null  User manual
Pub. 42004-140E
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
Installation of 700 Series
24 V DC Page/Party® Systems
Confidentiality Notice
This manual is provided solely as an operation, installation, and maintenance guide and contains sensitive
business and technical information that is confidential and proprietary to GAI-Tronics. GAI-Tronics
retains all intellectual property and other rights in or to the information contained herein, and such
information may only be used in connection with the operation of your GAI-Tronics product or system.
This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any third party.
General Information
The GAI-Tronics Page/Party® system is a modular industrial communication system incorporating from
two to possibly hundreds of stations. Available in several forms, each station includes a handset, two
amplifiers (one for the handset and the other to drive one or more paging speakers), associated controls,
and a paging speaker (usually mounted separately). All stations are wired in parallel and additional
stations may be added at any time.
A GAI-Tronics Page/Party® system layout should be planned in advance of installation. Select handset
station locations carefully, taking convenience, accessibility, and personal safety into account. The
quantity and location of paging speakers must be carefully considered, particularly in areas of high
ambient noise or reverberation.
The speaker amplifier built into each station drives one horn-loaded paging speaker. If additional paging
speakers are needed, separate speaker amplifiers can be added to the system. In quiet areas, such as
offices, several paging speakers can be connected to a single station.
Please refer to Publication 42004-135, Speaker Installation, or consult with a GAI-Tronics sales
representative for additional system planning information.
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374  800-492-1212  Fax: 610-796-5954
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
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Installation of GAI-Tronics 700 Series 24 V DC Page/Party Systems
Pub. 42004-140E
Page 2 of 13
Power Source Considerations
WARNING
NEVER connect 24 V dc Page/Party® equipment to a supply voltage in excess of 28.8 V dc or
equipment damage may result.
The GAI-Tronics 24 V dc Page/Party® system equipment is designed to operate from a 24 V dc
rechargeable battery. A battery charger may be connected to the battery to maintain the charge.
CAUTION
Under no condition should this equipment be operated from a battery charger without the batteries
connected. Most chargers have an unloaded output of 35 to 45 volts, which can damage equipment
designed for nominal 24 volts.
Ground the negative side of the battery system at only one point to ensure hum and noise-free operation.
In planning a GAI-Tronics Page/Party® system using 24 V dc stations, careful consideration must be
given to power cable losses. In order to use the same cable as used in 120 V ac systems, the installer is
restricted to cable length and the number of units connected in parallel for dc power on one cable.
All units are wired in parallel. Good planning will minimize the cable required for each installation.
GAI-Tronics can supply multi-conductor cable designed especially for this application. Additionally, for
ease of installation GAI-Tronics cable is color-coded to match the termination points in our enclosures.
The number, size and color-coding of conductors are listed in the accompanying system connection
diagrams.
When installing an add-on station, consult the 24 V dc system layout diagrams at the end of this manual.
These figures, when used in conjunction with the station installation information and cable layout guide,
should provide all the information necessary to install additional Page/Party stations.
In 24-volt systems, plan on several branch lines from the dc source with no more than six stations per
branch. One branch could span up to 4,000 feet for a single station. The Maximum Cable Distance Table
lists the limits. Where two or more stations are listed, the assumption is that they are evenly spaced along
the cable.
Each amplifier contains two fuses on the PCBA in the 24 V dc input to protect and isolate the handset and
speaker amplifier circuitry in the event of a failure. Power line wiring to each amplifier or group of
amplifiers should have a fuse or circuit-breaker to protect against wiring failures.
If cable with No. 14 AWG power line conductors is used, a 15-amp fuse or circuit breaker should be
installed for each branch line at the point it connects to the battery. Fuse or circuit breaker rating is
determined by the size cable used in the branch. Consult the National Electrical Code (NFPA70) or
Canadian Standards Association (CSA 22.1) for the maximum allowable capacity of the wire used.
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Maximum Cable Distance in Feet*
Number of
Units
No. 14 AWG
Total / Between
No. 12 AWG
Total / Between
No. 10 AWG
Total / Between
No. 8 AWG
Total / Between
1
977 / 977
1,554 / 1,554
2,471 / 2,471
3,931 / 3,931
2
651 / 325
1,037 / 518
1,648 / 824
2,620 / 1,310
3
489 / 163
777 / 259
1,236 / 412
1,966 / 655
4
391 / 98
622 / 155
988 / 247
1,572 / 393
5
325 / 65
518 / 103
823 / 165
1,310 / 262
6
279 / 46
444 / 74
706 / 117
1,123 / 187
9
196 / 21
311 /34
494 / 55
786 / 87
*Based on the following assumptions:
 Continuous tone (alarm) signals driving each station’s speaker amp to a maximum of 12 watts.
