TB-9026
Page 4 of 6
© 2015 DESCO INDUSTRIES, INC.
Employee Owned
SCS
- 926 JR Industrial Drive, Sanford, NC 27332 • (919) 718-0000 • Website:
StaticControl.com
Operations
Ground Impedance Monitor
Connect the ground wire to an electrical known good
ground point.
Connect the output wire to the tool, if you intend to use
it; otherwise leave it open.
Connect the ground monitor inputs to identified locations
in a process tool or several pieces of other equipment.
Make sure to connect the monitoring inputs to different
physical locations than those points used for their
grounding.
Person Voltage and Resistance Monitor
This is a feature of the Ground Man Plus Ground
Monitor. Plug the dual conductor ground cord of the
wrist strap into the jack on the front of the unit. If the
wrist strap is worn properly, a green LED will come on;
otherwise the red LED will be on. In order to provide
good ground connection, the wrist strap must be worn
tightly and the green light on the Ground Man Plus
Ground Monitor is an indication of that.
If, for some reason, while properly connected, the
operator develops excessive body voltage (in excess of
± 2.5V in any polarity), the green LED may still be on,
but the red LED will blink and the alarm sound will be
on. No LED is on if a dual conductor ground cord is not
plugged into the jack.
Maintenance
Procedures for Cleaning and Decontamination
Unplug power from the device. Clean using a dry brush
or lint free cloth around the device. In case of contact
malfunction, clean contacts using a contact cleaner or a
brush and tighten all connections. Plug in the power.
Repairs and Servicing
Do not attempt to repair the product yourself. Contact a
SCS sales representative or authorized dealer to request
inspection and repair. Replace power supply if damaged
using only SCS supplied parts. Other than replacement
of remote jacks, do not attempt to service the device.
There are no user-serviceable parts.
Device Calibration
Contact a SCS sales representative or authorized dealer
to request for product calibration if needed.
Safety Information
Read, understand, and follow all safety information
contained in these instructions prior to the use of this
device. Retain these instructions for future reference.
Intended Use
The SCS Ground Man Plus Ground Monitor is intended
for use by electrical assembly personnel to monitor
ground impedance for process and equipment tools.
The Ground Man Plus Ground Monitor is both a wrist
strap monitor and a ground monitor. It provides operator
grounding, and can be used at work areas or locations
to monitor the ground impedance of process tools in
semiconductors, disk drives, flat panels, and EMS and
other environments. Ground impedance monitoring can
be used for up to three points for metal grounds within
a tool. The Ground Man Plus Ground Monitor can also
be used to monitor the resistance to ground and voltage
level on a person. The units incorporate green and red
LEDs and audible alarms.
The systems must be installed as specified in the user’s
guide in an indoor commercial/industrial environment,
and have not been evaluated for other uses or locations.
If the equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment
may be impaired.
Warning:
To reduce the risks associated with hazardous
voltage and fire:
• Do not use the power supply if damaged. Do not
modify or attempt to service the power supply. Contact
SCS authorized service center for replacement.
• Replace power supply if damaged using only SCS
supplied parts.
• Do not attempt to service the SCS Ground Man Plus
Ground Monitor, there are no user serviceable parts;
Return to SCS for service.
• Do not position the CTC334 Ground Man Plus Ground
Monitor accessories or other equipment where
unplugging the power supply is
difficult.
• Always locate the power source (socket or outlet) near
the equipment. The power supply plug serves as the
disconnect device.
• Do not use the Ground Man Plus Ground Monitor or
its power supply outdoors or wet/humid environments.
• Do not use the Ground Man Plus Ground Monitor or its
power supply outside of the operating conditions listed
in this user guide.
• Use only a dry cloth when cleaning.
Figure 4. Installing the Ground Man Plus Ground
Monitor.