49-8103RK
Standby Battery
Operator’s Manual
Part Number: 71-0117RK
Revision: 0
Released: 8/18/08
www.rkiinstruments.com
Product Warranty
RKI Instruments, Inc., warrants gas alarm equipment sold by us to be free from defects in
materials, workmanship, and performance for a period of one year fr o m date of shipment
from RKI Instruments, Inc. Any parts found defective withi n tha t period will be repaired
or replaced, at our option, free of charge. This warranty does not apply to those items
which by their nature are subject to deterioration or consumption in normal ser v ice, and
which must be cleaned, repaired, or replaced on a routine basis. Examples of such items
are:
W arranty is voided by abuse including mechanical damage, alteration, rough handling, or
repair procedures not in accordance with the operator’s manual. This warranty indicates
the full extent of our liability , a nd we are not r esponsible for removal or r eplacement costs,
local repair costs, transportation costs, or contingent expenses incurred without our prior
approval.
a) Absorbent cartridges d) Batteries
b) Pump diaphragms and valves e) Filter elements
c) Fuses
THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER
WARRANTIES AND REPRESENTATIONS, EXPRESSED OR IMPLIED,
AND ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF
RKI INSTRUMENTS, INC., INCLUDING BUT NOT LIMITED TO, THE
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL RKI INSTRUMENTS,
INC., BE LIABLE FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
LOSS OR DAMAGE OF ANY KIND CONNECTED WITH THE USE OF
ITS PRODUCTS OR FAILURE OF ITS PRODUCTS TO FUNCTION OR
OPERATE PROPERLY.
This warranty covers instruments and parts sold to users by authorized distributors,
dealers, and representatives as appointed by RKI Instruments, Inc.
We do not as su m e i ndemnification for any accident or damage caused b y t he op e ration of
this gas monitor, and our warranty is limited to the replacement of parts or our complete
goods.
49-8103RK Standby Battery • 2
Overview
ur
3
This manual describes the 49-8103RK standby battery. This manual also describes how to
install and maintain the stan d b y battery.
Specifications
Table 1 lists specifications for th e standby battery.
Table 1: Specifications
Construction (housing) Weatherproof ABS plastic
Power Rating 24 VDC, 1.2 AH (amp hour)
Operating Temperature 32° F to 104° F (0°C to 40°C)
Size 5.90” H x 5.90” W x 3.80” D (150 mm H x 150 mm W x 97mm D)
Weight 3.9 lbs (1.8 kg)
Description
Wire Nuts,
Shipped With
Unit (1 Extral)
The 49-8103RK Standby Battery is designed for use with a gas monitoring controller
capable of running from 24 VDC such as the RKI Instruments, Inc. Beacon 110 (ordered
with the battery charging option) or Beacon 200 controller. It can provide temporary
power to a controller if primary AC power is lost. The standby battery consists of two
batteries installed into a plastic housing with wire nuts provided for wiring connections.
3/4" Conduit Hub
1.2 Amp Ho
Battery, 2X
Vent
Wire (Black) for
Negative Connection
Wire (Red) for
Positive Connection
Factory Installed Jumper
Figure 1: Standby Battery Component Location
49-8103RK Standby Battery • 3
Housing
The standby battery’s fiberglass housing is weather- and corrosion-resistant. It is suitable
for installation where general purpose equipment is in use. The housing door is hinged on
the left side and is secured by two latches on the right side. Four mounting feet are
attached to the back of the housing (one at each corner). The mounting feet allow you to
install the housing to a vertical surface. A cond uit hub on the top of the housing is for
external wiring connections. A weathe r-resistant vent on the upper left side prevents
buildup of hydrogen in the housing if it is vented by the batteries.
Batteries
Two lead acid 12 VDC, 1.2 AH batteries are installed into the housing with adhesive
backed self-locking strip fastener s. For each battery, one side of the strip fastener is
installed on the back of the inside of the housing and the other side is installed on the back
of the battery . When the battery is pushed firmly onto the strip fastener in the housing, the
two sides of the fastener click together to retain the battery.
The two batteries are connected to each other in series by a factory installed wire jumper
so that the y p roduce 24 VDC. Two f a ctory installed wires allow connection to the positive
and negative of the standby battery. The ends of these wires are covered with insulating
shrink tubing to prevent shorting during shipment. These pieces of shrink tubing will
have to removed during installation of the standby battery (see “Wiring the Standby
Battery to a Controller” on page 5).
Installation
Wire Nuts
Three wire nuts are provided with the standby battery for wiring connections. The wire
nuts are shipped in the standby battery packaged in a small plastic bag. Only two wiring
connections will have to be made to the standby battery (see “Wiring the Standby Battery
to a Controller” on page 5), so one of the wire nuts is provided as an extra in case one is
lost or damaged.