NOTE: If the station is used for speech (audio) signals only, the distances stated above can be
multiplied by a factor of 2 because speech signals do not have the energy content that a
continuous tone has; therefore, they do not require as much average current and thus less cable IR
drop will result.
 GAI-Tronics-supplied cable is used.
 Wire resistance (ohms) is the nominal value for the applicable AWG at 1,000 feet of bare copper,
stranded wire @ 20º C (68º F). Wire resistance values used are as follows:
No. 14 AWG = ~2.525 ohms; No. 12 AWG = ~1.588 ohms; No. 10 AWG = ~0.999 ohm; No. 8 AWG = ~0.628 ohm




DC V at cable run’s feed point (Float charge of connected batteries) = ~26.6 V dc
DC V at the last unit in cable run = 21 V dc minimum
Station unit current draw (I) is the same regardless of the unit’s placement along the cable run for
ease of calculation. (1.1 amperes when unit is producing a 12-watt sine wave output.)
Distances reflect a 3% reduction for margin of error.
For conditions other than above, the following formula may be helpful in calculating the approximate
maximum distance for a SINGLE station.
For CONTINUOUS tone applications with minimum distortion:
For SPEECH operation only, multiply the above result by a factor of 2.
Example: What is the approximate maximum distance for a single dc station if the voltage feed is 27.5 V
dc and a No. 14 AWG wire is used @ 20º C?
Info:
 No. 14 AWG @ 20º C = ~0.002525 ohm per foot  2 for LOOP R
 VFEEDPOINT = 27.5 V dc
Solution:
(27.5 V – 21 V) / ((2  0.002525 ohm per foot)  1.1 amps)
= 6.5 / 0.005555
= 1,170 feet (for CONTINUOUS TONE signal), or up to ~2,340 feet (factor of 2) for SPEECH signals
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Installation of GAI-Tronics 700 Series 24 V DC Page/Party Systems
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Installation Procedure
Step 1 — Electrical Noise Considerations
When planning your system, consider the following suggestions to avoid electrical noise caused by slip
rings and silicon control rectifier (SCR) power supplies.
Slip Rings. Use a radio frequency (RF) alternative and avoid using slip rings as audio conductors. Slip
rings are a source of electrical noise and are not reliable.
SCR Power Supplies. If the Page/Party® system is being installed in areas where SCR power supplies are
used to power motors or other heavy equipment, consider using one or all of the following four
recommendations to reduce electrical noise.
1. Separation—Locate the Page/Party® system cables as far as possible from the SCR power supply
input or output cables. Electrical coupling between cables is reduced by the square of the distance
between the cables.
2. Shielding—Use shielded (armored) system cables if the cable must be run in the same bundle or cable
tray with the SCR power supply cables. Shielded cables reduce capacitive coupling between SCR
power supply cables and Page/Party® audio cables.
3. Fiber Optic Cables—Use audio cables with fiber optic cables in cable trays as an alternative to
shielded cables. Fiber optic cables are immune to SCR-generated electrical noise.
4. Isolation—In 24 V dc systems, the battery/battery charger usually provides isolation from the SCR
noise on the ac power system. Cable separation and shielding as mentioned above still apply.
NOTE: Avoid battery chargers that use SCRs in their design.
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Installation of GAI-Tronics 700 Series 24 V DC Page/Party Systems
Step 2 — Mounting of Station and Speaker Amplifier Enclosure
Each Page/Party® system station includes a plug-in amplifier that mates with a fabricated steel, cast
aluminum, or molded reinforced non-metallic enclosure. Each enclosure provides a terminal strip for
connecting inter-station cable.
Enclosures are packed separately from plug-in amplifiers at the factory, allowing the amplifiers to remain
protected while the enclosures are installed and wired, which is particularly important during system
installation in areas under construction.
The 16-gauge steel enclosures do not provide any openings for conduits or cables, because the location of
these varies with each installation. Drill or punch the necessary openings before mounting the enclosure.
Locate the openings either along the top or bottom of the enclosure and near the rear surface. Avoid the
top center because of possible interference with the plug-in amplifier receptacle. A drill template is
supplied with each enclosure.
Cast aluminum enclosures are drilled and tapped on the top and bottom for specially-designed hub plates.
Unless special arrangements are made, the enclosures include plates for single 1-1/4 conduit. Plates for
single 1/2 inch or 1-1/2 inch, or dual 1-1/4 inch are available.
The molded enclosures are supplied without any conduit openings. Sealed threaded hubs, such as Myers
“Scru-tite,” are recommended. A drill template is supplied with each enclosure.
CAUTION
Use caution when drilling holes to avoid damaging internal electrical components and wiring.
Suggested mounting height for all station enclosures is 54 inches.(137 cm). Subsets used with remote
subset amplifiers are supplied with 8-foot (244 cm) cables. Enclosures for remote subset amplifiers must
be mounted within reach of the 8-foot cable. Desktop or desk-edge stations enclosures are often mounted
in the knee-well of the desk.
System
Enclosure
Amplifier
Subset
Single Party Line
702, 732, 733
701
None
Single Party Line
7245
723
711, 716, 726
Multiple Party Line
703, 7325, 7335
701
None
Multiple Party Line
7245
723
7115, 7165, 7265
NOTE: The above stock numbers are simplified. Most stock numbers include a single digit letter or
three-digit suffix (i.e. 702A, 711-101).
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Installation of GAI-Tronics 700 Series 24 V DC Page/Party Systems
Step 3 — Mounting of Line Balance Assembly
Each GAI-Tronics Page/Party® system requires one line balance assembly. Its function is to properly
load the page and party line circuits. When using GAI-Tronics standard cable select a location that is:

near the electrical center of the system

adjacent to an indoor station in a relatively quiet area
For larger systems, or when using other types of cable, contact a GAI-Tronics representative for further
information. The line balance assembly has one electrical adjustment that must be made while using a
station. See Step 6. The following is the preferred method for mounting the line balance assembly is as
follows:
1. Suspend the assembly from the lower side of the indoor wall station using a 1-inch conduit nipple
(not supplied).
2. Connect one twisted pair wire for the page circuit and another for each of the party lines between the
terminal blocks of the line balance assembly and the associated indoor wall station.
3. Make the wiring connections between the 305 Series Line Balance Assembly and the station
enclosures in accordance with the wiring diagrams at the end of this publication.
Step 4 — Installation of Inter-station Conduit and Cable
Inter-station cables are generally installed in cable trays or conduit. To assist in determining the conduit
sizes required, the outside diameters of the GAI-Tronics cables discussed in this publication are listed in
the following table. Size and installation of conduit and cable must meet the requirements of applicable
electrical codes.
A ground conductor, with green/yellow insulation,
should be included with cable in any area where no
conduit or non-metallic conduit is used. Non-metallic
enclosures used with metallic conduit and cable without
a ground conductor require a bond between the
conduit(s) and the ground terminal (point 3) within the
enclosure.
Cable
Conductors
O.D.
60038-101
8
0.60 inches
(15.1 mm)
60029-101
16
0.68 inches
(17.2 mm)
Where GAI-Tronics cable is installed, each conductor should be lugged and attached to the terminaleither in accordance with the color code shown on the applicable accompanying diagram, or in
accordance with special drawings provided for this purpose.
Exception: Some cables have an orange “spare” conductor. Unless otherwise instructed, this
should be insulated and not connected to the terminal strip(s) in the enclosures.
GAI-Tronics cable is considered to be a Class 1 cable (maximum voltage is less than 600 V). In a cable
tray, Class 1 cable may only be grouped with other Class 1 cables. Long runs of GAI-Tronics cable in
proximity to 600-volt cable may cause an undesirable amount of hum being induced onto the Page/Party®
system’s signaling lines. To reduce undesired hum, it is recommended that runs of cable over ½ mile be
separated from 600-volt cable by a minimum of 12 inches.
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Step 5 — Installation of Amplifiers and Subsets
One of the many features of GAI-Tronics Page/Party® system equipment is automatic speaker muting.
When the push-to-page switch is pressed at a particular station, the paging speaker connected to that
station is silenced, preventing acoustic feedback to the handset microphone. However, while the handset
is in use for the party line conversations, the paging speaker is still live to paging calls from other stations.
For cases where the muting feature is not necessary or may be a disadvantage, it can be defeated as
outlined below.
Muting Defeat Instructions
1. Locate lugged violet wire attached to terminal point 7 (mute) on the terminal block within the
enclosure for station to be modified.
2. Transfer lugged violet wire to terminal point 8 (Page L1).
After making any necessary muting changes, unpack and install the amplifier for each station. Also,
unpack remote subsets (for desktop, desk-edge or panel mount stations) and plug each into the bottom
sides of the amplifier enclosure. Please see the chart on page 5 for series numbers covered by this
bulletin.
Step 6 — Checkout and Adjustment
Test all field wiring connections (page line, party line(s), mute, dc power and speaker) between stations,
and complete the line balance assembly installation before checkout begins. Ensure that all handsets are
on-hook.
1. Apply dc power, and check the station next to the line balance assembly.
2. Press the push-to-page switch (in the handset handle on some stations) and speak directly into the
microphone of the handset. The broadcast should be heard at all paging speakers in the system except
those associated with the station under test.
If working properly, very little or none of your own voice (sidetone) is heard from the handset
earpiece. If the line balance assembly is not connected properly, there will be a high level of
sidetone, perhaps enough to cause feedback.
Adjust the line balance assembly to optimize sidetone rejection on the page line. If the system is
complete when the first station is checked, adjust the line balance assembly as noted below.
Do not adjust station (amplifier) controls until the line balance assembly is adjusted.
3. Release the push-to-page switch and check the party line(s) sidetone level by speaking into the
microphone of the handset.
If working properly, very little or none of your own voice is heard from the handset earpiece. This
sidetone rejection only occurs if the line balance assembly is properly connected because it contains a
fixed resistor load for each party line. In addition, no party line adjustments are provided. Check
party line operation by conversing between two or more stations.
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Adjustment of the Line Balance Assembly
To set the control for proper page circuit loading:
1. Remove the line balance assembly cover to expose the line balance control.
2. Lift the handset from the adjacent handset hook and press the push-to-page button. From the normal
speaking distance (approximately ½ inch), blow steadily into the handset microphone and adjust the
control to minimize receiver sidetone. This adjustment needs to be made only at the initial
installation of the system. However, if in the future more than 10 speaker amplifiers are added or
deleted, repeat adjustment of page circuit loading.
3. After final adjustment, replace and secure the cover with the four mounting screws to discourage
tampering by unauthorized personnel and prevent entry of contaminants.
Each amplifier has a paging speaker volume control. It is accessible from the front panel with a
screwdriver, but is concealed behind the metal GAI-Tronics nameplate. To reach it, simply loosen (do
not remove) the two nameplate screws and pivot the nameplate around the left screw. This control is
adjusted at the factory so that a moderate page level produces 4 watts of output power.
Each handset/speaker amplifier has three additional internal controls: receiver volume control,
transmission volume control, and receiver sidetone control. All controls are accessible using a
screwdriver through the holes in the chassis. A fourth hole allows similar access from the rear of the
paging speaker volume control. Controls are factory-adjusted for optimum results in most industrial
applications. Do not readjust these controls to solve system problems until other possible faults are
checked, such as a missing, defective or improperly connected line balance assembly.
There is very little drop in receiver (handset earpiece) volume level due to system cable losses. Generally
speaking, the only reason to reset the receiver volume control is to compensate for extremely high
ambient noise levels (up to 110 dB), or to meet particular personnel needs.
At stations with cable lengths of 3,000 feet (1 km) or more from the line balance assembly, receiver
sidetone rejection is noticeably affected by cable impedance. Use the receiver sidetone control to
compensate for this by rotating the control clockwise approximately 60 degrees for 3,000 feet (1 km) of
cable length.
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Step 7 — Troubleshooting the System
Hum or Buzz
Hum or buzz on the page circuit (or one or more party circuits) is usually due to either a short circuit of
one of the two conductors for each circuit to ground or unbalanced leakage to ground. As long as the two
conductors are twisted pairs and there is no significant leakage paths or short circuits to ground, any
included voltages are the same on both conductors and do not appear across the line.
