Pall Ultipleat SRT Serie Instrucciones De Servicio página 4

Ultipleat
R E T U R N L I N E F I LT E R S
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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.
Servicing must not be carried out 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 on bypass.
Refer to Service Parts List (Section 10) for item numbers for applicable
replacement element series. Remove and replace element as follows:
7.1 Remove latching pin and shift change over valve handle (10) 180°
to bring off-line housing on-line. Insert latching pin to prevent
accidental movement.
NOTE: Change-over valve handle indicates the filter housing on stream.
7.2 The off-line housing, now isolated from the system by the
change-over valve, is depressurised by slowly venting through the
vent plug (10). Open drain plug (11) and drain fluid into a suitable
container. Discard fluid in accordance with local Health and Safety
regulations. Close drain plug (11) and torque tighten to 12 ft/lb
or 16 Nm.
NOTE: During element replacement some small internal leakage may be noted
from the on-line filter housing.
7.3 Manually unscrew cover handle and remove filter cover assembly
(5) from tube (2). Remove element (8), if already fitted, and
carefully inspect the surface for significant visible contamination.
Normally no dirt should show but visible dirt or particles from the
filter tube (2) interior and filter cover assembly (5) can be an early
warning of system component breakdown and can indicate
potential failure. Discard both the element and its O-rings 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.
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.
7.4 Inspect filter cover assembly (5) and bypass valves for possible
damage or malfunction. Replace filter cover assembly if damage
is observed. Remove any accumulated dirt from the filter tube
interior and cover assembly being careful to prevent contaminant
from entering the outlet and flowing downstream. DO NOT run the
system without a filter element (8) installed. Check the O-rings (6)
on the cover assembly (5) and centre post (3) are not damaged.
Use the correct replacement filter element (8) part number called
for on assembly nameplate.
WARNING:
FAILURE TO REPLACE DAMAGED PARTS IN THE
FILTER ASSEMBLY CAN CAUSE COMPONENTS IN
THE HYDRAULIC SYSTEM TO FAIL OR DEGRADE IN
THEIR PERFORMANCE.
7.5 Lubricate element O-ring seals with clean system fluid and push
filter element (8) straight over the housing centre post. Ensure the
cover assembly (5) and centre post (3) threads are clean and dry.
Lightly lubricate the centre post threads, O-ring seal and cover
assembly seals with clean system fluid. HAND TIGHTEN cover
handle until cover assembly and tube are in contact. O-ring
sealing is not improved by over tightening.
Filter housing is now ready for change-over when required.
SRT
®
UR629/649/669/689 Series
s e r v i c e i n s t r u c t i o n s
WARNING:
DO NOT USE PIPE WRENCH, HAMMER OR ANY
SIMILAR TOOL TO TIGHTEN COVER.
7.6 Open housing vent plug (10), remove latchable pin and shift
change-over valve (14) handle so that system fluid slowly fills
the housing with the newly replaced element.
7.7 Close vent port (10) when bubble free fluid issues from it.
Return change-over valve handle back to latched position.
NOTE: For UR649, UR669 and UR689 units, the above applies to each
housing having elements replaced.
7.8 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 electrical
switch has not actuated and/or that visual warning button remains
depressed. If visual indicator rises due to a cold start condition,
reset again as per Section 6.
8 Fluid sampling
Optimum sampling to verify fluid condition can be achieved by the use
of sampling adaptors installed in place of or in combination with the
differential pressure device. This provides up and downstream 1/4-inch
BSP parallel thread ports to be used for sampling. For more information
consult Pall or your local Pall distributor. Pall offers a fluid contamination
analysis service - consult the Pall sales office.
9 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.
Seller's liability under any warranty is limited solely (in Seller's discretion)
to replacing (FOB original ship point), repairing or issuing credit for
products that become defective during the Warranty Period. Purchaser
shall notify Seller promptly in writing of any claims and provide Seller with
an opportunity to inspect and test the product claimed to be defective.
Buyer shall provide Seller with a copy of the original invoice for the
product, and prepay all freight charges to return any products to Seller's
factory, or other facility designated by Seller. All claims must be
accompanied by full particulars, including system operating conditions,
if applicable.
Seller shall not be liable for any product altered outside of the Seller's
factory except by Seller or Seller's authorized distributor, and then, as to
the latter, only for products which have been assembled by the distributor
in accordance with Seller's written instructions. Nor shall Seller be liable
for a product subjected to misuse, abuse, improper installation,
application, operation, maintenance or repair, alteration, accident
or negligence in use, storage transportation or handling.
In no event will Seller be liable for any damages, incidental, consequential
or otherwise, whether arising out of or in connection with the
manufacture, packaging, delivery, storage, use, misuse, or non use of
any of its products or any other cause whatsoever.
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