10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110
2-2
PREPARATION FOR USE AND INSTALLATION
For R1L-BI units only, remove the two screws that secure the
battery retention plate.
Insert the battery cells, one at a time, in accordance with the
polarity indications marked on both the battery cell and the
battery holder. Insert the positive end of the battery cells
first.
After installing the cells, reinstall the plate (for R1L-BI only),
reinstall the instrument in its case, and secure the four corner
screws.
Power Up
Plug the power cord into the R1L-BI/R1L-BIR front panel
receptacle, and plug the other end into a standard AC outlet.
For battery operation (with charged battery cells), this step is
omitted. Turn on the POWER rotary switch. Note that this
switch turns on both line and battery power.
Charging the Battery Cells
Prior to battery operation, it is recommended the R1L-
BI/R1L-BIR Microohmmeter be plugged into AC power for at
least 14 hours to charge the battery cells. To charge the
battery cells, the Power Switch must be turned ON, and the
Range Switch should be set to 20
Ω
. With the Range Switch
set to lower ranges, the charge rate decreases and the
batteries will be discharged, especially on the 2
mΩ
range,
even with no resistance connected to the instrument.
(However, the discharge rate in this range will permit
operation for at least 14 hours with no resistance connected.)
WARNING
ALTHOUGH THE FRONT PANEL IS NORMALLY GROUNDED
VIA THE GROUND PIN OF THE POWER CABLE, IF THIS
CONNECTION IS FAULTY AND IF THE HIGH SIDE OF THE
POWER CABLE IS SHORTED TO THE PANEL, THE PANEL
COULD POSSIBLY HAVE MAINS VOLTAGE ON IT; SO DO
NOT TOUCH THE PANEL WHEN AC POWER IS CONNECTED.
