Interscan Corporation BC1-24V User manual

01/14/2014 120-00006 REV A PAGE 1
Proprietary and Confidential: This document is the sole property of Interscan Corp. The information contained
in this document is confidential and is not to be used, reproduced, or discussed without prior written consent by
Interscan Corp.
Instruction Manual
BC1-24VSulfurylFluorideBatteryPackCharger
Service Department
[phone] ext. 121
[phone] ext. 121
FAX [phone] E-mail: [e-mail]

01/14/2014 120-00006 REV A PAGE 2
Proprietary and Confidential: This document is the sole property of Interscan Corp. The information contained
in this document is confidential and is not to be used, reproduced, or discussed without prior written consent by
Interscan Corp.
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TABLE OF CONTENTS
SECTION TITLE PAGE
Introduction 4
1.0 Battery Charger Principles of Operation 4
2.0 Precautions and Proper Care 4
3.0 Operation 5
4.0 Troubleshooting 5
4.1 Determining Internal Impedance 6-7
5.0 Warranty 8
6.0 Return Authorization 9

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Proprietary and Confidential: This document is the sole property of Interscan Corp. The information contained
in this document is confidential and is not to be used, reproduced, or discussed without prior written consent by
Interscan Corp.
Introduction
This manual covers the basic function, operation and precautions associated with the
Interscan BC1-24V Sulfuryl Fluoride Battery Pack Charger. The manual should
be read completely before using the charger!
1.0 Battery Charger Principles of Operation
The battery charger has the universal input range of 100 to 240 VAC (50/60 HZ). Output is
28.8 VDC maximum and 1.5 ADC maximum. The input connector is a standard 3-Pin
IEC60320 C14 mated with an AC cord usable in the country of destination. The charger is
protected against short circuit, reverse polarity and over voltage.
The LED first lights green when plugged into AC and not connected to battery pack.
Connection to a discharged battery pack results in the LED turning amber and the charging
process initiating.
The process first stage starts with a pulsed mode for de-sulfation of the battery plates. The
second stage starts with a constant current of approximately 1.5 ADC. The third stage occurs
after approximately 2 hours in which the applied voltage becomes a constant voltage of about
28.8 VDC. In the 4th stage the LED lights green when fully charged (a current of
approximately 0.5 ADC). The final stage is a constant voltage in which the current decreases
approaching zero current. The current is slightly increased from time to time to maintain the
battery. This allows the battery pack to be left on constant charge.
2.0 Precautions and proper care
1] Always monitor battery temperature. A battery warm to the touch is OK, and hot to the
touch may indicate a problem.
2) Charge battery pack at least once a month. Battery packs not used for long periods (over
a month) will begin to have a chemical reaction occur which can decrease the battery pack life
or causeimproper charging.
3] Never charge battery packs showing signs of corrosion. A deposit around the battery
terminals indicates apossible leak of electrolyte.
4] Place resistor for internal impedance test on a brick or surface that will not be damaged by
high heat.

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Proprietary and Confidential: This document is the sole property of Interscan Corp. The information contained
in this document is confidential and is not to be used, reproduced, or discussed without prior written consent by
Interscan Corp.
3.0 Operation
Plug BC1-24V charger into AC outlet. The LED should come on and immediately have a green color.
Connect the battery pack if there are no signs of corrosion. The LED should switch to an amber color.
Consult troubleshooting if the LED turns back to green in less than 30 minutes. A fully discharged ("Lo Bat"
on GF1900) battery pack should take 9 to 10 hours to charge in which time the LED will be amber. The
LED will turn to green when the battery pack is fully charged. The batteries can feel warm to the touch
when fully charged. The battery pack may be left connected for longer than 10 hours as long as
temperature is periodically checked and the LED is green.
4.0 Troubleshooting
Symptom
Corrective Action
No Green LED when
plugged into AC, no
battery pack connected
Contact factory
LED turns back to green
in less than 30 minutes
when battery pack is
connected
Measure voltage of battery pack . A voltage greater than 26
VDC indicates the battery pack may not have been fully discharged
to "Lo Bat"
Consult Determining Internal Impedance (See Section 4.1)
High internal impedance can cause LED to turn back to green in
less than 30 minutes
Contact factory

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Proprietary and Confidential: This document is the sole property of Interscan Corp. The information contained
in this document is confidential and is not to be used, reproduced, or discussed without prior written consent by
Interscan Corp.
4.1 Determining Internal Impedance
Items needed to determine Internal Impedance:
2 - DVM (Digital Voltmeter) use one with a range capable of precisely measuring 27.6 VDC
more or less, and the second with a range capable of precisely measuring 10.0 ADC or less.
1 - Stopwatch or timer
1 - 12Ω250 Watt resistor
Alligator Clip leads
Figure 1
DVM 1
DVM 2
Only connect this lead when
ready to test!

