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- Page 1 BASEWEST Operating & Maintenance Manual Model TS-420 Test Set Revision A 22 June 2010 BaseWest Inc. 4240 116 Ave N, Clearwater, FL 33762 Tel: 727 / 573-2700 • Fax: 727 / 573-4307 E-mail: info@basewest.com www.basewest.com 25-60-41...
- Page 2 Model TS-420 Test Set General This operating and maintenance instruction covers the BaseWest Model TS-420 test set - a rechargeable, handheld instrument with a digital LCD readout designed specifically for testing airline escape slide lighting systems and their components. The Model TS-420 comprises the following functions: •...
- Page 3 Theory of Operation General The Model TS-420 provides for voltage testing of escape slide lighting system battery packs, and electrical current testing of escape slide lighting harnesses. A special interface connector provides for full system test of an installed battery pack and lighting harness system through a mating test connector found on most battery packs.
- Page 4 (Amber LED) Mode Selector Switch (Voltmeter/Ammeter) Load Selector Switch Figure 2. TS-420 – General Arrangement Press to Test Battery Testing (Voltmeter Mode) Move the Mode Selector switch to VOLTMETER. Connect the 4-contact test lead on the battery pack to the mating receptacle on the connector block of the instrument (See Figure 3).
- Page 5 BASEWEST Operating & Maintenance Manual Model TS-420 Test Set Ammeter/Power Supply Voltmeter Connection connection for for Battery Test Light Harness Test Figure 3. Connector Block Arrangement System Test connection for Battery & Light Harness Test Light Harness Testing (Ammeter Mode) Select the Mode Selector switch to the AMMETER position.
- Page 6 NOTE: International customers must use an appropriate adapter for 110VAC service, or a converter for 220VAC service, depending on the country. b) Connect the charger output plug into the receptacle in the side of the TS-420 test set. 25-60-41 Page 6 of 10...
- Page 7 BASEWEST Operating & Maintenance Manual Model TS-420 Test Set Charger Receptacle AC Charger Figure 4. Internal Battery Charging Arrangement P/N 36-1002 c) The battery should be left on charge for approximately eight (8) hours, or overnight. After charging, disconnect the charger and place the Mode Selector switch into the AMMETER position and Press-To-Test.
- Page 8 BASEWEST Operating & Maintenance Manual Model TS-420 Test Set b) Carefully remove the bottom portion of the instrument case and lay aside. Battery Pack Figure 5. Internal Battery Access Battery Connector c) Locate the battery lead wire, and follow it to the connector on the PC board. While securing the instrument with one hand, carefully disconnect the battery connector from the PC board and remove the battery.
- Page 9 Self-Test indicator is OFF - Test set requires servicing; return to BaseWest. e) LED meter should display milliamperes in the range of 0 to 1999 mA (no decimal) Care and Maintenance The TS-420 test set is a sensitive electronic instrument; it should be treated and protected with appropriate care. •...
- Page 10 Surface cleaning only with a slightly damped cloth (water or alcohol) is recommended. DO NOT use other solvents or cleaners. Calibration and Repair The TS-420 test sets should be calibrated in accordance with the user's quality assurance requirements. A separate calibration manual is provided; contact BaseWest for distribution.
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