background image

UR620/40/60/80

UR620/40/60/80 Series

RETURN LINE FILTERS

s e r v i c e  

i n s t r u c t i o n s

3

ENGLISH

4.8 

 Ensure the valves immediately upstream and downstream of 

the filter assembly are closed. Commission filter assembly as 

follows:

NOTE: For UR640, 660 & 680 units, the following procedure 

applies to each housing.
(a) 

 Ensure that drain and commuter valves are closed.

(b) 

Open left hand housing vent port.

(c) 

 Open commuter valve (three full turns max) purge all air (16).

(d) 

 Position change-over valve to the left, to allow flow through 

left hand housing.

(e) 

  Bleed filter by opening the vent plug (10) on the cover (5) of 

the filter one and one half turns. Jog system and fill filter until 

all air bleeds through the plug (filter can be optionally filled 

using the fill port (12)), then tighten plug. Close commuter 

valve (16). Pressurize system fully and check for leaks; if 

leaks occur refer to section 5.

(f) 

 Open right hand housing vent port and commuter valve.

(g) 

 Open commuter valve (three full turns max) purge all air (16).

(h) 

 Position change-over valve to right, to allow flow through 

right hand housing. Close vent port when bubble free fluid 

issues from port and torque tighten to 12 ft/lb or 16 Nm.  

Close commuter valve (16).

(i) 

 Fully pressurise and check for leaks. If any leak is apparent 

shut down, depressurise and rectify leak before proceeding.

(j) 

 On completion of test sequence, position change-over valve 

to place selected housing on stream.

NOTE: Cover the visual warning device and nameplate if 

painting of the assembly takes place.

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.  Body assembly is permanently 

assembled at the factory: do not attempt to disassemble the 

head (1), body tube (2), center post (3), change-over valve (14) 

or check valve (15).

5.3 

 Differential pressure devices actuate when the filter element 

(8) 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.

5.5 

 Make sure element change labels are clean and undamaged. 

Replace illegible labels with the appropriate new labels.

Differential pressure devices

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 visual indicator is fitted and actuates during ‘cold start’ 

(indicates red), reset by depressing the button when the 

normal operating temperature is reached. If indicator actuates 

after resetting, replace element. 

NOTE: Option ‘P’ visual indicator has thermal lockout and manual 

reset.  

No signal below 0 °C (32 °F), signal above 27 °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), 

4A (resistive)

220 VAC 

 4A (inductive), 

4A (resistive)

28 VDC 

 3A (inductive), 

5A (resistive)

48 VDC 

 1A (inductive), 

1.5A (resistive)

125 VDC 

 0.25A (inductive), 

0.5A (resistive)

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 

Normally Closed (NC) - Common to Normally Open (NO) - Common.

When differential pressure decreases below pre-set value, continuity 

returns to Normally Open (NO) - Common to Normally Closed (NC) - 

Common.

See individual indicator options for connection details.

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.

Figure 1 

- Stainless Steel 

Switch Circuit Diagram

CAUTION:

Continued operation of 620 series bypass filters (valve 

options A, B and G), with differential pressure device 

actuated, can allow unfiltered flow downstream. 

Continued operation of 620 series non-bypass filters 

(valve options W or N may cause collapse or premature 

fatigue failure of the plugged filter element, which could 

allow contaminant and unfiltered flow downstream. 

Refer to element change instructions in section 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.

Servicing must not be carried out when a potentially explosive 

atmosphere is present.

COMMON

NORMALLY 

CLOSED (NC)

NORMALLY 

OPEN (NO)

LOW DIFFERENTIAL PRESSURE

HIGH DIFFERENTIAL PRESSURE

Summary of Contents for UR620 Series

Page 1: ...ge It may be necessary to allow time for the static charge to dissipate before removal Internal static discharge within a charged filter capsule may result in damage to the filter media For further information please contact Pall RECEIPT OF EQUIPMENT WARNING PLEASE CHECK THE PRODUCT LABEL PRIOR TO USE TO ENSURE PRODUCT PART NUMBERS CORRESPOND TO THE APPLICATION a Unpack carefully and check items a...

Page 2: ...lows 4 2 1 443mm or 17 5 for length 20 and 951mm or 37 5 for length 40 assemblies 4 2 2 The UR6xx Housings are 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 Each UR620 housing is suppli...

Page 3: ...ressure devices 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 visual indicator is fitted and actuates during cold start indicates red reset by depressing the button wh...

Page 4: ... 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 u...

Page 5: ...be 2 5 Cover assembly 2 6 O rings not shown 7 Differential Pressure indicator 8 Filter element 2 9 Indicator plug ports 2 10 Vent plug 1 4 SAE J514 2 11 Bleed drain plug 1 2 SAE J514 4 12 Fill plug 1 2 SAE J514 not shown 2 13 Mounting bracket kit not shown 1 14 Change over valve including commuter valve 1 15 Check valve 1 16 Commuter valve not shown 1 UR620 40 60 80 UR620 40 60 80 Series ...

Page 6: ...6 Figure 2 UR620 shown RETURN LINE FILTERS service instructions 12 12 12 12 10 9 4 8 5 2 9 11 15 14 UR620 40 60 80 UR620 40 60 80 Series ...

Page 7: ...ind dybde AA 4 taladros pasantes roscados Profundidad AA 4 täyskierteistä reikää syvyys AA 4 trous taraudés de profondeur AA 4 fori completamente filettati profondità AA 4 tapgaten met draad over volle diepte 4st fästhål Gänga Z Min gängdjup AA GG Q Flange Connection Details Flange Code Nominal Tube Size GG Q Z Thread AA E20 11 4 1 250 2 625 1 2 13 UNC 0 75 G20 11 4 31 8 mm 66 7 mm M12 x 1 75 19 m...

Page 8: ...r area please go to www pall com contact Because of technological developments related to the products systems and or services described herein the data and procedures are subject to change without notice Please consult your Pall representative or visit www pall com to verify that this information remains valid Copyright 2016 Pall Corporation Athalon Pall and are trademarks of Pall Corporation Ind...

Reviews: