Hubbell Stereo Amplifier 670 801 EX User Manual

Pub. 42004-615L2  
G AI - TRO NI CS® CO RPO RATI O N  
A
H U B B E L L C O M P A N Y  
Model 670-801-EX and 670-801-UL  
SmartSeries Amplifiers  
for CENELEC Zone 1 and UL Div. 1  
Confidentiality Notice  
This manual is provided solely as an operational, 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.  
Introduction  
The assembly described in this manual is an explosion-proof enclosure and intelligent speaker amplifier  
designed to be installed in hazardous areas where combustible gases exist or may exist. The extra thick  
cast aluminum enclosure, while not gas tight, is designed to withstand repeated internal explosions  
without expelling gases hot enough to ignite the external atmosphere. This is accomplished through the  
use of a precision-machined enclosure opening flame path that cools the exiting gases to a temperature  
below the flash point of the external, explosive atmosphere.  
How to Use the Assembly/Model  
Application  
The hazardous area SmartSeries amplifier is designed to provide clear communications even in high noise  
areas where explosive atmospheres exist or may exist.  
The Model 670-801-EX is BASEEFA approved to CENELEC Standards Ex dib for Zone 1, Group IIC  
T5.  
The Model 670-801-UL is approved by Underwriters Laboratories for:  
Class 1, Div. 1, Groups C and D  
Class II, Div. 1, Groups E, F, and G  
Class III, Div. 1  
The intelligent SmartSeriesamplifier is designed for use on the GAI-Tronics single party or multi-party  
system cable. It includes micro-controllers that are programmed to:  
Receive and send data messages on the system cable  
Measure ambient noise and adjust speaker level  
Monitor and control optional external equipment  
GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 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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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
External  
The enclosure and cover are fabricated from thick aluminum castings. The cover and the enclosure mate  
at machined rims to form the flame path seal. The cover is secured to the enclosure with bolts around the  
perimeter. The enclosure entries are as follows:  
The Model 670-801-EX cable gland entries are shown in Figure 2:  
On the base: Three M25 entries, two fitted with plugs; and one M16 entry.  
Figure 2. Model 670-801-EX Cable Gland Entries  
The Model 670-801-UL conduit entries are shown in Figure 3:  
On the top: One 1½-inch NPT entry fitted with a plug, and one ¾-inch NPT entry.  
On the base: Two threaded 1½-inch NPT entries (one fitted with plug).  
Figure 3. Model 670-801-UL Top and Bottom Views  
NOTE: Ensure any unused openings are sealed with proper fittings per local standards.  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Internal  
The SmartSeries amplifier contains the following  
components:  
3.56 MAX  
(90.42)  
Chassis  
Bias Power Supply sub-assembly fixed to the front panel  
Speaker transformer fixed at the top of the chassis  
Base-16 printed circuit board assembly (PCBA) with a  
plug at the top, pointing to the rear  
FSK Modem PCBA fixed to the Base-16 PCBA  
CHASSIS  
GASKET  
Figure 4. SmartSeries Amplifier-Side View  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Block Diagram  
Figure 5. Model 670-801 Block Diagram  
As shown on Figure 5, P1 is the 16-pin male connector located on the back of the Base-16 PCBA. It  
plugs into the socket located inside the cast aluminum enclosure. The socket provides connection to the  
multi-party cable containing the page/party lines and ac power.  
The Base-16 PCBA conducts ac power to the Bias Power Supply PCBA through connector J6 and  
receives +5 V dc and +/-15 V dc in return. The Base-16 PCBA uses the bias supplies and also passes  
them (as well as control, monitoring, and line signals) to the FSK Modem PCBA via J1, a 24-pin stacking  
connector. Connector J2 on the Base-16 PCBA connects the speaker transformer for the station’s external  
speaker, and J3 connects optional external devices.  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Interfaces  
The unit interfaces to the multi-party cable and to the external loudspeaker, and auxiliary devices via P1,  
a 16-pin connector.  
Pin No.  
Function  
Description  
Pin No.  