To correct the problem, locate the source of the ground. Using an ohmmeter, check various junction
points of the system wiring to determine the ground location. By going from one junction point to
another and disconnecting the affected circuit, the ground can be located. The fault could be within a
plug-in amplifier. However, most ground circuits occur in improper terminations or are caused by small
strands protruding from an improperly lugged wire.
Another source of grounds or near-grounded circuits are junction boxes filled or partially-filled with
water. In many cases, there are deposits in the boxes, which, when combined with water, produce
conductive or corrosive solutions. These deposits cause leakage between circuits and can corrode the
wire and terminals.
Isolation of field wiring may be necessary for test purposes. If such isolation removes the line balance
assembly from the operating portion of the system, a 33-ohm, 1/2-watt resistor should be connected
across L1 and L2 of the Page/Party® line circuits. These resistors must be removed after completion of
the tests.
Feedback or Distortion on the System
Each page and party circuit must be loaded to the optimum 33 ohms using the line balance assembly. If
the line balance is not connected or is defective, the system will have excessive gain and will break into
feedback quite easily. Voices will also be distorted, and there will be a high level of sidetone in the
handset receiver.
Each party line is terminated with fixed 33-ohm resistor in the line balance assembly. However, an
adjustable control is provided for the page line to compensate for the number of speaker amplifiers
connected to the system. Improper adjustment affects gain and increases the level of sidetone. Please
refer to specific instructions in Step 6 for adjusting the line balance assembly.
Very Low Audio Level on One or More Lines at all Stations
It is possible for the system, or part of the system, to function with a dead short across the page or party
circuits. If this occurs, the level of the system will be very low, decreasing to minimum level in the
vicinity of the short circuit. To locate the short circuit, it is necessary to proceed in the same way as
locating a ground - checking junction points with an ohmmeter.
Cross Talk
Cross talk, or inter-channel interference, is generally caused by accidental crossing of circuits in a
junction box. To check for this condition, measure resistance between circuits of the interfering channels.
The resistance should be infinite or a very high value. Leakage or shorts to ground in two or more
circuits can result in cross talk on those circuits.
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Audio Voltage
In a system that is operating properly, audio voltage read across any of the page or party circuits (L1 or
L2) will be 0.5 to 0.75 volts ac on peaks when an audio signal is present: i.e., someone speaking into a
handset. The voltage is proportional to the loudness of the person’s voice using the handset.
Static Charges
In many normal installations, induced ac voltage may be read from the conductors of the page and party
line circuits to ground. In many cases this voltage may be as high as 50 volts or more. This voltage is
induced into the circuits by capacitance to the ac power circuit (generally carried in the same cable and
also from power cables paralleling communication cables). This voltage is inconsequential and can be
ignored. Problems occur only if one side of the page or party circuit becomes grounded.
One Inoperative Station in a Working System
Except for a wiring error, an inoperative station indicates a defect in the amplifier at the station. This is
checked quickly by installing a spare amplifier or exchanging amplifiers with a properly operating station.
Special Note Regarding Installation
GAI-Tronics Page/Party® system equipment does not, in normal operation, produce arcs, sparks or heat
that would ignite industrial gases or dusts. Many standard GAI-Tonics products are NRTL-approved for
use in USA and Canada for intended use in specified Division 2 areas if properly installed and
maintained.
Proper installation is defined as (1) mounting and wiring per factory directions without unauthorized
modification and (2) following all requirement of the U.S. National Electric Code (NFPA - 70) or the
Canadian Electric Code (CSA Standard C22.1). Installers must be familiar with these codes and consult
the codes as required. The most applicable parts of the N.E.C. code are in articles 500-503.
The most applicable parts of the Canadian code are in Section 18. Some, but not all, significant points
are:
1. Conduits in a Class I, Division 2 area to or from a non-hazardous area or an adjacent Class I, Division
1 area must have approved seals in the boundary.
2. Conduits or raceways in a Class II, Division 2 or Class III area must have dust seals at entrances to
dust-tight equipment and at boundaries to other areas unless such conduits or raceways are also
dust-tight.
3. Explosion-proof (Division 1) equipment may be installed in a Division 2 area but must have the same
conduit and cable seals as if installed in the corresponding Division 1 area.
