WPI A362 User manual

Instrumenting scientific ideas
WORLD
PRECISION
INSTRUMENTS
A362
Battery Charger
Serial No._____________________
www.wpiinc.com
INSTRUCTION MANUAL
082318

A362
World Precision Instruments i
CONTENTS
ABOUT THIS MANUAL ................................................................................................................... 1
INTRODUCTION .............................................................................................................................. 1
SPECIFICATIONS ............................................................................................................................. 1
OPERATING DIRECTIONS.............................................................................................................. 1
General........................................................................................................................................ 1
Cleaning....................................................................................................................................... 2
PREPARATION FOR USE ................................................................................................................ 2
General........................................................................................................................................ 2
Shipping Information ............................................................................................................... 2
Safety............................................................................................................................................ 2
Power Source............................................................................................................................. 3
Grounding the Instrument ..................................................................................................... 3
Use the Proper Power Cord................................................................................................... 3
Use the Proper Fuse ................................................................................................................ 3
Do Not Operate in Explosive Atmospheres ...................................................................... 3
Do Not Remove Cover ............................................................................................................. 3
INSTALLATION ................................................................................................................................. 4
Input Power................................................................................................................................ 4
Output Fuse ............................................................................................................................... 4
DECLARATION OF CONFORMITY ................................................................................................ 6
Copyright © 2018 by World Precision Instruments. All rights reserved. No part of this publication may
be reproduced or translated into any language, in any form, without prior written permission of World
Precision Instruments, Inc.

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ABOUT THIS MANUAL
The following symbols are used in this guide:
This symbol indicates a CAUTION. Cautions warn against actions that can cause
damage to equipment. Please read these carefully.
This symbol indicates a WARNING. Warnings alert you to actions that can cause
personal injury or pose a physical threat. Please read these carefully.
NOTES and TIPS contain helpful information.
INTRODUCTION
The Model A362 Battery Charger is specically designed to recharge the batteries of
WPI’s second generation high voltage stimulus isolators. These new isolators, which
include Models A360R and A320R, operate from long-life, nickel-cadmium battery
stacks. The A362 Charger provides the optimum combination of short recharging time
and the assurance that the batteries can be neither overcharged nor damaged, even if
left continuously connected.
SPECIFICATIONS
Outputs (two)......................................5 mA DC, constant current, 150 V DC, typical (each)
Power...............................................................................95-130 V AC or 190-260 V AC, switch
....................................................................................selectable single phase, 50/60 Hz, 10 VA
Temperature................................................................................... 10°C (50°F) to 40°C (104°F)
Dimensions .................................................................4.1 x 2.75 x 5 in. (10.5 x 7.0 x 12.7 cm)
Weight ............................................................................................................................2 lb (0.9 kg)
Shipping weight............................................................................................................4 lb (1.8 kg)
OPERATING DIRECTIONS
General
The A362 Battery Charger becomes operational simply by connecting the input to a
source of mains power and the output to the instrument in need of charging.
Upon detecting mains power, the green POWER ON lamp will light. The A362
simultaneously charges two stacks of nickel-cadmium batteries. If the instrument
to be charged contains viable batteries, both the red OUTPUT A and B lamps will
light as soon as current starts to ow into the batteries. If only one lamp is lit, one of
the battery stacks may be disconnected or defective. Consult with your instrument
manual on the proper method of accessing the batteries. If both lamps fail to light,