Function  
Description  
1
2
3
4
5
6
7
8
Party line (L1)  
Page line (L1)  
Mute (L1)  
9
Party line (L2)  
Page line (L2)  
Mute (L2)  
PL_L1  
PL_L2  
PG_L2  
MT_L2  
AUX1IN*  
EGND  
SPKR_C  
N/C  
10  
11  
12  
13  
14  
15  
16  
PG_L1  
MT_L1  
AUX0IN*  
SPKR_8  
SPKR_16  
N/C  
Auxiliary input (0)  
Speaker (8-ohm)  
Speaker (16-ohm)  
No connection  
AC neutral  
Auxiliary input (1)  
Earth ground  
Speaker (common)  
No connection  
AC hot  
AC_N  
AC_H  
The P1 connections for the multi-party cable are separated from the speaker connections within the  
enclosure.  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Installation  
Before installing SmartSeries equipment, design the system layout taking into consideration personnel  
safety, operational function and convenience, and power cable length. In general, for 115 V ac systems  
the total power cable length should not exceed 1 mile (1.6 km), but the length of cable between the  
stations is not a critical factor.  
However, it is a good practice to run a separate power feed to each station located in hazardous areas.  
With a separate feed, individual stations can be de-energized for service or maintenance without affecting  
the power supply and operation of the other stations in the hazardous area.  
Mounting  
NOTE: The mounting surface must be able to support 55 lbs (25 kg).  
1. Remove the front panel. Allow the front panel to hang from the rear of the enclosure by means of  
two retaining straps during installation. The straps serve as personnel safety feature and as a  
safeguard designed to ensure the front panel flame path is not nicked, dented or otherwise damaged  
while mounting the enclosure.  
2. To maintain the explosion-proof integrity of the enclosure, all mounting hardware is located in non-  
intrusive mounting holes under the front panel. The suggested mounting height of the station is 54  
inches (137cm). Use standard 1/2-inch socket head cap screws or M12 bolts to secure the enclosure  
to a flat mounting surface. See Figure 6 below for mounting hole dimensions.  
Figure 6. Shows mounting holes with dimensions.  
3. After the enclosure is securely mounted, remove the plug-in amplifier:  
Remove the four screws that secure the amplifier to the standoffs, and retain.  
Pull the amplifier straight toward you to disengage the 16-pin connector from the enclosure.  
Set the amplifier aside in a safe place while completing the installation.  
NOTE: The following instructions are provided to ensure compliance with the appropriate approval  
standards. Select the version that applies to the equipment you have purchased based on approval agency  
jurisdiction.  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
UL Version  
1. Install the conduits for system and speaker cable and make connection to the enclosure. External  
conduits in Class I, Groups C, and D must have gas seals located not more than 18 inches (457mm)  
from the amplifier enclosure. External conduits in Class II and Class III areas must also have seals if  
the conduit is not dust-tight.  
2. Feed the wiring through the conduit and into the enclosure.  
3. Make connections by following the wire colors as illustrated in Figure 7. The wire colors correspond  
to GAI-Tronics 60029 and 60038 Series system cable and to 60021 for speaker cable.  
4. Connect the wires carefully and completely to the compression terminal block. An improper  
termination may result in diminished station performance.  
5. Install the amplifier by aligning the 16-pin connector to the enclosure socket and pushing straight in.  
Install the four screws retained previously.  
6. Lift the front cover and inspect the gasket and mating machined rims for nicks, scratches, or other  
damage that could compromise the integrity of the flame path.  
7. Secure the front cover in place using the bolts provided. Tighten the bolts alternately with bolts that  
are diagonally opposite to ensure that the cover is evenly sealed.  
NOTE: If acoustical feedback occurs between the speaker associated with the amplifier and the handset  
on a nearby station, the speaker can be muted by moving the violet wire on the enclosure on TB1 to  
terminal 7.  
EX Version  
Follow the mounting instructions described above.  
1. Make up cable core ends as required for connection to the terminal blocks in the enclosure base.  
2. Dismantle the outer parts of the 25mm Ex ‘d’ cable gland(s) for the system cable and 16mm Ex ‘d’  
cable gland for the speaker cable and thread them onto the cable(s) in the correct order.  
3. Feed the cable end(s) into the enclosure through the gland body or bodies and reassemble the outer  
gland parts as directed by the manufacturer.  
4. Before tightening of the gland assembly, check that the slack in the cable inside the enclosure is  
adequate but not excessive.  
5. Connect cable cores to terminals following the wire colors as illustrated in Figure 7. The wire colors  
correspond to GAI-Tronics 60071 and 60072 Series system cable and to 60070 for speaker cable.  
Connect the wires carefully and completely to the compression terminal block. An improper  
termination may result in diminished station performance.  
