2
RETURN LINE FILTERS
s e r v i c e
i n s t r u c t i o n s
Athalon
®
UR629/649/669/689 Series
1 Specifications
Housing materials:
Head, tube, manifold
and check valve:
Aluminium Alloy
Cover:
Cast iron
Maximum operating pressure:
28 bar (400 psi)
Proof pressure:
42 bar (609 psi)
Minimum burst pressure:
145 bar (2100 psi)
Element collapse:
UE610 element 10 bard (150 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:
1.7 ± 0.3 bard (25 ± 5 psid) cracking pressure
4.5 ± 0.3 bard (65 ± 5 psid) cracking pressure
Non bypass
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 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
IMUR629EN.
3.2 This equipment has been assessed in accordance with
the guidelines laid down in the European Pressure
Directive 2014/68/EU and has been classified within
sound engineering practice S.E.P. We hereby declare
the equipment meets the requirements of article 4,
paragraph 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.4.1
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.
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.
4.2 The minimum clearance required for element removal of
is as follows:
4.2.1 443mm or 17.5” for length 20 and 951mm or 37.5”
for length 40 assemblies.
4.2.2 The UR629 Housing is supplied without a filter
element. For element installation and servicing
procedures, refer to Section 7.
4.3 Threaded differential pressure devices, when fitted, must
be torque tightened to 30-33 ft/lb or 40-45 Nm. All visual
indicators must be clearly visible.
NOTE: The UR629 housing is supplied with two machined
differential pressure warning device ports, one fitted with
a bleed 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 HA9000-P8-Kit Z) and torque tightened to 40 ft/lb
/54 Nm.
NOTE: Never place the port plug in this 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 using the four 14.3 mm diameter
holes in the manifold assembly.
4.5 Use a check valve downstream of the filter if there is a
possibility of reverse flow.
4.6 Install the filter housing using additional piping/valving
to allow complete filter assembly bypass if filter
maintenance is required without system shutdown.
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 unless both warning device
ports are sealed.