This section describes procedures to mount the standby battery and wire it to a controller.
Mounting the Standby Battery
1. Select a mounting site close to the controller that requires standby power. Consider
the following when you select the mounting site.
• Select a site where the standby battery is not likely to be bumped or disturbed.
Make sure there is sufficient room to perform maintenance procedures.
• The conduit hub on the top of the standby battery housing makes wiring to a
controller convenient if the standby battery is mounted below a con troller
2. Open the standby battery door and remove any packing materials from the housing.
Be careful not to lose the three wire nuts that are provided for wiring connections.
3. Verify that the two batteries have not come loose during shipment an d are still firmly
installed.
If one or both of the batteries is loose, line up the self-lo c king strip on the bottom of
the battery with the strip on the back of the housing and push the battery onto th e
strip firmly. You should feel a “click” when the two strips engage and lock.
4. Close and latch the stand b y battery housing door.
49-8103RK Standby Battery • 4
5. The standby battery is shipped with the mounting feet positi oned be hind the ho using.
Loosen the screws that secure the feet to the housing, rotate the feet to their mounting
position as shown in Figure 2, then tighten the screws.
1.75
3.80
7.30
6.06 Min
6.85 Max
#10 Screw, 4X
(user supplied)
5.90
3/4" Conduit
Hub
4.71
5.90
Figure 2: Outline & Mounting Dimensions
6. Insert #10 screws through the slots in the mounting feet at each corner of the housing
to secure the housing to the mounting surface.
Wiring the Standby Battery to a Controller
WARNING: Always verify that all power to the controller is OFF before you make
wiring connections.
1. Turn off the controller.
2. Turn off or unplug power t o the con troller.
3. Install an appropriately rat ed cable bushing or conduit to the conduit hub on the
controller that will be used for wires from the standby battery.
4. Open the standby battery housing door.
5. Install an appropriately rat ed cable bushing or conduit to the conduit hub on the
standby battery housing.
6. Route two wires in conduit or a two wire cable from the cont ro ller con duit hub to the
standby battery conduit hub. 16 AWG wire is recommended, but the wire nuts will
accommodate wire up to 14 AWG.
7. Connect the two wires to the 24 VDC power input terminals at the controller. Figure 3
shows standby battery wiring to the Beacon 110 and Figure 4 shows standby battery
49-8103RK Standby Battery • 5
wiring to the Beacon 200. Note which wire is positive and which wire is negative.
th
8. A short factory installed jumper wire terminated with push-on lugs connects the two
batteries in the standby battery. Remove this wire from one of the battery terminals
and make sure it is not contacting the terminal.
9. When the standby battery is shipped from the factory, the ends of the two wires
provided for external wiring connections are covered with shrink tubing to prevent
shorting of the batteries during shipment. Remove the shrink tubing and strip the end
of each wire.
10. Use the wire nuts provided with the standby battery to connect the positive and
negative wires in the standby battery to the positive and negative wires coming from
the controller as shown in Figure 3 and Figure 4.
Beacon 110 Housing
Alarm Terminal Strip Controller Terminal Strip
FAIL ALARM-1 ALARM-2
NO NC C NO NC C NO NC C
ALARM
BUZZER
ALARM
RESET
4-20 mA
OUTPUT
EXT DC
24V BATT
Connections Made Wi
Wire Nuts Provided
++
Standby Battery
Factory
Installed
Jumper
Figure 3: Wiring the Standby Battery to a Beacon 110
Shown Without
Door
49-8103RK Standby Battery • 6
Controller Terminal Strip
th
BAT
BAT +
+ CH1
OUT
+ CH2
OUT
RESET
RESET
BUZ
BUZ +
++
Beacon 200
Housing
Connections Made Wi
Wire Nuts Provided
Standby Battery
Shown Without
Door
Factory
Installed
Jumper
Figure 4: Wiring the Standby Battery to a Beacon 200
11. Turn on power to the controller.
12. Turn on the controller.
13. When the controller has completed it’s startup sequence, re-connect the end of the
jumper wire to the battery terminal from which it was removed.
14. Close the standby battery ho using door.
15. The on/off switch on the Beacon 110 and Beacon 200 controls AC power to the
instruments. Verify that the standby battery is installed properly by flipping the
switch on your controller to the off position and observing that the controller
continues to operate powered by the standby battery.
16. Flip the controller power switch to the on position.
49-8103RK Standby Battery • 7
Operation
When the standby battery is connected to an RKI Instruments, Inc. controller such as the
Beacon 110 (ordered with the optional battery charging capability) or the Beacon 200, the
controller maintains a trickle charge on the battery to keep it fully charged. If primary AC
power to the controller goes down, the standby battery will power the controller for a
limited amount of time until primary power returns. When primary AC power returns,
the controller will begin charging the standby battery. Rechar ge time will vary depending
on the level of discharge. A typical recharge time if the battery is completely discharged is
12 hours.