6. Install the amplifier by aligning the 16-pin connector to the enclosure socket and pushing straight in.  
Install the four screws retained previously.  
7. Lift the front cover and inspect the gasket and machined rim for nicks, scratches, or other damage that  
could compromise the integrity of the flame path seal.  
8. Secure the front cover in place using the bolts provided. Tighten the bolts alternately with bolts that  
are diagonally opposite to ensure that the cover is evenly sealed.  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
NOTE: If acoustical feedback occurs between the speaker associated with the amplifier and the handset  
on a nearby station, the speaker can be muted by moving the violet wire on the enclosure on TB1 to  
terminal 7.  
Figure 7. Wiring Detail  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Operation  
This unit amplifies page audio for broadcast over external speaker(s).  
Adjustments  
CAUTION  
It is necessary to open the explosion-proof enclosure to make adjustments. Make adjustments only  
when the conditions at your facility are such that no explosive atmospheres can be present.  
This assembly includes one control that permits adjustments to be made while the assembly is mounted in  
its enclosure but with the bolted cover removed. In addition there are several internal controls that are  
accessible only by removing the assembly from its enclosure.  
There is a user adjustment for setting the speaker amplifier gain for the SmartVolume™ feature, which  
has three components: Minimum Level, Offset Level, and VLC Level. Although they typically require no  
adjustments, these volume levels can be set with the User Level Adjustment control (labeled USER  
ADJ). Use a small flat-blade screwdriver with an insulated shaft at least 4 inches long to make  
adjustments.  
To access the USER ADJ control, perform the following steps:  
1. Unbolt and remove the front enclosure cover revealing the speaker amplifier.  
2. Loosen (do not remove) the two screws that secure the nameplate.  
3. Pivot the nameplate counterclockwise, exposing the access hole.  
A guide behind the access hole helps direct the screwdriver to the USER ADJ control.  
4. When you are done with the adjustment, pivot the nameplate clockwise into position, then tighten the  
two screws. Re-install the bolted cover.  
Minimum Level  
The Minimum Level adjustment sets the minimum output of the speaker amplifier. The amplifier can be  
set from minimum to full output (12 watts into 8 ohms) in 100 discrete steps, or no output. The factory  
default is step 20, providing 4 watts.  
To adjust the Minimum Level, perform the following steps:  
1. Turn USER ADJ fully counterclockwise and wait to hear a single beep over the associated speaker.  
This switches the speaker amplifier into the Minimum Level adjustment mode. If there is an audio  
signal on the page line when the amplifier enters this mode, you hear it over the associated speaker.  
Otherwise, you hear an amplifier-generated test tone.  
2. Turn USER ADJ clockwise to the desired minimum speaker volume level.  
The amplifier remains in the Minimum Level adjustment mode for as long as USER ADJ is varying.  
After USER ADJ has remained stable for five seconds, the amplifier returns to its normal operating  
mode.  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Offset Level  
The Offset Level adjustment causes the speaker amplifier to maintain a set difference between the  
ambient level and the speaker output level. The SmartVolume™ feature measures the ambient noise at  
the associated speaker and adds the Offset Level to set the speaker amplifier gain. This keeps page  
announcements louder than the ambient noise. The Offset Level can be set from 0 dB (the speaker output  
level is the same as the ambient level) to 49 dB. A speaker should be set for 6 to 10 dB louder than the  
ambient noise, so the factory default is 9 dB.  
To adjust the Offset Level, perform the following steps:  
NOTE: There must be enough ambient noise for the amplifier to sense. The exact level depends upon the  
speaker type, but it is typically approximately 80 dB.  
1. Turn USER ADJ fully clockwise and wait to hear two beeps over the associated speaker.  
This switches the amplifier into the Offset Level adjustment mode. If there is an audio signal on the  
page line when the amplifier enters this mode, you hear it over the speaker. Otherwise, you hear an  
amplifier-generated test tone.  
2. Turn USER ADJ counterclockwise to the desired speaker volume level.  
The amplifier remains in the Offset Level adjustment mode for as long as USER ADJ is varying.  
After USER ADJ has remained stable for five seconds, the amplifier returns to its normal operating  
mode.  
VLC Level  
The VLC Level adjustment sets the speaker amplifier gain for the Page Priority VLC feature to provide  
an emergency output level. The amplifier can be set from minimum to full output (12 watts into 8 ohms)  
in 100 discrete steps, or to no output. The factory default is step 10, but the System VLC Control feature  
is disabled.  