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check that the instrument under charge is switched into the “charge” mode.
The output of the A362 is current regulated and thus by design is short circuit proof.
The internal fuse of the Charger is a back-up to protect the batteries in the case of an
unlikely, catastrophic failure of the current regulating circuitry. Repeated blowing of
this fuse, requires repair, not replacement!
With completely discharged batteries, 16 hours of continuous charging will completely
replenish the batteries. With partially discharged batteries, proportionally fewer
hours are required. The Charger is designed for continuous duty and maintaining it
connected for more than 16 hours, will not harm the batteries.
Cleaning
CAUTION: Do not use alcohol, aromatic hydrocarbons or chlorinated solvents for
cleaning. They may adversely react with plastic materials used to manufacture the
instrument.
The exterior of this instrument may be cleaned periodically to remove dust, grease
and other contamination. There is no need to clean the inside. Use a soft cloth
dampened with a mild solution of detergent and water. Do not use abrasive cleaners.
PREPARATION FOR USE
General
This section describes the initial preparations required when the Model A362 is
rst placed into operation. Review the Safety guidelines provided below, before
proceeding.
Shipping Information
The Model A362 is packaged and shipped in a foam-packed container. This manual
will be included with the instrument. Upon receipt of the the instrument, make a
thorough inspection for proper contents and possible shipping damage. If reshipment
is necessary, use the original container. If the original container is not available, use
any suitable substitute that is rigid and of adequate size. Wrap the instrument in
paper and surround with at least 100 mm (four inches) of shock absorbing material.
Safety
WARNING: THIS INSTRUMENT IS FOR INVESTIGATIONAL USE ONLY IN
ANIMALS OR OTHER TESTS THAT DO NOT INVOLVE HUMAN SUBJECTS.

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Power Source
This instrument is intended to operate from a power source that will not apply
more than 250 volts rms between the supply (mains) conductors or between either
supply conductor and ground. A protective (safety) ground connection by way of the
grounding conductor (green with yellow stripe) in the power cord is essential for safe
operation.
Grounding the Instrument
This instrument is grounded through the grounding conductor of the power cord. To
avoid electrical shock, plug the power cord into a properly wired receptacle before
connecting to the instrument output terminals. A protective ground connection by
way of the grounding conductor in the power cord is essential for safe operation.
WARNING: YOU MUST NOT REMOVE OR IN ANY WAY BYPASS THE
GROUNDING PIN OF THE POWER CORD.
Use the Proper Power Cord
Use only the power cord specied for your instrument and locale. Use only a power
cord that is in good condition.
Use the Proper Fuse
To avoid a re hazard, use only the fuse specied for your instrument. Replacement
fuses shall be identical in type, voltage rating, and current rating.
Do Not Operate in Explosive Atmospheres
To avoid explosion, do not operate this instrument in an atmosphere of explosive
gases.
Do Not Remove Cover
To avoid personal injury, do not remove the cover from this instrument. Do not
operate the instrument without a properly installed cover.

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INSTALLATION
Input Power
CAUTION The Model A362 may be damaged if the Line Voltage Selector switch is
not set to match the applied AC power source.
This instrument operates from either a 120V or 240V nominal AC power source. The
rear panel is marked at the factory with the user’s expected mains power. Before
connecting the power cord, verify that, in fact, the correct mains power setting was
provided. If any doubt remains, the internal Line Voltage Selector switch may be
adjusted.
WARNING: BEFORE REMOVING THE COVER, DISCONNECT THE
INSTRUMENT FROM THE AC POWER SOURCE.
The switch is located inside the instrument. To verify the voltage setting:
1. Remove the four screws from the bottom.
2. Remove the instrument cover by sliding it straight backward.
3. Locate the slide switch on the printed wiring board and slide to the appropriate
voltage setting. The actuator is marked and the visible marking is the actual volt-
age setting, i.e. 115V or 230V.
4. Reassemble the instrument by reversing the order of the above steps.
Output Fuse
WARNING: BEFORE ATTEMPTING FUSE REPLACEMENT, DISCONNECT THE
INSTRUMENT FROM THE AC POWER SOURCE.
The instrument contains one fuse, located inside, on the printed wiring board. To
obtain access to the fuse, follow the steps given above for removing the cover. Verify
that the fuse contained in the fuseholder matches the values marked on the board. If
necessary, replace the fuse with the type and rating specied.

