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F64B, F64L Ultra high efficiency coalescing filter 
Installation & Maintenance Instructions

Our policy is one of continued research and development. We therefore reserve the right to amend,  

without notice, the specifications given in this document. (1999 - I&M8076c) © 2015 IMI International s.r.o.

I&M/en 8.240.115.02

 

3/19

  coalescing element (46, 50) will need  
  renewing if pressure drop becomes excessive.  
  It is not designed to be cleaned. Replace  
  carbon pack (8) with new element if  
  discoloured due to oil adsorption. When  
  replacing or renewing top element, wipe main  
  filter body thoroughly to remove alltraces of oil  
  and renew o-ring. If top element becomes  
  saturated with oil in a short period, the main  
  element or o-ring may be faulty and should 
  be replaced. Clean plastic bowl (31, 40) with  
  warm water only. Clean other parts with warm  
  water and soap. 2. Rinse and dry parts. Blow  
  out internal passages in body with clean, dry  
  compressed air. 3. Inspect parts. Replace  
  those found to be damaged. Replace plastic  
  bowl with a metal bowl if plastic bowl shows  
  signs of cracking or cloudiness.

Assembly

1. Lubricate o-rings with o-ring grease.
2. Assemble the unit as shown on the exploded  
 view.
3. Turn bowl or bowl with guard (14, 21, 28, 37)  
  fully clockwise into body.

Caution

Water vapor will pass through these units and 
could condense into liquid form downstream as 
air temperature drops. Install an air dryer if water 
condensation could have a detrimental effect on 
the application.

WARNING

Polycarbonate plastic bowls can be damaged 
and possibly burst if exposed to such  
substances as certain solvents, strong  
alkalies, compressor oils containing ester-based 
additives or synthetic oils. Fumes of these 
substances in contact with the polycarbonate 
bowl, externally or internally, can also result in 
damage. Clean with warm water only.
Use metal bowl in applications where a plastic 
bowl might be exposed to substances that are 
incompatible with polycarbonate.
Before using these products with fluids other 
than air, for non industrial applications, or for 
life-support systems consult Norgren.

Use in potentially explosive atmospheres

Code of device according EC directive
2014/34/EU
      II 2G Ex h IIC T6 Gb
      II 2D Ex h IIIC T85ºC Db
• Only non-flammable gasese to be used as a  
 medium.
• Surface temperature dependant on process  
  fluid temperature and ambient temperature -  
  must be below the ignition temperature of the  
  flammable gas or dust.
• Earth unit and/or pipework to avoid  
  electrostatic discharge.
• Precautions should be taken to prevent hazard  
  from adiabatic compression. 
• Use wet cloth for cleaning.
• Protect the unit from object falling onto it.
• Avoid contact with corrosive environment.
• For servicing the unit it is recommended to  
  carry out this work outside of the danger  
 zone.
• For details of ignition hazard assessment  
  contact Norgren.

42

44

43

8

9

1

2

5

6

3

11

49

48
47

46

10

12

15

19

38

39

40

41

16

17
20

18

45

13

54

53

52
51

50

29

30

35

32

33
36

31

34

22

24

26

25

23

27

4

14

21

28

37

7

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