7.2 Unscrew and remove filter cover/adaptor assembly
(2) from head (1) counterclockwise when viewed from
above. It may be necessary to use a 24mm wrench on
the hexagon on the filter cover assembly (2) to loosen
the cover initially. Check that the O-rings are not
damaged.
7.3 The cover/adaptor assy will pull the elements and
canister from the filter unit. Hold the canister and
adaptor to remove the element from the canister, then
hold the element and adaptor to remove the element
from the adaptor.
7.4 Dump remaining fluid from canister into a container.
Lubricate the element O-rings with clean system fluid.
Install new element into canister and seat into bottom
of canister.
7.5 Install adaptor into element. Then install canister/cover
assy into head. Thoroughly clean the cover threads.
Thread cover into head to seal unit. HAND TIGHTEN
ONLY.
7.6 Carefully inspect the surface of the removed filter
element 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-rings. 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.
7.7 DO NOT run the system without a filter element installed.
Use replacement filter element part number called for on
the element change label.
7.8 After starting the system check for leaks as per section
5.2. When system reaches normal operating
temperature, check that the pressure gauge shows
pressure in the normal operating range.
3
5
Routine maintenance
5.1 Pall filters do not normally require special attention
except for periodic monitoring of the pressure gauge.
We recommend scheduled 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 The pressure gauge will indicate 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
Pressure gauge
6.1 The pressure gauge will indicate when the element
needs changing or because of high fluid viscosity in
‘cold start’ conditions.
6.2 If a pressure gauge is fitted and shows high pressure
during ‘cold start’ conditions, check that the pressure
returns to a ‘normal’ reading when the normal operating
temperature is reached. If the gauge continues to show
high pressure after system warm-up, replace the filter
element.
ENGLISH
T200
T200 Series
RETURN LINE IN-TANK FILTERS
s e r v i c e
i n s t r u c t i o n s
7
Filter element servicing
During servicing, the external surfaces of the filter assembly
must be cleaned to remove any dirt.
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.
WARNING:
FAILURE TO DEPRESSURISE THE FILTER
BEFORE SERVICING ELEMENT COULD RESULT
IN EXPLOSIVE LOSS OF FLUID, DAMAGE TO
EQUIPMENT AND POSSIBLE PERSONAL INJURY.
WARNING:
DO NOT ATTEMPT TO CLEAN OR RE-USE THE
ELEMENT.
ONLY USE GENUINE PALL REPLACEMENT FILTER
ELEMENTS. USE OF SUBSTITUTE ELEMENTS MAY
INVALIDATE PRODUCT WARRANTY.
CAUTION:
Filter elements should be replaced upon high
differential pressure or at specified intervals, six
months maximum is recommended. Failure to change
the element will cause the filter to go on bypass.