To adjust the VLC Level, perform the following steps:  
1. Have an assistant page from a station that forces the amplifier being adjusted into VLC mode.  
2. Turn USER ADJ fully counterclockwise and wait to hear two beeps over the amplifier’s associated  
speaker.  
This switches the amplifier into the VLC Level adjustment mode.  
3. Turn USER ADJ clockwise to the desired speaker volume level.  
The amplifier remains in the VLC Level adjustment mode for as long as USER ADJ is varying. After  
USER ADJ has remained stable for five seconds, the amplifier returns to its normal operating mode.  
Internal Adjustments  
This assembly includes additional internal control, the FSK Transmit Level, which affects system  
performance. Therefore, only qualified GAI-Tronics personnel with the appropriate test equipment  
should make any adjustments. The function and location are included for information only. Tampering  
with this control may void your warranty.  
FSK Transmit Level  
The control labeled XMIT LEVEL adjusts the level of the frequency shift keying (FSK) signal transmitted  
to the page line.  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Maintenance  
In order to verify and ensure explosion-proof integrity, perform regular preventive maintenance and  
inspection checks on the GAI-Tronics explosion-proof stations. The GAI-Tronics Field Service  
Department can formulate a service contract to suit specific preventive maintenance needs.  
CAUTION  
Remove power from the enclosure before performing any maintenance.  
Use the following procedures to ensure reliable operation of your equipment:  
1. Remove power from the enclosure.  
2. Unbolt the cover. Remove the amplifier from the enclosure.  
3. Visually check the interior of the enclosure for signs of contamination. Contamination inside the  
enclosure could mean that the conduit seals or cable gland seals have been compromised.  
4. Ensure the gasket and hardware are in place and in good condition. Reinstall the amplifier and  
enclosure cover. Restore power to the unit.  
In certain circumstances, it may be necessary to re-terminate some or all of the enclosures in a system.  
When this is done, strip the wires back to clean copper, and make wire connections to each terminal.  
If contaminants from the plant atmosphere have entered the enclosure, clean the interior. Often, a solvent  
contact cleaner is not strong enough to wash away the buildup. If this occurs, try the following steps:  
1. Disconnect power from the enclosure.  
2. Disconnect all wires from the terminal strip inside the box.  
3. Spray the interior of the enclosure with a heavy-duty, surfactant-type, water-based industrial cleaner.  
Heavy concentrations of contaminants may be scrubbed with a scrub pad or a soft brush.  
4. Rinse the interior of the box with a water spray, and blow out any excess water using compressed air.  
5. Apply a coating of water-displacement solution followed by contact cleaner and compressed air.  
6. Strip wires back to clean copper before reconnections.  
7. Reinstall the amplifier and enclosure cover. Reapply the power.  
Troubleshooting  
The following suggestions are provided to aid a technician in troubleshooting.  
Problem  
Solution  
Feedback during page of nearby  
handset station.  
Use the muting feature in the amplifier enclosure at the terminal  
blocks.  
Crosstalk  
One or more system cable pairs may be improperly terminated.  
Visually inspect the system cable for accidental crossing of cable  
pairs or grounds.  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Software Configuration  
The unit has the following versions of software:  
PCBA  
Base-16 PCBA  
FSK modem PCBA  
Device  
U2  
Part Number  
50086-014  
U1  
49023-030  
The SmartSeries Amplifier has software on U2 of the Base-16 PCBA and on U1 of the FSK Modem  
PCBA. This software provides the following standard programmable features, accessible from the SST  
Configuration screen when the station is in an ADVANCE system:  
Page Priority VLC Mode—determines the condition for setting the speaker amplifier output to the  
User Page Priority VLC (Volume Level Control) Output Level by comparing the incoming page’s  
Page Priority Level with the station’s Page Priority Level (VLC Page Priority). Default setting:  
disabled.  
Page Trip Level for Speaker Amplifier—the minimum trip level for detecting a page in progress.  
Default setting: 0.44 Vpeak.  
Pass Level for Speaker Amp HC—the minimum expected test tone voltage level for supervision of  
the speaker amplifier. Default setting: 0.2 Vpeak.  
Pass Level for Speaker/Wire HC—the minimum expected ambient level for supervision of the  
speaker wire. Default setting: 35 dB SPL.  
