Installation; Functional Description - Makita AN250HC Instruction Manual

39. Never connect tool to compressed air line where
the maximum allowable pressure of tool cannot
be exceeded by 10 %. Make sure that the
pressure supplied by the compressed air system
does not exceed the maximum allowable pressure
of the fastener driving tool. Set the air pressure
initially to the lower value of the recommended
allowable pressure.
40. Do not attempt to keep the trigger contact element
depressed with tape or wire. Death or serious
injury may occur.
Always check contact element as instructed in this
•
manual. pins may be driven accidentally if the
safety mechanism is not working correctly.
SAVE THESE INSTRUCTIONS.

INSTALLATION

Selecting compressor
(L/min)
120
110
100
90
80
70
60
50
40
30
20
10
0
0 5 10
Nailing frequency (times/min.)
010441
The air compressor must comply with the requirements
of EN60335-2-34.
Select a compressor that has ample pressure and air
output to assure cost-efficient operation. The graph
shows the relation between pin-driving frequency,
applicable pressure and compressor air output.
Thus, for example, if pin driving takes place at a rate of
approximately 15 times per minute at a compression of
1.76 MPa (17.6 bar), a compressor with an air output
over 70 liters/minute is required.
Pressure regulators must be used to limit air pressure to
the rated pressure of the tool where air supply pressure
exceeds the tool's rated pressure. Failure to do so may
result in serious injury to tool operator or persons in the
vicinity.
Selecting air hose
Fig.1
Use a high pressure resistant air hose.
Use an air hose as large and as short as possible to
15 20 25 30
assure continuous, efficient pin-driving operation.
CAUTION:
Low air output of the compressor, or a long or
•
smaller diameter air hose in relation to the
pin-driving frequency may cause a decrease in the
driving capability of the tool.
Lubrication
Fig.2
To insure maximum performance, install an air set (oiler,
regulator, air filter) as close as possible to the tool.
Adjust the oiler so that one drop of oil will be provided for
every 30 pins.
Fig.3
When an air set is not used, oil the tool with pneumatic
tool oil by placing two or three drops into the air fitting.
This should be done before and after use. For proper
lubrication, the tool must be fired a couple of times after
pneumatic tool oil is introduced.

FUNCTIONAL DESCRIPTION

CAUTION:
Always disconnect the air hose before adjusting or
•
checking function on the tool.
Adjusting the pin-driving depth
CAUTION:
Always disconnect the hose before adjusting the
•
pin-driving depth.
Fig.4
Fig.5
If pins are driven too deep, turn the adjuster clockwise. If
pins are driven too shallow, turn the adjuster
counterclockwise.
The adjustable range is 10 mm. (One full turn allows 0.8
mm adjustment.)
Hook
CAUTION:
Always disconnect the hose when hanging the tool
•
using the hook.
Never hang the tool on a waist belt or like.
•
Dangerous accidental firing may result.
Fig.6
The hook is convenient for hanging the tool temporarily.
This hook can be installed on either side of the tool.
When changing the installation position, remove the
screw with a screwdriver. Install the hook on another
side for installation and then secure it with the screw.
Install the hook on another side for installation and then
secure it with the screw.
7