

0.25 amp resistive at 220 VDC

0.50 amp resistive at 110 VDC

Electrical differential pressure switch operation:

When preset differential pressure is exceeded continuity
switches from ‘C’ - ‘A’ to ‘C’ - ‘B’.

When differential pressure decreases below the pre-set value
continuity returns to ‘C’ - ‘A’.

4A (resistive)

4A (resistive)

5A (resistive)

1.5A (resistive)

0.5A (resistive)

ENGLISH

Figure 1 - Switch Circuit Diagram

or white
or tag 1

B
or red

LOW DIFFERENTIAL PRESSURE

C
or black
or tag 2

7 Filter element 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. Do not service 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 into bypass.

Refer to Pall Product Literature for item numbers for applicable
replacement element series. Remove and replace element as

follows:

WARNING:
FAILURE TO DEPRESSURISE THE FILTER BEFORE
SERVICING ELEMENT COULD RESULT IN EXPLOSIVE
LOSS OF FLUID, DAMAGE TO EQUIPMENT AND
POSSIBLE PERSONAL INJURY.

3

UR229

UR229 Series

DUPLEX FILTER ASSEMBLY service instructions

7.1 Open the bleed plug (5) on the off-line housing cover
a minimum of one and one half turns. Open commuter
valve (2) three full turns to equalize pressure between
the off-line housing and the on-line housing. Close the
commuter valve (2) when a bubble free stream of oil
flows from the bleed plug. Tighten the bleed plug.

7.2 Pull the latching pin and rotate change over valve handle

(7) 180° to bring off-line housing on-line. Insert latching
pin to prevent accidental handle movement.

NOTE: Pointed end of change-over valve handle (7) indicates
the filter housing on-line.

7.3 The off-line housing is now isolated from the system
by the changeover valve. Depressurize the housing by
slowly venting through the bleed plug (5). Remove drain
plug (8) on the filter head and drain fluid into a suitable
container. Discard fluid in accordance with local Health
and Safety regulations. Close drain plugs (5 and 8).

NOTE: During element replacement some small internal
leakage may be noted from the on-line filter housing. If a
large amount of leakage occurs, the ball valve seals may
require adjustment or the check valve seals need servicing.
Check for closure of commuter valve before disassembling
of unit for repairs.

7.4 Manually remove the cover (4) from tube (3). Remove

element (10) and carefully inspect the surface for
significant visible contamination. Normally no dirt should
show but visible dirt or particles can be an early warning
of system component breakdown and can indicate
potential system failure. Discard both the element
and its O-ring in accordance with local Health and
Safety Procedures. The filter element is
NOT CLEANABLE. Any attempt to clean the filter can
cause degradation of the filter medium and allow
contaminated fluid to pass through the filter.

7.5 Inspect filter cover (4) and tube (3) for possible damage

or malfunction and replace if damage is observed.
Remove any accumulated dirt from the filter tube and
cover interior, being careful to prevent contaminant
from entering the outlet and flowing downstream.
DO NOT run the system without a filter element (10)
installed. Inspect the O-rings on the cover (4) for
damage and replace if necessary. Use the correct
replacement filter element (10) part number called for
on assembly nameplate.

7.6 Lubricate element O-ring seal with clean system fluid
and push filter element (10) straight into filter housing.
Ensure that the O-ring end of the element points
towards the head. Ensure the cover (4) and tube (3)
threads are clean and dry. Lightly lubricate cover seal
with clean system fluid. HAND TIGHTEN cover or tube
and cover until it bottoms out.

7.7 Use a torque wrench and tighten cover and tube

assembly to 10-14 FT LBS (13-19 Nm).
Do Not Over Tighten.

WARNING:
FAILURE TO REPLACE DAMAGED PARTS IN THE
FILTER ASSEMBLY CAN CAUSE COMPONENTS IN
THE HYDRAULIC SYSTEM TO FAIL OR DEGRADE IN
THEIR PERFORMANCE.

7.8 Open the bleed plug (5) on the off-line housing cover
one and one half turns. Open commuter valve (2) three
full turns to equalize pressure between the offline
housing and the on-line housing. Close the commuter
valve when a bubble free stream of oil flows from the
bleed plug. Tighten the bleed plug.

7.9 After element change ENSURE VISUAL DIFFERENTIAL
PRESSURE WARNING DEVICE IS RESET BY
PUSHING IN THE BUTTON; electrical devices are
reset automatically. When system reaches normal
operating temperature, check that the electrical switch
has not actuated and/or that visual warning button
remains depressed. If visual indicator actuates due to
a cold start condition, reset indicator as per Section 6.
Filter housing is now ready for change-over when
required.

8 Ball Valve Servicing

Refer to Service Parts List (Section 11 and 12) for item
numbers for seal kits and Pall product literature for
replacement part.

8.1 Completely shut down system and depressurize system
by opening bleed plug (5). Remove drain plug (8) after
depressurizing.

WARNING:
FAILURE TO DEPRESSURISE THE SYSTEM BEFORE
SEVICING UNIT COULD RESULT IN EXPLOSIVE
LOSS OF FLUID. DAMAGE TO EQUIPMENT AND
POSSIBLE PERSONAL INJURY

8.2 With the ball valve handle shaft facing the operator and
the handle pointer pointing to the right side, remove the
right hand Head Assembly.

8.3 Remove in the following order:
(a) Remove Filter Element (10) per section 7.
(b) Remove 4 socket head cap screws (6), loosen 1 hex

head bolt (6.1) and remove the head assembly.
(c) Unscrew retainer seat (14) and O-ring (16) (see Fig. 5).
(d) Remove outer ball seat (17)
(e) Remove ball (19) (Note ball orientation when removing)
(f) Remove inner ball seat (17)
(g) Remove handle from valve shaft (7)
(h) Remove valve shaft (28)

8.4 Replace all O-rings, nylon bar in retainer, ball seats and
valve shaft washer (30). Use appropriate kit per type of
seal. See Ball Valve Seal Kit list.

NOTE: Lubricate all o-rings before installation.

8.5 Install in the following order;
(a) Valve shaft (28) and handle (7), ensure the pointer on the

valve handle points to the disassembled side.
(b) Inner ball seat (17) and O-ring (18).
(c) Orient the ball such that the groove aligns with the key

on the stem of the handle, install ball (19).
(d) Outer ball seat (17) and O-ring (18),
(e) Install Retainer Seat Valve (14), Tighten Retainer Seat

Valve into valve body so that ball cannot move, then
back Retainer off by 1/8 to 1/4 turn to allow for rotation
of ball. (Resistance to ball rotation must be present. Free
rotation is not acceptable).

4