Installation
1. SPI-20686 and 94391 Monitor Head:
The SPI-20686 and 94391 Monitors are designed to
maximize valuable work area and should be mounted at
eye level above the workstation, either on a post or shelf
support. A double-sided adhesive Velcro
®
attachment is
provided to hold the lightweight head in place.
2. GROUND CONNECTION:
The green wire extending from the monitor must be
attached to a facility ground.
Caution:
The total amount of resistance through all
monitored parts should not exceed 10.0 megohms
total.
3. REMOTE OPERATOR MODULES:
The remote operator modules can be
mounted at the front of the work
surface, usually under the tabletop and
flush with the front edge. Two screws
for each unit are provided for mounting.
Connect each remote to the monitor unit using the
telephone cable with RJ11 connectors.
4. POWER UP TEST
After installing the Monitor , remote units, and making the
necessary connections without the wrist straps
connected, the unit should POWER UP with the wrist
strap LED’s OFF and the audible alarm SILENT. If you
have no response to power or a red LED, check AC
outlet for proper ground or refer to trouble shooting
section.
PARK SNAP
The audible alarm is designed to alert both operator and
supervisor. The Park Snap feature provides a means
for an operator to disconnect when normally leaving the
work area, without the audible alarm sounding, and it
provides a means of wrist cord storage. You may also
disconnect the coil cord by unplugging the banana plug
from the Remote Module. Both a 7mm and 4mm Park
Snap is provided on each module.
Remote Module Description
Inside both remote modules are infrared sensors that
react to the insertion of a wrist strap wire with a banana
plug. When the banana plug is inserted, the base unit is
activated for that remote module. The Monitor LED for
the left or right wrist strap will light showing the condition
of that strap. If correct, the LED should be GREEN.
Should the wrist strap fail, be worn incorrectly or
removed by the operator, the red indicator will flash,
calling attention to a problem. Should the ground
connection be lost, the red light and alarm will be
activated. The monitors are continuous and even a
momentary break will cause alarms. The remote
modules are set at the factory to allow for sensitivity of
the “average” human body model.
Calibration Procedure Using
94373
Tester
Testing the Remote Modules
Refer to Figure 2 to see the connection setup for the
94373 tester to the SPI-20686 and Figure 3 for the
94391 monitor. Make sure that the switch located on the
face of the tester is toggled to LEFT WS / RIGHT WS. If
connected properly, all three LEDs on the monitor should
be illuminated green.
TB-20686
Page 2 of 3
© 2016 DESCO INDUSTR ES INC.
Employee Owned
Figure 2. Connecting the SPI-20686 to the 94373 Tester.
SPI-20686
Remote
Remote
94373
Figure 3. Connecting the 94391 to the 94373 Tester.
94391
Remote
Remote
94373
