INSTALLATION, OPERATION & MAINTENANCE

Transcription

1 DIESEL PROTECTION SYSTEMS Exhust Temperture Vlves (Mehnil) INSTALLATION, OPERATION & MAINTENANCE Vlve Numer TSZ-135 TSZ-150 TSZ-200 TSZ-275 TSZ-392

2 DESCRIPTION Non-eletril temperture vlves mnuftured in orrosion resistnt mterils nd designed to monitor the exhust gs temperture of diesel engines fitted with exhust ooling systems. These vlves re suitle for zone 1 hzrdous re pplitions nd re intended for inorportion into diesel engine oil pressure (or ir pressure) operted shut down ontrol systems. Opertion is y the vlve tripping to vent ontrol system pressure one the preset temperture is exeeded. Detils nd overll dimensions re given elow. Vlue Type d Nominl Trip Setting Dimensions (mm) LTD Thred d e TSZ C /2spt 1 /4sp TSZ C 189 TSZ /2spt 1 /4sp TSZ-200 e TSZ C Sensor element 275 F f /2spt INLET g 1 /2npt 1 /4sp 1 /4nps TSZ F /2npt 1 /4nps LTD Sensor proe TSZ-135 d e Two ples vent nd inlet ports Spnner position for use during fitting do not use spnner/wrenh on rss ody APPLICATION Used in onjuntion with flow restritor M5 Countersunk nd fuel srew shut down vlve* or n intke ir shut down vlve*, this produt provides simple high exhust temperture engine utomti shut down system. Alterntively it n e omined with numer of other M5 Chlwyn Gru srew omponents to engineer more omplex shut down system lso inluding for exmple high oolnt temperture, engine over-speed nd low engine oil pressure. Notes: A. The fuel shut down vlve* nd/or Srew driver ir intke to djust shut down vlve* to e set t trip pressure within the rnge 10 psi (0.7 r) to 30 psi (2 r). B. The mximum oil or ir pressure pplied to the ports of the vlve not to exeed 120psi (8.25 Srew r). driver to djust 2

3 INSTALLATION Fit the vlve into the engine exhust system immeditely downstrem of the exhust ooling system. Ensure tht the vlve s sensor proe is fully exposed to the exhust gs strem. IMPORTANT NOTE: When tightening the vlve into position, or removing the vlve, pply spnner lods only to the stinless steel hexgon setion nd NOT the rss ody. Use suitly rted tue of etween 6 nd 8 mm. ore to onnet the vlve into the oil [or ir] pressure operted engine shut down ontrol system. A suitle flow restritor must e fitted into the pressure feed line to the vlve. For typil oil pressure operted system Chlwyn flow restritor ORZ-060 (or ORZ-061) is reommended. To inrese system sensitivity restritors ORZ-040 or ORZ-041 re ville. For omplex ir operted systems vrile restritor llowing degree of system tuning my e neessry. For engine oil pressure operted systems the vent port of the vlve must e onneted to position on the engine to llow ny vented oil to freely drin k into the engine. A onnetion into the roker over would SENSOR e ELEMENT n exmple d of one suitle rrngement. For ir systems the vent my e relesed s pproprite to tmospheri pressure. It is VERY IMPORTANT tht the vrious omponents LTD in the shut down ontrol system re orretly sequened. The pressure supply must initilly e fed through the flow restritor. The pressure line must then e tken to eh vlve in turn. The reommended method of onnetion is vi T fitting mounted diretly onto the vlve. The pressure feed is then finlly TSZ-100 piped to the engine shut down vlve[s]. All pipe-work in the ontrol system should generlly e kept s short nd diret s possile ut must omply with the sequene outlined ove. A typil iruit eexmple is shown elow. INLET f The vlve is ftory set to trip within + 1 C of the nominl trip temperture. It should e noted however tht vritions in instlltion detil, inluding the trip pressure of the ssoited shut down vlve, my give rise to smll vrition in the tul shut down temperture. One instlled, nd prior to putting the system into servie, hek should e rried out s given under MAINTENANCE - Monthly. Where high degree of ury in the shut down temperture is required, the hek listed under MAINTENANCE - Yerly should lso e ompleted. If there is n uneptle dely in shut down, the sensitivity n e djusted y fitting smller flow restritor into the system. Additionlly it is possile to mke smll djustments to the Chlwyn temperture vlve (see Pge 4). EXAMPLE OF TYPICAL INSTALLATION FSX-100 FUEL SHUT DOWN VALVE START OVERRIDE / EMERGENCY STOP LEVER 'TMZ' TYPE AIR INTAKE SHUT DOWN VALVE ENGINE OIL PRESSURE FLOW RESTRICTOR ORZ-060 HIGH COOLANT TEMPERATURE VALVE HIGH EXHAUST TEMPERATURE VALVE 3

4 e Sensor element f INLET g S EXHAUST TEMPERATURE VALVES (MECHANICAL) OPERATION If instlled into ontrol iruit tht inludes utomti shut down on low engine oil pressure, speil engine strt proedure is neessry. For further detils see the Chlwyn tehnil pulition supplied with the relevnt Chlwyn intke ir or fuel shut down vlve. LTD ADJUSTMENT Before ttempting ny djustment, strt engine nd rek the vent line from the instlled vlve. At n TSZ-135 exhust gs temperture of degree of so elow the required shut down temperture, smll mount of oil Sensor proe should strt to drip from the vent. This should inrese to stedy flow t the required trip temperture. This indites tht the vlve is either djusted orretly dor t most requires only miniml e Two djustment. ples vent In this nd se inlet ports efore djustment hek the iruit is orretly piped up, suitle sized restritor is instlled nd the ontrolled engine shut down vlve is set to trip pressure of 0.7 Spnner r (10psi) position or greter. for use If during this fils fitting to resolve do not the prolem djust the vlve s follows. use spnner/wrenh on rss ody Remove M5 ountersunk srew nd M5 gru srew s shown elow. Use srewdriver to djust setting. Wind in to inrese setting. Wind out to redue. IMPORTANT NOTE. Do not djust dimension X outside of rnge X = 12mm to X = 20mm. M5 Countersunk srew After djustment fit nd tighten the M5 gru srew to lok the djuster srew in position. Refit nd tighten M5 Gru srew the M5 ountersunk srew. Srew driver to djust Top fe of vlve Top fe of djusting srew Dimension X When fitting pply spnner loding onto this stinless steel hexgon setion nd NOT to the rss ody. 4

5 MAINTENANCE Monthly: Chek for nd retify ny lekge. With the engine running t low to medium speed, rk open the ontrol system pipework t the TSZ vlve suffiiently to vent the ontrol iruit pressure. Ensure this results in rpid utomti shut down of the engine. Where pplile tke the neessry preutions to void spillge of hot engine oil. Yerly: Remove temperture vlve from engine exhust ut leve fully piped into the engine shut down system. Arrnge to het vlve y instlling into dry lok temperture lirtor or use other suitle mens to het the proe. Run engine t low to medium speed whilst grdully inresing the temperture of the vlve proe. Chek tht engine shut down ours t required temperture. IMPORTANT NOTE: Extreme re is required when working on n operting engine. These heks must only e rried out under the supervision of properly qulified nd experiened stff nd ll neessry sfety preutions tken 5

6 6

7 LIMITED Chlwyn Industril Estte, Prkstone, Poole, Dorset BH12 4PF ENGLAND Tel: +44(0) Fx: +44(0) CE214-2 LIMITED RESERVE THE RIGHT TO UPDATE THIS PRODUCT SPECIFICATION WITHOUT PRIOR NOTICE.