6
Note:
For more information about wrist strap
monitoring see Additional Wrist Strap
Monitoring Information (Section 12).
Section 2.
Operating Your System
Fig. 2
To operate the 3M™ Model 725 Wrist
Strap Monitoring system, attach the
monitor’s (6 ft.) ground cord with
dual conductor ground clip to a
suitable ground.
Caution
If you decide not to use the dual
conductor ground clip that is attached
to the monitor’s ground cord in the
way described in this user instruction
manual, observe the following
precaution: Attach each of the two
wires of the monitor’s ground cord
to separate ground bonding points.
By attaching the wires to the same
ground but at different physical
locations, the monitor can check for
loose or lost connections.
Attach a 3M™ Dual Conductor
Ground Cord to a 3M™ Dual
Conductor Wrist Band. Place the wrist
band on your wrist and plug the cord
into the jack on the front of the Model
725 Monitor. Plugging into the jack
activates the monitor and causes it to
emit a short beep and the red lamp to
momentarily flash. If the red lamp
flashes with an intermittent audible
alarm or at any time during use, the
resistance of the wrist strap assembly
is greater than 35 megohms.** If the
red lamp and the audible alarm remain
on continuously, check the dual
conductor ground clip connection.
The system is now ready for use.
Note:
Operators may complain that the
alarm is sounding too often until they
learn to adjust the wrist band to fit
securely or apply an approved skin
moisturizer on a frequent basis.
Please remember that the monitor is
informing you that the operator is
exceeding the established static
control requirement for resistance
to ground when wearing a static
protective wrist strap assembly.
These alarms alert the operator when
sensitive electronics are possibly being
exposed to static electricity. Prior to
incorporating the wrist strap monitor
into your static control process, the
operator was unaware of these events.
**Resistance values are ±15%
