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Summary of Contents for mcmurdo S4
- Page 1 S4 RESCUE SART Service Manual Service Service Service...
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Page 3: Table Of Contents
The information must not be used except for the agreed purpose. Unauthorized use, reproduction or issue to any third party is not permitted without the prior written authority of McMurdo. This document is to be returned to McMurdo when the agreed purpose is fulfilled. -
Page 4: Introduction
Each SART version may be supplied as one of three options: SART with pole and bulkhead mount SART with pole only SART only 1.3. Revision history The S4 was introduced in 2003. There have been no product revisions up to December 2004. Page 1... -
Page 5: Servicing Equipment
Commercial in confidence 1.4. Servicing equipment Detailed SART servicing requires specialist equipment, including a microwave pulse generator and a spectrum analyser. To reduce equipment costs a dedicated SART tester (ARG 5420) is now available. Traditionally this equipment is beyond the reach of many service agents and a lower level of routine SART servicing has become normal. -
Page 6: Safety Notices
Commercial in confidence 1.5. Safety notices Please read the following for your safety: This product has been assessed as presenting negligible hazard in a sealed serviceable state. Safety analysis The following table summarises the nature of the hazard which may be present when the unit is opened or serviced;... - Page 7 Commercial in confidence General precautions for chemical agents (adhesives, greases, IPA) Observe all safety precautions relevant to the country of operation. As a general rule, protective overalls, gloves and goggles should be worn when handling these chemical agents, but different countries may have additional requirements which must be observed.
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Page 8: Assessment
Service agents (Shore Based Maintenance (SBM) providers) are reminded that it is their responsibility to ensure that good common practice and the procedures herein are followed and that only McMurdo approved parts are fitted. Routine service agents can provide: Assessment •... - Page 9 Commercial in confidence Receipt ASSESSMENT Battery change Fault found Inspect Self test Disassemble Disassemble Change No fault Repair battery Reassemble Reassemble Leak test Leak test Functional test Return Assessment form The assessment form overleaf serves as a prompt to ensure no assessment steps are left out. It may be used to support customer billing, and must accompany any warranty return to the manufacturer.
- Page 10 Commercial in confidence Ref No. S4 SART ASSESSMENT Serial No. Customer/Comments Date. Inspection Remarks Casing intact Pole intact Pole extends correctly Lanyard OK Frangible tab intact Battery expiry date OK Date: Self test Un-triggered (sleep) state...
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Page 11: Maintenance Procedures
Commercial in confidence 3. MAINTENANCE PROCEDURES 3.1. Mechanical inspection Casing Ensure there are no visible cracks or mechanical damage. A cracked casing will lead to water ingress and is a serious fault. Pole Confirm the pole is intact and in good condition. The pole... -
Page 12: Functional Testing
Commercial in confidence Confirm SART indicates sleep mode as per table below Sleep Standby/Transmit LED flashes every 2 seconds LED is on continuously Beeper off Beeper sounds every 2 seconds Turn trigger signal on, or uncover radome, check transmit is indicated (see above) Turn trigger signal off or cover radome. - Page 13 Commercial in confidence ARG 5420 SART tester The Sartech/ARG 5420 portable SART tester is a hand-held instrument which triggers a SART and measures the resulting response. The frequency spectrum, frequency limits, pulse length and number of sweeps are measured and displayed. Test results may be stored for later recall or they may be printed.
- Page 14 Commercial in confidence SART tester features The SART tester displays the results of the tests in three ways: 1. During and after the test, it displays the response as a graph of amplitude against frequency – the ‘spectrum analyser’ display. The position of the tester should be adjusted to produce the optimum response –...
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Page 15: Leak Testing
Commercial in confidence 3.5. Leak testing Two alternative methods of leak testing are given. The gross leak test is preferred, as it causes a greater pressure differential across the seals of the SART, and so is more likely to detect a leak. -
Page 16: Battery Replacement
Battery replacement It is essential for safety and the reliability of the equipment that only the correct type of battery is fitted. Use only McMurdo approved parts. All batteries carry a label showing the replacement battery part number. Battery voltage test Lithium batteries have a very constant discharge voltage over time, hence voltage is not any indication of the capacity remaining in the battery. - Page 17 Commercial in confidence Remove the lower section of the SART by rocking it gently from side to side until the three battery connectors disengage. Discard the complete battery section including the frangible tab. Take care to dispose of the battery in accordance with applicable regulations.
- Page 18 Commercial in confidence Reassemble the switch ring and fit the spring according to the drawings below, ensuring that the spring lies flat in the housing. Fit the frangible tab as shown. Fit the replacement battery section. Line up the switch ring groove with ‘O’, align the frangible tab with this groove and ensure that the battery connectors are aligned.
- Page 19 Commercial in confidence Disposal of batteries Hazardous chemicals Wear gloves Lithium battery packs should be discharged slowly, then disposed of through an approved environmental disposal agent, or in accordance with local regulations. The rate of discharge must not exceed 100 mA. Resistors of 68 ohms (for the 6 V nominal output) and 150 ohms (2 W rating) are satisfactory for the SART battery.
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Page 20: Fault Finding
Commercial in confidence 4. FAULT FINDING Due to the nature of the SART fault finding is limited. The steps shown below should be sufficient to trace the fault to a major sub-assembly, which can then be replaced. -
Page 21: Repair Procedures
Commercial in confidence 5. REPAIR PROCEDURES SART repair is by replacement of major sub-assemblies only. No component level diagnostics are provided. The following repairs are possible if required: Replace O-ring • Replace PCB • Re-tune PCB •... -
Page 22: Re-Tune Pcb
Although it is possible to perform alignment of the PCB in the field, this is not a recommended procedure because it requires specialised test equipment and suitably qualified technicians. It is strongly recommended that PCBs are returned to McMurdo for calibration. 5.4. -
Page 23: Spares
Part No Contents Battery kit 86-630A Battery sealed in lower case, ‘O’ ring, screws Replacement parts/Options Pole assembly 86-440 S4-RT9 mounting conversion 86-484A Bulkhead bracket, mounting plate, screws Bulkhead bracket 86-415 Pole Assembly Kit 86-631A Pole, pole bracket, screw User manuals... -
Page 24: Appendix 1: Specification
Commercial in confidence APPENDIX 1: SPECIFICATION Frequency: 9.2 – 9.5 GHz Polarisation: Horizontal Sweep rate: 40 MHz / µs nominal Response signal: 12 sweeps Form of sweep: Forward: 7.5 +1 µs Reverse: 0.4 +0.1 µs Pulse emission: 100µs nominal... -
Page 25: Product Warranty
McMurdo's sole discretion to refund to the buyer the price of the product (or a proportional part of the price). McMurdo shall not be liable to a buyer who is not a consumer for any other loss or damage (whether indirect, special or consequential loss of profit or otherwise) costs, expenses or other claims for compensation which arise out of or in connection with this product. -
Page 26: End Of Life Statement
(BFRs), both in the housing material and circuit boards. In keeping with the directive, McMurdo strongly recommends that this SART product and its battery pack be disposed of in a sensible and considerate manner. For example, do not simply discard the product in the domestic waste. - Page 27 McMurdo A Division of Signature Industries Ltd Silver Point, Airport Service Road, Portsmouth PO3 5PB, United Kingdom Telephone: Int + 44 (0)23 9262 3900 Fax: Int + 44 (0)23 9262 3824 WebSite: www.mcmurdo.co.uk Email: customerservice@mcmurdo.co.uk 86-924 Iss.2...
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