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in this document is confidential and is not to be used, reproduced, or discussed without prior written consent by
Interscan Corp.
Lift the flap on the batterypack case. Note the wiring colors connected to the batteries. Disconnect the two
wires connected at the outside of the batteries. This will leave the batteries connected by one wire at the
center. Wire the battery pack, DVMs and resistor as shown in Figure 1. Note: One lead from resistor is
not connected until test is ready to perform. Place resistor on a brick or surface that will not be
damaged by high heat!
Set DVM 2 to a range to most precisely measure approximately 27.6 VDC. Set DVM 1 switch to
Amps DC. Connect the test jig to the battery pack and start the stopwatch. Record the battery pack
voltage (DVM2) and current (DVM1) after 5 minutes has elapsed.
1] _____________ADCL ______________ VDCL After 5 minutes “L” denotes load
DVM 1 DVM 2
Stop the stopwatch, disconnect the resistor lead from the Battery Pack, and start the stopwatch.
Allow 5 minutes to elapse and record the Battery Pack voltage.
2] ______________VDCNL After 5 minutes “NL” denotes no load
DVM 2
Disconnect the DVM from the battery pack.
You will now use the Recorded voltages and current to calculate the internal resistance. This is
accomplished by subtracting the voltage (VDCL) from the voltage (VDCNL), then divides the result
by the current (ADCL).
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Internal Resistance should never exceed 0.75, and will normally be about 0.35.

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Proprietary and Confidential: This document is the sole property of Interscan Corp. The information contained
in this document is confidential and is not to be used, reproduced, or discussed without prior written consent by
Interscan Corp.
Warranty
5.0 INTERSCAN’s Warranty Policy
INTERSCAN CORPORATION warrants portable analyzers of its
manufacture (sensors, batteries, fuses, lamps, tubing, fittings,
filters, and scrubbers excepted) to be free from defects in material
and workmanship for a period of one year from date of shipment.
INTERSCAN CORPORATION warrants sensors of its
manufacture to be free from defects in material and workmanship
for a period of six months from date of shipment.
INTERSCAN CORPORATION'S sole obligation under this
warranty is limited to repairing or replacing, at its option, any item
covered under this warranty, when such item is returned intact,
prepaid to the factory (or designated service center).
This warranty does not apply to any of our products which have
been repaired or altered by unauthorized persons, or which have
been subject to misuse, negligence, or accident, incorrect wiring
by others, installation or use not in accordance with instructions
furnished by the manufacturer, or which have had the serial
numbers altered, effaced or removed. The sensors are factory
sealed and must not be opened or modified in the field for the
warranty to remain in effect. This warranty is in lieu of all other
warranties, whether expressed or implied.
Additionally, in a custom system, warranty on any component
shall not exceed the manufacturer's warranty given to
INTERSCAN CORPORATION.

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Proprietary and Confidential: This document is the sole property of Interscan Corp. The information contained
in this document is confidential and is not to be used, reproduced, or discussed without prior written consent by
Interscan Corp.
Return Authorization
6.0 INTERSCAN’s Return Authorization Policy
All returns for repairs require a "RETURN AUTHORIZATION
NUMBER" issued by the INTERSCAN Service Department upon
request. Below is the link to the RMA form:
http://www.gasdetection.com/contact/index.php
This is done primarily to cause the user to contact the factory
directly. The reason for this is that a high percentage of service
problems are resolved over the telephone, avoiding the need for
returning the analyzer or part.
Should return of the analyzer or part be advised by the Service
Department, the "RETURN AUTHORIZATION NUMBER" will
expedite prompt return of the repaired unit.
For service information, please contact:
INTERSCAN CORPORATION
Service Department
[phone] ext. 121
[phone] ext. 121
FAX [phone] E-mail: [e-mail]
Link for the Online RMArequest form:
http://www.gasdetection.com/contact-interscan/rma-request/