BF-Series (BF060, BF080 & BF120 models) Operation Instructions
Corporate Headquarters:
1080 North 11th Street, San Jose, CA 95112 Phone: (408) 292-2214 Fax: (408) 292-2733
www.mountztorque.com
Page 6
BF-Series Standard Plus Models & Soft Stop Plus Models
The “Plus” models feature a selectable Double Hit Mode
for soft joint applications and a selectable Soft Start mode
(from 0.2, 0.4 & 0.6 seconds). This option is only available
with Standard & Soft Stop “Plus” models.
Double Hit Mode
The Double Hit mode is for very soft joint applications. When
an electric screwdriver runs down a fastener and the tool
clutches off once the preset torque is achieved there can be
some joint relaxation that can occur. The Double Hit mode
has the electric screwdriver perform a second hit to stabilize
the torque for joint relaxation.
Joint relaxation is caused by the surface of part(s) embedding or by "soft parts" such as gaskets, plastics or spongy material, which
collapses under the clamping force created in a torque condition. For Hard Joint applications there is no need to use the Double Hit
mode.
The clutch of the electric driver works twice at the set torque under the "Double Hit" mode. The Double Hit will increase the
repeatability accuracy at the target torque by double checking.
Operating the Double Hit Feature with “Plus” models
The default setting is OFF.
1. Press the Double Hit button for 2 seconds to turn ON Double Hit. (ON Status is indicated with LED - Orange). Note - When the
motor is operating LED will be Green.
Soft Start Mode
There are 3 different time settings for the Soft Start mode which are (0.2, 0.4 & 0.6 seconds). The default setting is OFF.
1. Press the Soft Start button for 2 seconds to turn on Soft Start.
- Soft Start is ON and set for 0.2s (LED - Orange)
- Soft Start is ON and set for 0.4s (LED - Orange blinks 1 time)
- Soft Start is ON and set for 0.6s (LED - Orange blinks 2 time)
The Soft Start button is “wrap around” button meaning you can toggle through the settings continuously by pressing the button
(OFF - 0.2s-0.4s-0.6s).