CAUTION: When using the standby battery with a Beacon 110, verify that the Beacon 110 was
ordered with the battery charging option. If the battery charging option is not
installed, the Beacon 110 will not charge the standby battery.
Runtime will vary depending on the con troller and config uration of the controller. The
table below shows typical controller runtimes for common configu rations.
Table 2: Typical Controller Runtimes on Standby Battery
Controller Controller Detector Configuration Runtime
Beacon 110 LEL 4 - 20 mA transmitter 9 hours
Beacon 110 Toxic or Oxygen 19 hours
Beacon 110 LEL Direct 13 hours
Beacon 110 35-3000RK Sample Draw 4 hours
Beacon 110 GD-K7D2 Sample Draw 8 hours
Beacon 200 Two Channels LEL 4 - 20 4.5 hours
Beacon 200 Two Channels LEL Direct 4.5 hours
Beacon 200 Two Channels Toxic or Oxygen 10 hours
Beacon 200 Two channels 35-3000RK Sample Draw 2 hours
Beacon 200 Two Channels GD-K7D2 Sample Draw 2.5 hours
49-8103RK Standby Battery • 8
Maintenance
This section describes preventive maintenance and troubleshooting procedures. It also
includes component replacement procedures and a parts list.
Preventive Maintenance
Check the standby battery voltage with a volt meter on a quarterly basis and verify that it
is fully charge d. A ful l y charged standby battery connected to a Beacon 110 or Beacon 200
that trickle charges it will typically measure between 28 volts and 29 volts.
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended
action for problems you may encounter with the standby battery.
Condition Symptom(s) Probable Causes Recommended Action
Low Battery
Voltage
•The standby battery
voltage measures
below 28VDC at t he
quarterly voltage
check.
• The wiring to the
controller is
disconnected or
misconnected.
•The wire nut
connections in the
standby battery are
not properly made.
• The wiring to the
battery terminals in
the standby battery is
disconnected.
• The controller is not
fully charging the
standby battery.
1. Verify that the wiring at the controller is
correct and secure.
2. Verify that the wire nut connections in the
standby battery are properly made.
3. Verify that the lugs that fit over the battery
terminals are securely and correctly
installed.
4. On the Beacon 200, check the DC fuse.
The Beacon 110 uses a polyfuse that
self-resets to protect the DC input and it
is not user serviceable.
5. If the low voltage condition continues,
contact RKI for further instruction.
Replacing a Battery
If one of the 12 VDC batteries in the standby battery needs replacement, RKI Instruments,
Inc. recommends that both batteries be replaced. The part number for a replacement
battery is listed in the parts list at the end of this section. Follow the instructions below to
replace the batteries.
1. Turn off the controller.
2. Turn off power to the controller.
3. Open the standby battery housing door.
4. Remove the jumper wire that connects the two batteries. It connects to both batteries
with a push-on lug.
5. Remove the remaining two connections to the batteries, the positive and negative
connections, by removing the push-on lugs from each battery.
6. Fix the positive and negative wires out of the way.
7. Push the each battery to the left and right, rocking it from side to side to loosen the
locking strip on the bottom of the battery from the locking strip on the back of the
housing, then pull the battery out of the housing.
NOTE: Dispose of the old batteries properly.
49-8103RK Standby Battery • 9
Parts List
8. Install each replacement battery. Line up the locking strip on the back of the battery
with the strip on the inside back of the housing and push the battery firmly onto the
strip. You should feel a “click” wh en the locking strips engage and lock.
9. Install the positive and negative connections to the appropriate battery terminals (see
Figure 3 and Figure 4).
10. Turn on power to the controller.
11. Turn on the controller.
12. When the controller has completed its warm-up sequence, install the jumper wire
between the two batteries (see Figure 3 and Figure 4).
13. Close the standby battery ho using door.
14. The on/off switch on the Beacon 110 and Beacon 200 controls AC power to the
instruments. Verify that the standby battery is installed properly by flipping the on/
off switch on a Beac on 110 or Beacon 200 to the off position and observing that the
controller continues to operate powered by the standby battery.
15. Flip the controller on/off switch to the on position.
Table 3 b e lo w lists spare part s for t he st an d b y b at tery.
Table 3: Standby Battery Spare Parts
Part Number Description
18-0107RK 3/4” NPT conduit hub
18-0112RK Vent
45-0600RK Wire nut, for 22 - 14 AWG wire
49-1551RK-01 Battery, lead acid, 12 V, 1.2 amp hour, w/self locking fastener strip
49-8103RK Standby Battery • 10
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