Chicago Pneumatic AF LF 1/4 Operator's Manual

EN English (English)
1. Introduction
When using pneumatic tools, safety in the work place is important. Working with compressed air can lead to damages, like whiplash effect in the event of a failure in the airline network, most
commonly caused by accidental hose cuts or wrong accessory connections. Adding an Air Fuse to your airline set-up can help prevent hose whiplash. When a hose breaks or connections fail,
the piston inside the Air Fuse automatically stops the airflow (see schema below):
When an Air Fuse shuts off, a very small amount (<0.3 bars) of air is still going through the valve.
After a shut off situation is resolved, the Air Fuse is automatically reset. Utilizing an Air Fuse also meets OSHA requirement 1926.302 (USA) and may eliminate the need for a restraining or
shielding hose, as required by the European Standard.
2. Technical Data
Operating Conditions
Pressure 90 psi (6.3 bars)
Maximum 234 psi (16 bars)
Temperature from -20°C (-4°F) to +80°C
(+176°F)
3. Choosing an Air Fuse
The Air Fuse should always be selected according to three values:
• Maximum tool air consumption (see catalog value).
• Hose diameter and length.
• Airline thread type.
Step 1
Tool max. air con-
sumption @ 6.3
bars / 90 psi
cfm I/s 1/4"
(5 mm)
AF LF 1/4 13 6 16.4 ft
(5 m)
AF HF 1/4 21 10 -
AF LF 3/8 30 14 -
AF HF 3/8 51 24 -
AF HF 1/2 74 35 -
AF HF 3/4 127 60 -
AF LF 1 148 70 -
AF HF 1- 1/2 423 200 -
If both low flow (LF) & high flow (HF) are compatible after step 2, always select HF model.
4. Installation
Refer to the instructions on the product and fix it between the Filter Regulator Lubricator (FRL) and the hose:
FRL Hose
Additional instructions:
• Always use one Air Fuse for one Tool.
• If you are dealing with a long hose, use two Air Fuses to protect each hose section.
5. Before Use
WARNING: Always check the installation before use: disconnect the tool, secure the hose end, and open the air supply. Turn air supply slowly to avoid decompression effects. The Air Fuse has
to shut off the flow. If the Air Fuse does not shut off, try these three solutions:
• Reduce Hose length,
• Increase Hose diameter,
• Replace high flow Air Fuse by a low flow Air Fuse type.
6. Maintenance
Routine maintenance must be done every 6 months if the FRL is used, every 2 months if no FRL. The routine consists of checking the Air Fuse by simulating hose failure (see above instruc-
tions). If the Air Fuse does not shutt off, it should be replaced.
Original Instructions
Operator's Manual
Components and Material
Body
Valve and Internal Parts
Spring
Inside hose diameter (mm) / Hose maximum lenght protected (m)
1/4" 5/16" 3/8" 7/16"
(6.5 mm) (8 mm) (10 mm) (11 mm)
49.2 ft 65.6 ft -
(15 m) (20 m)
16.4 ft 49.2 ft -
(5 m) (15 m)
29.5 ft 49.2 ft 65.6 ft
(9 m) (15 m) (20 m)
26.2 ft 49.2 ft
(8 m) (15 m)
© Copyright 2021, Chicago Pneumatic Tools
Normal Operation
Shut-off Situation
Black Anodised Aluminium
Brass
Stainless Steel
Step 2
1/2" 5/8" 3/4"
(13 mm) (16 mm) (20 mm)
65.6 ft
(20 m)
65.6 ft
(20 m)
49.2 ft 65.6 ft
(15 m) (20 m)
49.2 ft 65.6 ft
(15 m) (20 m)
32.8 ft 65.6 ft
(10 m) (20 m)
Air Fuse
Step 3
Airline Thread Type
1" BSP NPT
(25.4 mm)
6158112420 6158112450
110402 6158112460
110422 6158112470
110432 6158112480
110442 6158112490
6158112430 6158112500
6158112440 110542
65.6 ft 8940176815
(20 m)
1