Smart Party Line EOL—enables or disables the station as an end-of-line device for supervision of  
party line 1, for a station configured either as a Smart Handset Dual Party Select device or a Smart  
Handset Party Select device. Default setting: disabled.  
SmartSeries Station RTU Monitored Input Process—selects the input mode for each IDC. Default  
setting: disabled.  
SmartSeries Station RTU Power Relay Process—selects the relay group and zone associated with an  
indicating appliance circuit (IAC). Default setting: disabled.  
Speaker Amplifier Clip Level—the maximum output level of the speaker amplifier. Default setting:  
2.16 Vpeak.  
System VLC Control—enables or disables VLC Mode. Default setting: disabled.  
System VLC Group—the group number for VLC operation. Default setting: 0.  
VLC Page Priority—the station’s incoming Page Priority Level. Default setting: 0.  
The following standard programmable features are also accessible from the User Level Adjustment  
control on the front panel:  
User Minimum Page Output Level (or Minimum Level)—the minimum page output level of the  
speaker amplifier. Default setting: 4 watts.  
User Offset Added to Ambient (or Offset Level)—the amount of gain added to the ambient level so  
that an incoming page is not lost in the noise. Default setting: 9 dB.  
User Page Priority VLC Output Level (or VLC Level)—the page output level of the speaker amplifier  
when the station is in VLC Mode. Default setting: 1 watt.  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Specifications  
Electrical  
Voltage .............................................................................. 90 to 140 V ac (120 V ac nominal) 50/60 Hz  
Power consumed ......................... Zero/maximum signal (12 watts): 15 VA, 10.5 watts/ 53 VA, 34 watts  
Speaker Amplifier  
Output.......................................................................... 12 watts minimum, with nominal supply voltage  
Output limiter..........................................................................2.16 Vpeak (adjustable via configuration)  
Voltage Gain................................................................................................26 dB maximum, adjustable  
Frequency Response........................................................................575-4500 Hz, +0/-3 dB ref. to 1 kHz  
Distortion............................................................................................1% max. THD @ 1 kHz, 12 watts  
Input Impedance.......................................................................50 k-ohms nominal without FSK modem  
16 k-ohms nominal with FSK modem  
Audio input from line...........................................1.5 Vrms nominal (depends on distance) from 33 ohm  
FSK Modem  
FSK output to line .............................................................................0.7 Vrms, 2 Vp-p into 33 ohm load  
FSK frequency range.............................................................................................................. 30-33 kHz  
SmartVolume™  
Dynamic range (low gain) ........................................................................................ 62 to 100 dBA SPL  
Frequency characteristics...............................................................................630 Hz LPF (-6 dB/octave)  
Offset (above ambient) User Level Adjust ...............................................................................0 to 25 dB  
Minimum user adjust......................................................................................... Off; 85 to 125 dBA SPL  
Speaker/Wire Monitor  
Dynamic range (high gain) ............................................................................................27 to 65 dB SPL  
Frequency characteristics...............................................................................630 Hz LPF (-6 dB/octave)  
Fault setpoint............................................................................35 dB SPL (adjustable via configuration)  
Note: The measured SPL varies for each speaker type.  
Recommended environment ................................................................................. Greater than 50 dB SPL  
Mechanical  
Dimensions ............................................ 14.4 H × 14.4 W × 7.83 D inches (367 × 367 × 199 mm) overall  
Enclosure material........................................................................................................... LM25TF, Epoxy  
Internal controls ........................................................................................................................Line level  
Environmental  
Operating and storage temperature range ..............................................-4º F to +151º F (-20º C to +66º C)  
Humidity.................................................................................................................. 95% non-condensing  
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Model 670-801-EX and 670-801-UL SmartSeries Amplifiers  
Replacement Parts  
Model Number  
Description  
751-801  
Amplifier  
12555-001  
12557-001  
12558-001  
12530-001  
FSK PCBA Kit  
Base-16 PCBA Kit  
Bias Power Supply PCBA Kit  
Transformer/Connector Subassembly  
Reference Material  
Reference to Assembly/Model Drawings  
Published by  
GAI-Tronics  
GAI-Tronics  
Title  
GAI-Tronics Ref. No.  
222-143  
SmartSeries Amplifier Enclosure Outline drawing  
SmartSeries Plug-in Amplifier Outline drawing  
71846  
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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 GAI-  
Tronics 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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