User manual GAI-TRONICS 7245-003

[. . . ] In 24-volt systems, plan on several branch lines from the dc source with no more than six stations per branch. Where two or more stations are listed, the assumption is that they are evenly spaced along the cable. GAI-Tronics Corporation 400 E. Mohnton, PA 19540 USA 610-777-1374 800-492-1212 Fax: 610-796-5954 VISIT WWW. GAI-TRONICS. COM FOR PRODUCT LITERATURE AND MANUALS Model 7245-003 24 V DC Remote Subset Amplifier Enclosure Pub. 42004-261E Page: 2 of 11 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. [. . . ] This enclosure must be mounted within reach of these cables. Figure 1. Typical Flush-mount Installation The Model 7245-003 Indoor Enclosure is not supplied with openings for conduit or cable. Drill or punch these openings using the supplied template before mounting the enclosure. The best location for the conduit holes is along the top or bottom of the enclosure and near the rear surface. Avoid the top center as it may interfere with the plug-in amplifier receptacle. In extreme environments, extra precautions should be taken to improve system reliability. Side or bottom entry helps to prevent moisture from dripping onto the terminals or printed circuit boards. There are four 0. 312-inch diameter mounting holes in the corners of the amplifier enclosure. When mounting the enclosure, use caution to avoid damaging the terminal blocks inside. Install the connector guard over the remote cable plug using the screws provided as shown in Figure 3 to comply with NRTL requirements. f:\standard ioms - current release\42004 instr. manuals\42004-261e. doc 11/10 Model 7245-003 24 V DC Remote Subset Amplifier Enclosure Pub. manuals\42004-261e. doc 11/10 Model 7245-003 24 V DC Remote Subset Amplifier Enclosure Pub. 42004-261E Page: 6 of 11 Wiring Attach the conduit to the enclosure. Follow the wire colors carefully because the colors correspond to GAI-Tronics 60029 or 60038 Series multi-party cable. The wires must be spade-lugged and connected carefully and completely to the terminal block. Plug the subset connector into the receptacle located at the bottom of the enclosure. Insert the plug-in amplifier into the enclosure and secure the amplifier with four screws. Local Muting Figure 4 illustrates local speaker muting when stations are completely assembled and paging operation occurs. Normally, when the station button is pressed, the paging speaker connected to that station is silenced (muted) to prevent acoustic feedback to the handset microphone. However, while the handset is in use for party line conversations, the paging speaker is "live" to enable paging calls from other stations. Locate the lugged violet wire attached to terminal point 7 (mute) on the terminal block within the enclosure. After any muting changes are made, unpack the station amplifier and install. Mutual Muting In the event that feedback occurs within an area and repositioning of the system speakers does not help, mutual muting may be used to correct this problem. Perform the following steps to mutually mute adjacent amplifiers/handsets within a zone. [. . . ] 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. [. . . ]