4. Sealing of multi-conductor cables or conduits containing multi-conductor cables in Class I, Division 1
or 2 areas must be around each conductor of the cable - except where type MI cable is used.
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Safe Power Connection/Disconnection
To satisfy Division 2 requirements, the equipment will not create arcs or sparks in normal operation when
completely installed and powered. Installing or removing an amplifier or plugging in a live enclosure is
not normal operation and can create arcs.
CAUTION
To guarantee safety, do not insert or remove equipment from live enclosures, unless the area is
known to be non-hazardous at the time.
A better arrangement uses a separate power disconnect, performed safely in either of two ways:
1. Explosion-proof disconnect switch (can be located in the Division 2 area).
2. Ordinary disconnect switch in a non-hazardous area (outside the Division 2 area).
Either method allows the use of the switch at all times. Connect field wiring as detailed in instructions
for the same equipment mounted in non-hazardous areas.
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Installation of GAI-Tronics 700 Series 24 V DC Page/Party Systems
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Warranty
Equipment.
GAI-Tronics warrants for a period of one (1) year from the date of shipment, that any
GAI-Tronics equipment supplied hereunder shall be free of defects in material and workmanship, shall
comply with the then-current product specifications and product literature, and if applicable, shall be fit
for the purpose specified in the agreed-upon quotation or proposal document. If (a) Seller’s goods prove
to be defective in workmanship and/or material under normal and proper usage, or unfit for the purpose
specified and agreed upon, and (b) Buyer’s claim is made within the warranty period set forth above,
Buyer may return such goods to GAI-Tronics’ nearest depot repair facility, freight prepaid, at which time
they will be repaired or replaced, at Seller’s option, without charge to Buyer. Repair or replacement shall
be Buyer’s sole and exclusive remedy. The warranty period on any repaired or replacement equipment
shall be the greater of the ninety (90) day repair warranty or one (1) year from the date the original
equipment was shipped. In no event shall GAI-Tronics warranty obligations with respect to equipment
exceed 100% of the total cost of the equipment supplied hereunder. Buyer may also be entitled to the
manufacturer’s warranty on any third-party goods supplied by GAI-Tronics hereunder. The applicability
of any such third-party warranty will be determined by GAI-Tronics.
Services.
Any services GAI-Tronics provides hereunder, whether directly or through subcontractors,
shall be performed in accordance with the standard of care with which such services are normally
provided in the industry. If the services fail to meet the applicable industry standard, GAI-Tronics will
re-perform such services at no cost to buyer to correct said deficiency to Company's satisfaction provided
any and all issues are identified prior to the demobilization of the Contractor’s personnel from the work
site. Re-performance of services shall be Buyer’s sole and exclusive remedy, and in no event shall GAITronics warranty obligations with respect to services exceed 100% of the total cost of the services
provided hereunder.
Warranty Periods.
Every claim by Buyer alleging a defect in the goods and/or services provided
hereunder shall be deemed waived unless such claim is made in writing within the applicable warranty
periods as set forth above. Provided, however, that if the defect complained of is latent and not
discoverable within the above warranty periods, every claim arising on account of such latent defect shall
be deemed waived unless it is made in writing within a reasonable time after such latent defect is or
should have been discovered by Buyer.
Limitations / Exclusions.
The warranties herein shall not apply to, and GAI-Tronics shall not be
responsible for, any damage to the goods or failure of the services supplied hereunder, to the extent
caused by Buyer’s neglect, failure to follow operational and maintenance procedures provided with the
equipment, or the use of technicians not specifically authorized by GAI-Tronics to maintain or service the
equipment. THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE IN LIEU OF AND
EXCLUDE ALL OTHER WARRANTIES AND REMEDIES, WHETHER EXPRESS OR IMPLIED BY
OPERATION OF LAW OR OTHERWISE, INCLUDING ANY WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Return Policy
If the equipment requires service, contact your Regional Service Center for a return authorization number
(RA#). Equipment should be shipped prepaid to GAI-Tronics with a return authorization number and a
purchase order number. If the equipment is under warranty, repairs or a replacement will be made in
accordance with the warranty policy set forth above. Please include a written explanation of all defects to
assist our technicians in their troubleshooting efforts.
Call 800-492-1212 (inside the USA) or 610-777-1374 (outside the USA) for help identifying the
Regional Service Center closest to you.
(Rev. 10/06)
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