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High Capacity Power Supply
1.1 Introduction
1.2 Operating
Instructions
1.2.1 Battery charging
1.2.2 Connection to a Power
Source
The Isco 913 High Capacity Power Supply combines a regulated
12 VDC, 5 Amp power supply with a Model 934 Nickel Cadmium
battery charging capability. The 913 is the same physical size as
a standard Isco battery, and provides operating power through
means of a short cable with a two-pin M/S connector, which
attaches to the sampler or flow meter. The purpose of this power
supply is to provide a power source for installations where con-
tinuous AC power is available. If it is anticipated that the AC
power may be interrupted for short periods of time, Isco offers
the Model 914 Battery-Backed Power Supply, which can provide
uninterrupted power.
Attach the shorter of the two 913 Power Supply cables to the flow
meter or sampler in the same manner as a standard battery.
Refer to the sampler or flow meter instruction manual to see how
power supplies are connected. Set the unit in place and pull the
rubber catches through the metal draw latches on each end of the
case to secure the mounting. Plug the line cord into an AC outlet.
D o n o t u s e a s w i t c h e d o u t l e t . Av o i d u s i n g o u t l e t s o n
heavily-loaded circuits. Avoid using extension cords. Check the
outlet to see if it is a GFCI (Ground Fault Circuit Interrupter)
outlet, or is attached to a circuit controlled by a GFCI periodi-
cally to make sure it has not tripped, as this will cause the stop
the operation of the attached equipment.
To use the battery charging feature, attach the two-pin M/S cable
of the Isco 934 battery to M/S connector on the power pack. Allow
15 to 18 hours for a full charge. Please refer to the Power
Products Guide for further information regarding the charging
and discharging rates of Isco batteries.
To reduce risk of injury, charge only Isco 934 Nickel Cadmium
rechargeable batteries. Other types of batteries may burst,
causing personal injury and equipment damage.
Model 913 – The Model 913 High Capacity Power Supply is
intended for use on a 120 VAC, 60 Hz circuit and is equipped
with a thre e-pron g standa rd ground ed plug (ske tch A ,
Figure 1-2). It must be used with a three-slot grounded outlet
(sketch B). A temporary adaptor, as seen in sketch C, may be
used to connect this plug to a two-wire receptacle (sketch D) if
the correct grounded outlet is not available. The temporary
adaptor should be used only until a proper outlet can be installed
by a qualified electrician.
CAUTION
1-1
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