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DECLARATION OF CONFORMITY

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* Electrodes, batteries and other consumable parts are warranted for 30 days only from the date on which
the customer receives these items.
Warranty
WPI (World Precision Instruments, Inc.) warrants to the original purchaser that this equipment, including its
components and parts, shall be free from defects in material and workmanship for a period of one year* from
the date of receipt. WPI’s obligation under this warranty shall be limited to repair or replacement, at WPI’s
option, of the equipment or defective components or parts upon receipt thereof f.o.b. WPI, Sarasota, Florida
U.S.A. Return of a repaired instrument shall be f.o.b. Sarasota.
The above warranty is contingent upon normal usage and does not cover products which have been
modied without WPI’s approval or which have been subjected to unusual physical or electrical stress or on
which the original identication marks have been removed or altered. The above warranty will not apply if
adjustment, repair or parts replacement is required because of accident, neglect, misuse, failure of electric
power, air conditioning, humidity control, or causes other than normal and ordinary usage.
To the extent that any of its equipment is furnished by a manufacturer other than WPI, the foregoing
warranty shall be applicable only to the extent of the warranty furnished by such other manufacturer. This
warranty will not apply to appearance terms, such as knobs, handles, dials or the like.
WPI makes no warranty of any kind, express or implied or statutory, including without limitation any
warranties of merchantability and/or tness for a particular purpose. WPI shall not be liable for any damages,
whether direct, indirect, special or consequential arising from a failure of this product to operate in the manner
desired by the user. WPI shall not be liable for any damage to data or property that may be caused directly or
indirectly by use of this product.
CLAIMS AND RETURNS
• Inspect all shipments upon receipt. Missing cartons or obvious damage to cartons should be noted on the
delivery receipt before signing. Concealed loss or damage should be reported at once to the carrier and
an inspection requested. All claims for shortage or damage must be made within 10 days after receipt of
shipment. Claims for lost shipments must be made within 30 days of invoice or other notication of shipment.
Please save damaged or pilfered cartons until claim settles. In some instances, photographic documentation
may be required. Some items are time sensitive; WPI assumes no extended warranty or any liability for use
beyond the date specied on the container.
• WPI cannot be held responsible for items damaged in shipment en route to us. Please enclose merchandise
in its original shipping container to avoid damage from handling. We recommend that you insure merchandise
when shipping. The customer is responsible for paying shipping expenses including adequate insurance on all
items returned.
• Do not return any goods to WPI without obtaining prior approval and instructions (RMA#) from our returns
department. Goods returned unauthorized or by collect freight may be refused. The RMA# must be clearly
displayed on the outside of the box, or the package will not be accepted. Please contact the RMA department
for a request form.
• Goods returned for repair must be reasonably clean and free of hazardous materials.
• A handling fee is charged for goods returned for exchange or credit. This fee may add up to 25% of the sale
price depending on the condition of the item. Goods ordered in error are also subject to the handling fee.
• Equipment which was built as a special order cannot be returned.
• Always refer to the RMA# when contacting WPI to obtain a status of your returned item.
• For any other issues regarding a claim or return, please contact the RMA department.
Warning: This equipment is not designed or intended for use on humans.

USA
International Trade Center, 175 Sarasota Center Blvd., Sarasota FL 34240-9258
Tel: [phone] • Fax: [phone] • E-mail: [email protected]
UK
1 Hunting Gate, Hitchin, Hertfordshire SG4 0TJ
Tel: [phone] • Fax: [phone] • E-mail: [email protected]
Germany
Saarstraße 23, D-61169 Friedberg (Hesson), Germany
Tel: [phone] • Fax: [phone] • E-mail: [email protected]
China & Hong Kong
WPI Shanghai Trading Co., Ltd.
Rm 25e, No8 Dongfang Rd., Pudong District, Shanghai, 200120 PR China
Tel: [phone] • E-mail:[email protected]
Brazil
Av. Conselheiro Nébias, 756 sala 2611, Santos-CEP: 11045-002, São Paulo Brazil Tel: (013) 406-
29703 • E-mail: [email protected]
Internet
www.wpiinc.com • www.wpi-europe.com • www.wpiinc.cn • www.wpibrasil.com.br