Norgren Micro-Fog L73M Installation and operating instructions

L73M, L73C
Installation & Maintenance
Instructions
TECHNICAL DATA
Fluid: Compressed air
Maximum pressure:
Transparent bowl: 10 bar (150 psig)
Metal bowl: 17 bar (250 psig)
Operating temperature*:
Transparent bowl: -20° to +50°C (0° to +125°F)
Metal bowl: -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 (minimum flow required for lubricator
operation) at 6,3 bar (90 psig) inlet pressure:
0,71 dm3/s (1.5 scfm)
Maximum recommended flow: 28 dm3/s (60 scfm). Air
flows above 28 dm3/s (60 scfm) create excessive air
velocity, turbulence, and pressure losses. In addition,
the fog produced by the lubricator will wet out on the
pipe walls and will not be carried by the compressed
air to the point of application.
Typical flow with 6,3 bar (90 psig) inlet pressure and 0,5
bar(7psig) pressure drop:
Oil-Fog models: 75 dm3/s (158 scfm)
Micro-Fog models: 65 dm3/s (138 scfm)
Nominal bowl size: 0,1 litre (3.5 fluid ounce)
Manual drain connection: 1/8"
Materials:
Body: Aluminum
Bowl:
Transparent: Polycarbonate
Transparent with guard: Polycarbonate, steel guard
Metal: Aluminum
Metal bowl liquid level indicator lens: Transparent
nylon
Sight-Feed dome: Transparent nylon
Elastomers: Neoprene and nitrile
REPLACEMENT ITEMS
Service kit (includes items circled on
exploded view)...........................................................4382-600
Liquid level lens kit (43, 45, 46, 47)..........................4380-020
Manual drain (18, 19, 20)..................................................619-50
INSTALLATION
1. Shut-off air pressure. Install lubricator in air line -
lvertically (reservoir down),
lwith air flow in direction of arrow on body,
ldownstream of filters and regulators
lupstream of cycling valves,
las close as possible to the device being lubricated,
lOil-Fog Models - Not more than 5,2m (15 feet) from
the device being lubricated, and at the same height
or higher than the device.
2. Connect piping to proper ports using pipe thread
sealant on male threads only. Do not allow sealant to
enter interior of unit.
3. Push reservoir, or reservoir with guard, into body and
turn fully clockwise before pressurizing.
RECOMMENDED LUBRICANTS
Fill reservoir with a good quality, light, misting type oil
for compressed air tools. See Norgren publication N/
AL.8.900.935. Fill to maximum fill line on transparent
reservoirs. Oil level must always be visible in lens on
metal reservoirs. DO NOT OVERFILL.
FILL RESERVOIR OILFOG LUBRICATORS
Remove fill plug (2), add oil, and reinstall fill plug. Fill
plug can be removed and oil added without shutting off
air pressure to the lubricator.
NOTE: Oil fill plug (2) seals easily. Tighten finger-tight
only.
L73C/MExpldView08/97
49
1
6
7
8
9
2
3
4
17
27
36
46
44
43
47
39
38
41
42
30
29
32
28
33
34
35
20
19
22
18
23
31
33A
21
23A
40
42A
51
50
52
53
54
55
5
45
48
24
25
26
37
Micro-Fog® and Oil-Fog
Tool Lubricators
L73 * - * * * - * * *
Thread Form
A.... PTF
B.... ISO Rc taper
G... ISO G parallel
Bowl
D... Metal with plastic liquid level
indicator
P.... Transparent with guard
R.... Metal with Pyrex liquid level indicator
Options
N... None
P.... Pyrex sight-feed dome
Q... Quick fill nipple
Drain
E.... Closed bottom
Q... Manual, 1/4
turn
Air Flow Direction
P.... Uni-directional
Type
C.... Oil-Fog
M... Micro-Fog
Port
2.... 1/4"
3.... 3/8"
4.... 1/2"
IM-180.400.01 (9/98)
Supersedes 4/98
a subsidiary of IMI plc
© Norgren 1998
T.... Transparent

L73M, L73C
Installation & Maintenance
Instructions
FILL RESERVOIR MICROFOG LUBRICATORS
Shut off inlet air pressure and reduce pressure in
reservoir to zero. Remove fill plug (2), 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 (4),
which requires a quick fill connector and oil pump.
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 (6).
3. Oil-Fog Lubricators - Determine the average rate of
flow thru the lubricator. Turn slotted green rotator in
sight feed dome (6) 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 rotator counterclockwise to increase
and clockwise to decrease the drip rate. Total travel of
rotator is 320°.
4. Micro-Fog Lubricators - Determine the average rate of
flow thru the lubricator. Turn slotted red rotator in
sight feed dome (6) to obtain the recommended
drops per minute. See Drip Rate Chart. Turn rotator
counterclockwise to increase and clockwise to
decrease the drip rate. Total travel of rotator is 320°.
Drip Rate Chart for Micro-Fog Lubricators
Flow - dm3/s (scfm) Drops per Minute
2 (5) 3
5 (10) 4
10 (20) 7
15 (30) 9
20 (40) 12
25 (50) 15
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.
DISASSEMBLY
1. Shut off inlet pressure. Reduce pressure in inlet and
outlet lines to zero. Loosen fill plug (2).
2. Remove reservoir - push into body and turn
counterclockwise.
3. Disassemble in general accordance with the item
numbers on exploded view. Do not remove the
manual drain unless replacement is necessary.
Remove and replace drain assembly only if drain
malfunctions. Do not remove siphon tube (49).
Remove and replace items 50 thru 55 only if lubricator
malfunctions. O-ring (55) is only used on Micro-Fog
lubricators.
CLEANING
1. Clean plastic reservoir with warm water only. Clean
other 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. If
plastic reservoir shows signs of cracking or cloudiness,
replace with a metal reservoir.
ASSEMBLY
1. Lubricate o-rings, the portion of the manual drain
body (18, 28, 37) that contacts the bowl, and the hole
in the manual drain body that accommodates the
stem of drain valve (19, 29, 38) with o-ring grease.
2. Assemble lubricator as shown on exploded view.
3. Torque Table N-m (Inch-Pounds)
2 (Fill Plug), 4 (Quick-fill cap) 1,1 to 1,6 (10 to 14)
6, 8 (Dome) 2,3 to 2,8 (20 to 25)
43 (Screw) 1,7 to 3,4 (15 to 30)
50 (Screw) 2,0 to 2,5 (18 to 22)
4. Push reservoir, or reservoir with guard, into body and
turn fully clockwise.
IM-180.400.02 (9/98)
Supersedes 4/98
a subsidiary of IMI plc
© Norgren 1998