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: s.�5::, T�w., � � '�l, -',- µ'�'` y�•�'' �'--��„ —sL ,xti�,, .�7� s� - - .�,ti�� - � �.y � .:a�`�-�^ .;.155. rte:,,,� <br />""� _ _'S-• .d. 1��. 5- ..ems rs+ :?e7r tr ' ,�K,a,� - W^�:si+ +' erF✓we- 59!"9.aF 6„ ,,..yfi�'" ' <br /> , T'• . Y x-S�.µ .,�r'E 'r f_. � �� W.R.. �Fd:- � ,�,-k w„ y4 ��hy ir�'d�,A=��i 1„- ¢�?��� -.-x✓ .. q.� - <br /> - ��s`" •..mr=- .x,* r 'r 'h6+:xt i c.�.'� "�ww.'"` �n ;x a ���` .+ <br /> ES ENGINE ERING•SCIENCE <br /> LaCea. �a order - - <br /> e?lace _:e E'_Iter car`_dge, simply „old tre <br /> -:e ease wtt; a 911s' •+rencn and unscrew .e <br /> �e' ;vaaeiak .Cnnect_a;. -t <br /> __, a Samole _niat .Z Cie spa ec ;e <br /> :zus_na, +tth anot.er :/16- lrencn. �.lscard the old filter ana replace <br /> ftt.'1 :=.e new one. Screw = e sample L:let cannect_cn f`_==ly :am LS <br /> place. 'fever use the Lnstr•L-=ent WLthoUr the ciiter as the detector ran <br /> be damaged. <br /> Detector Maintenance <br /> Further maintenance operations. which can he performed by the user. <br /> involve the cleaning of the ion chamber and the U7 lamp window or re- <br /> placement of the Lamp L=elf. <br /> == tae Lastrament as peen usea _nr extenaed periods .:1 dusty <br /> envtronrenu 'or L! there Ls a sLgnrF_csnt loss of senalm!VLty, ana isnot <br /> 'tae r a .tn obstructed :_iter. and the Uv lamp and Lan czr,mmer ,<tll r_ <br /> quLr_ examination: <br /> For further inst:_ct_ons, consult the users manual. <br /> srosmmsoen ccmngsTI3:.e G;,s I'mzc;LTcn <br /> The combuseible gas indicator must 5e calibrated each week. The <br /> procedure for caiibrat_nq the combustible gas indicator is Listed below_ <br /> La •- <br /> 1. attach the 0.5 liter per mtnutc fixed flow rate reulator to the <br /> calibration gas cylinder. <br /> 12. Attach a sample Lane from the regulator to the balloon inlet. <br /> .,. Att-let another sample Line from the ballon outlet to the sample <br /> draw intake an the instrument_ <br /> 3. Fill fast ballnon wLt_h calibration gas ane' al?.ov the sample draw <br /> psamot to draw sit over the sensors. oo uaT oyERINFLAT_- QAj="j <br /> t �.. Feed nateas <br /> g =oto the ballon as`needed to keep it partially <br /> Lnf fated. <br /> ;• 'dal= =-;r tie readings to stabil_=e. :'hen. usinq a small <br /> }eweier'� screwur_rer, adjust the 'gas span' _ot to apt .M1 a <br /> steady _cacti:q �nxc: corresponds :o <br /> :':e caiibrat_cn gas <br />