2
1
Specifications
Housing materials:
Head and Cover:
Ductile cast iron
Tube: Carbon
steel
Maximum operating pressure:
420 bar (6,100 psi)
Proof pressure:
750 bar (10,875 psi)
Typical burst pressure:
1,500 bar (21,750 psi)
Element collapse pressure:
UE211 element 210 bard (3000 psid) differential minimum
Operating temperature range:
-29 °C to 120 °C (-20 °F to 250 °F) with fluorocarbon
seals for petroleum based and specified synthetic fluids
60 °C (140 °F) maximum in HWCF, water-oil emulsion
or water glycol
Bypass valve setting options:
No by-pass
Seals:
Fluorocarbon
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 or an 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 packaging to 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 IMUH231EN
3.2
This equipment has been assessed in accordance with
the guidelines laid down in the European Pressure
Directive 97/23/EC and has been classified within sound
engineering practice S.E.P. We hereby declare the
equipment meets the requirements of article 3, section
3, thus meeting the directive requirements. Under the
provisions of this directive the filter assembly is suitable
for use with group 2 fluids only.
3.3
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 assembly 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 (UH231 series is cap service).
4.2
The minimum clearance required for element removal
is as follows:
4.2.1 349 mm (13.8 in) for length 13 and 519 mm (20.5 in) for
length 20 housings.
4.2.2 The UH231 filter housing is supplied without a filter
element. For filter element installation and servicing
procedures, refer to Section 7.
4.3
Threaded differential pressure devices, when fitted,
must be torque tightened up to 38 ft/lb or 54 Nm.
All visual indicators must be clearly visible.
NOTE: The UH231 filter head is supplied with two machined
differential pressure warning device ports, one fitted with a
blanking plug, the other with a plastic shipping plug. If no
differential pressure warning device is ordered, the shipping
plug must be removed and replaced with a ‘B’ type blanking
plug (P/N HA9000A104Z) and torque tightened up to 38 ft/lb
or 54 Nm.
NOTE: Never install the port plug in the port without first
installing uniform size -014 O-ring 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 in position using four 9 mm /
0.35 inch bolts in the holes on the head mounting pads.
Torque bolts to 9-19 ft/lb or 12-26 Nm.
4.5
Use a check valve downstream of the filter if there is a
possibility of reverse flow.
4.6
Install the filter assembly using additional piping/valving to
allow complete filter assembly bypass if filter maintenance
is required without system shutdown. This series is not
available in a duplex or service bypass configuration.
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 electronically
isolated from the users earthing system. This filter assembly
must be earthed by connecting the users earthing system to
one of the inlet/outlet connections.
4.7
Connect lines or hoses to housing inlet and outlet ports.
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 of the housing takes place.
CAUTION:
Maximum surge flow should not exceed 1.3 times
normal flow.
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.
CAUTION:
Reverse flow through filter element will cause damage.
CAUTION:
Never operate the filter assembly unless both warning
device ports are sealed.
UH231
UH231 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
