IMI NORGREN Micro-Fog L68C Series Installation and operating instructions

RECOMMENDED LUBRICANTS
Fill reservoir with a good quality, light, misting type oil for
compressed air tools. See our publication
N/AL.8.900.935.
FILL RESERVOIR (OIL-FOG LUBRICATORS)
Remove fill plug (14), add oil, and reinstall fill plug. Fill
plug can be removed and oil added without shutting off air
pressure to the lubricator. Oil level must always be visible
in lens on metal reservoirs. DO NOT OVERFILL.
FILL RESERVOIR (MICRO-FOG LUBRICATORS)
Shut off inlet air pressure and reduce pressure in reservoir
to zero. Remove fill plug (14), add oil, and reinstall fill plug.
Do not remove the fill plug when the reservoir is
pressurized, as oil will blow out the fill plug hole.
Micro-fog lubricators can be filled under pressure only if
equipped with the optional quick fill cap (16), which
requires a quick fill connector and oil pump. Oil level must
always be visible in lens on metal reservoirs. DO NOT
OVERFILL.
ADJUSTMENT
1. Turn on system pressure.
2. Adjust lubricator drip rate only when there is a constant
rate of air flow thru the lubricator. Monitor drip rate thru
sight feed dome (9).
3. Oil-Fog Lubricators - Oil-fog lubricators are equipped
with a green lockring on sight-feed dome (9). Determine
the average rate of flow thru the lubricator. Turn knob (9)
to obtain one drop per minute for each 5 dm3/s (10
scfm). For example, if the average flow is 19 dm3/s (40
scfm), set the drip rate at 4 drops per minute. Turn knob
counterclockwise to increase and clockwise to decrease
the drip rate. Push green lockring down to lock drip rate
setting; pull up to release.
4. Micro-Fog Lubricators - Micro-fog lubricators are
equipped with a red lockring on sight-feed dome (9).
Determine the average rate of flow thru the lubricator.
Turn knob (9) to obtain the recommended drops per
minute. See Drip Rate Chart. Turn knob
counterclockwise to increase and clockwise to decrease
the drip rate. Push red lock-ring down to lock drip rate
setting; pull up to release.
Drip Rate Chart for Micro-Fog Lubricators
Flow - dm3/s (scfm) Drops per Minute
5 (10) 10
12 (25) 14
24 (50) 21
35 (75) 28
47 (100) 35
59 (125) 41
71 (150) 47
83 (175) 54
94 (200) 60
106 (225) 66
118 (250) 73
130 (275) 80
5. Monitor the device being lubricated for a few days
following initial adjustment. Adjust the drip rate if the oil
delivery at the device appears either excessive or low.
6. Drip rate setting can be made tamper resistant by
installing a seal wire (see Replacement Items) in groove
above lock-ring.
DISASSEMBLY
1. Shut off inlet pressure. Reduce pressure in inlet and
outlet lines to zero. Loosen fill plug (14).
2. Unscrew the clamp ring and remove lubricator from
yoke.
3. Disassemble in general accordance with the item
numbers on exploded view. Do not remove the drains
(40, 44), plug (50), remote fill (51) unless malfunction
occurs and replacement is necessary. Do not remove
sensor and retainer (3, 3A, 7, 7A), siphon tube (55), fog
generator (57), check valve (59) unless lubricator
malfunctions and replacement is necessary.
CLEANING
1. Clean parts using warm water and soap.
2. Dry parts. Blow out internal passages in body with clean,
dry compressed air.
3. Inspect parts. Replace parts found to be damaged.
TECHNICAL DATA
Fluid: Compressed air
Maximum pressure: 17 bar (250 psig)
Operating temperature*: -20° to +80°C (0° to +175°F)
* Air supply must be dry enough to avoid ice formation at
temperatures below +2°C (+35°F).
Start point (i.e. minimum flow required for lubricator
operation) at 6,3 bar (90 psig) inlet pressure:
Micro-Fog: 6 dm3/s (13 scfm)
Oil-Fog: 6 dm3/s (13 scfm)
Typical flow at 6,3 bar (90 psig) inlet pressure and 0,5 bar
(7 psig) pressure drop:
Micro-Fog: 200 dm3/s (424 scfm)
Oil-Fog: 187 dm3/s (396 scfm)
Nominal bowl sizes:
0,5 litre (1 pint US)
1 litre (1 quart US)
8 litre (2 gallons US)
20 litre (5 gallons US)
Recommended lubricants: See page N/AL.8.900.935
Materials:
Body: Aluminium
Yoke: Aluminium
Bowl, 0,5 litre (1 pint US) and 1 litre (1 quart US):
Aluminium
Bowl sight glass: Pyrex
Reservoirs, 8 litre (2 gallons US) and 20 litre (5 gallons
US): Steel
Reservoir sight tube: Polythene
Elastomers: Synthetic rubber
REPLACEMENT ITEMS
Service kit (items circled on exploded view)
Micro-Fog models ..............................................4382-301
Oil-Fog models ...................................................4382-300
0.5 litre bowl liquid level lens (19 thru 27) ............4380-060
1 litre bowl liquid level lens (30 thru 38) ...............4380-061
Manual drain, spindle type (44) .................................684-84
Manual drain, 1/4 turn (40)........................................619-50
Tamper resistant wire (pack of 10) ..........................2117-01
INSTALLATION
1. Install yoke in air line -
●with air flow in direction of arrow on top of yoke,
●upstream of cycling valves,
●as close as possible to the device being lubricated,
●Oil-Fog Models - Not more then 5.2 m (15 feet) from the
device being lubricated, and at the same height or higher
than the device.
