6
1)Before changing bits from MYR Series screwdriver, make sure the Forward / Reverse switch stays at
“OFF” position.
The screwdriver must be unplugged.
2)
To avoid damaging the housing of screwdriver, do not allow chemicals get in touch with housing of screwdriver.
Ex.: Acetone, benzene, thinner, trichloroethylene ketone, and other similar chemicals.
3) Use screwdriver carefully, do not drop or abuse. It would be better to use with the spring balancer. If without spring
balancer, you can place the screwdriver in the suspension rack.
4) Assemble / disassemble bits: Only use fingers pull up the bit sleeve to release bits. ; Place back the bit sleeve to
lock the bit holder.
Attention: Make sure the power is off, or the Forward / Reverse switch stays at “OFF” position when assemble or
disassemble bits.
5)Connect the plug to the socket. Attention: It will cause an electric shock if the plug or the hand is wet.
6)You can adjust the torque by the torque adjusting ring. The number on the scale is not equal to the real torque,
please refer to our torque range chart, or test the torque by our torque meter.
Attention: Do not adjust the torque setting higher than 8 on the torque scale.
7) a) MYR Series Trigger Start Type screwdriver: When fasten a screw, please set Forward / Reverse
Switch
to “Forward”.
(If the screw is reversed-thread screw, please set Forward /
Reverse switch to “Reverse”.) Point at the place of
the bit and the screw, press the trigger to start; When torque reaches user’s setting, the clutch will shut out
automatically, the power will shut off and the motor breaks immediately, the screwdriver stop running.
b) MYR Series Push Start Type screwdriver: When fasten a screw, please set Forward / Reverse switch to
“Forward”.
(If the screw is reversed-thread screw, please set Forward / Reverse switc
h to “Reverse”.) Point at the place of
the bit and the s
crew, push down the screwdriver to start; When torque reaches user’s setting, the clutch will
shut out automatically, the power will shut off and the motor breaks immediately, the screwdriver stop running.
8) Trigger Start Type screwdriver: When loosen a f
astened screw, please set Forward / Reverse switch to “Reverse”.
(If the screw is reversed-
thread screw, please set Forward / Reverse switch to “Forward”.)
Follow the above operation, after loosening the screw, release the trigger to stop.
Push Start Type
screwdriver: When loosen a fastened screw, please set Forward / Reverse switch to “Reverse”
(If the screw is reversed-
thread screw, please set Forward / Reverse switch to “Forward”.)
Follow the above operation, after loosening the screw, stop pushing the screwdriver to stop.
9) Operation frequency: The original setting of the frequency is 1 sec on / 3 sec off. The number of screw fastened is
about 15 pcs. Over frequently using makes the motor overheated and damage to screwdriver.
Enough heat-dissipation is good for screwdriver.
10) Do not use this screwdriver to fasten wooden screws.
11) Do not operate the Forward / Reverse switch when the motor is running.
12) Whenever a screwdriver is not being used, move the Forward / Reverse sw
itch to the “OFF” position and
unplug the screwdriver.
13) Keep staying aware.
Pay attention on your work, check safety measures and every part is workable before using screwdrivers, to
make sure screwdrivers can work under original design function.
Slow speed (rpm) operation frequency
Slow speed (rpm)
operation frequency
Slow speed (rpm)
operation frequency
900
1.0 ON 3.0 OFF
600
1.0 ON 3.0 OFF
300
2.0 ON 5.0 OFF
850
1.0 ON 3.0 OFF
550
2.0 ON 5.0 OFF
250
2.0 ON 5.0 OFF
800
1.0 ON 3.0 OFF
500
2.0 ON 5.0 OFF
200
2.0 ON 5.0 OFF
750
1.0 ON 3.0 OFF
450
2.0 ON 5.0 OFF
150
2.0 ON 5.0 OFF
700
1.0 ON 3.0 OFF
400
2.0 ON 5.0 OFF
100
2.0 ON 5.0 OFF
650
1.0 ON 3.0 OFF
350
2.0 ON 5.0 OFF
Operations Cautions
Slow speed Duty Cycle Conversion (for reference)
Based on 1000 rpm, 1 second ON/3 seconds OFF. For example, the duty cycle for 350rpm,1000-350=650
，
650/1000%=65%
ON= 1*1.65= 1.65
，
OFF =3*1.65 =4.95 (rounded value) =2 seconds ON / 5 seconds OFF
This tool is intended for a duty cycle of 2.0 sec on, 5.0 sec off.
