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w <br /> ENGINEERING-SCIENCE <br /> ecuibrauon. �.en set =-Mi 1s_c lsz: isplay by ad�usttng <br /> ".zck t=e "?? rnoo 'Ln puce then detacz the <br /> nlast:.r tLaddcr. <br /> `1• ,ecnecx zer2. <br /> 5. Record results OE t`.se calibraz,-on _n LogCOOK. <br /> Ya general. the ambient operars.aq range of temperatures fur t-hu <br /> ?hotosac-TI? i:; 0-434C t32-S10•F1. The manufactirer dot's not recommend <br /> use of the ritotovac outside this range although successful use has been <br /> -eoorted. Whess the Phatovac :s taken From a low temperature Leto a <br /> region of :signer temperature and humsdit{, a fig of condensaszoa us.L1 <br /> !arm on the UV Lamp. its wLLI result :.z a temporary Lass of respanse <br /> r which is best remedied by allowing t.'se inszrs:ment to recover whila <br /> ranning the pump. To avoid osis, the ma.nufzcturer suggeacs Chat the <br /> user allow the Lnstruaenc to equilibrate to ambient temperature before <br /> turning it on. Recommended maintenance for r:.he photovac-TTP is Listed <br /> belows <br /> Routine maintenance for "CTP' is absalutrsly laminal: all that is <br /> required i9 to ensure the battmries remain close to full charge (during <br /> parsods of non-usel and that the inlet filter is kept clear of dust <br /> < oart'clea. The filter used is of =e t5 scxtniess steel cartridge <br /> j housed in a stainless steel cylinder permanently attsched to the front <br /> Of the instrument. <br /> ty <br /> occasionally. loan of TTP* seesiti7itf y require servicing of the <br /> r=a <br /> detector and this is almost always 11mited to 3=PLy cLeaninq or c.'sanq-• <br /> Ing tate Lamp/ion cell assembly. <br /> -. Periodically, it will be necessary to instill now, rechargeable <br /> batteries. which can be expected to last for one year as heavy use. <br /> r The plastic parts of TIFw can be cleaned with a damp cloth and mild <br /> datergenz. L! necessary. 00 NOT use any orgamLa solvents as t;he Unish <br /> may be damaged. <br /> ?�LtCr •;i,acemenr <br /> e falter and if <br /> TIP"s response can. be tested with and wit':ouc .h <br /> M t:e resoanse verses by more t'sass 1 0 percent. .he z_leer ynauld 5e re- <br />