2. Connect piping to yoke ports using pipe thread sealant on
male threads only.
3. Lubricate o-rings (2, 6) with a light coat of o-ring grease,
then place o-rings in grooves in body (1, 5).
4. Place clamp ring under lugs on top of yoke.
5. Make sure arrows on yoke and regulator point in same
direction, then plug lubricator into yoke and tighten clamp
ring hand tight.
6. Turn bowl into body until arrowhead on bowl is aligned
with or to the right of the arrowhead on the body.
53
52
51
54
41 46
43
45
42
47
40 44
48
50
49
9
11
10
13
12
17
16
15
14
Micro-Fog Body Oil-Fog Body
5
60
61
59
8
56
55
1
4
2
56
55
58
57
29
32
32
31
30
36
37
35
31
30
33
39
34
33
38
18
28
19
25
26
24
21
22
19
21
20
20
23
22
27
7
7A
6
3
3A
L68★ - ★★★ - ★★★
Yoke Port Size
6.....3/4"
8.....1"
A ....1-1/4"
B ....1-1/2"
N ....No yoke
Thread Type
A ....PTF
B ....ISO Rctapered
G ....ISO G parallel
N ....No yoke
Bowl
C...1 litre (1 quart U.S.), No liquid level indicator
M ..0,5 litre (1 pint U.S.), No liquid level indicator
R...0,5 litre (1 pint U.S.), With liquid level indicator
U...1 litre (1 quart U.S.), With liquid level indicator
Type
P...Unidirectional
Drain
E ...Closed bottom
M ..Manual, spindle type
Q...Manual, 1/4 turn
R...Remote fill
Options
N...None
Q...Quick fill nipple
Type
C...Oil-Fog
M ..Micro-Fog
L68C, L68M - Micro-Fog® and Oil-Fog Tool Lubricators
Installation & Maintenance Instructions
IM-260.400.01 (5/01
Our policy is one of con inued research and developmen . We herefore reserve he righ o amend, wi hou no ice,
he specifica ions given in his documen . © 2001 Norgren, Inc.

ASSEMBLY
1. Lubricate o-rings, the portion of the plug (50) and manual
drain body (43) that contacts the bowl, and the hole in the
manual drain body that accommodates the stem of drain
valve (41) with o-ring grease.
2. Assemble lubricator as shown on exploded view.
3. Insert sensor (3, 7) into retainer (3A, 7A), then orient as
shown and press fully into bore. When fully seated, the
sensor/retainer is centered between the inlet and outlet
ports.
4. Assemble the liquid indicator parts (19 thru 26, 30 thru
37) to reservoir. Apply a 0.9 to 1.8 kg (2 to 4 pound)
clamping force to upper and lower sight glass brackets
(20, 31). Tighten screws (19, 30).
5. Torque Table N-m (Inch-Pounds)
9, 12 (Dome) 2,0 to 2,8 (18 to 25)
19, 30 (Screw) 1,8 to 2,3 (16 to 20)
45, 52 (Nut) 2,3 to 2,8 (20 to 25)
57, 59 (Fog generator, check valve) 2,3 to 2,8 (20 to 25)
6. Turn bowl into body until arrowhead on bowl is aligned
with or to the right of the arrowhead on the body.
WARNING
These products are intended for use in industrial
compressed air systems only. Do not use these products
where pressures and temperatures can exceed those listed
under Technical Data.
In lubrication applications some oil mist may escape from
the point of use to the surrounding atmosphere. Users are
referred to safety and health standards for limiting oil mist
contamination and utilization of protecting equipment
Before using these products with fluids other than air, for
nonindustrial applications, or for life-support systems
consult IMI Precision Engineering.
53
52
51
54
41 46
43
45
42
47
40 44
48
50
49
9
11
10
13
12
17
16
15
14
Micro-Fog Body Oil-Fog Body
5
60
61
59
8
56
55
1
4
2
56
55
58
57
29
32
32
31
30
36
37
35
31
30
33
39
34
33
38
18
28
19
25
26
24
21
22
19
21
20
20
23
22
27
7
7A
6
3
3A
L68C, L68M - Micro-Fog® and Oil-Fog Tool Lubricators
Installation & Maintenance Instructions
IM-260.400.02 (5/01)
Our policy is one of con inued research and developmen . We herefore reserve he righ o amend, wi hou no ice,
he specifica ions given in his documen . © 2001 Norgren, Inc.