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, � � ' <br /> E_16 v � � ��`' `" l s� � C��� ?` � �V <br /> � <br /> � Figure E-17: Pump Tonk P�99Ybock plug in Never enter a dosing tailk. A►�y <br /> Specifications Weatherproof clqsure work to replac� pumps, switcl�es <br /> or in house bosernent <br /> or connections should be <br /> power supply <br /> . a�arm wire performed from the outside, �ind <br /> , � union or other quick- the pump, pump co�ltrols, an�� <br /> control wire disconnect fitting pump discharg� line m�ist b�� <br /> removabl� from tlle 5urface.' l�h�, <br /> fina� grode se�vage g�ises pruduc��i 111 t�l�� tank <br /> can kill a p�rson in a ►i�att�r ��f <br /> -,::,:.:.:,::-,:.:,:�:�..,.-,:;�.<,....:..:.:•:,:_._,:�� .,:;�._,: minutes. When workin�; on a tank, <br /> -. ; . <br /> �' �� '; , make sure the area is w�ll- <br /> alarm floot on separate :; � ventilated and someone i� sta►Zdin � <br /> electricol circuit � <br /> a t '; by. Never go into a dosing tank to <br /> a0.o� g�c�� �� TE'tlleVe SO1Tlt'OIlE' WIlO I1�1S <br /> � ;' accidentally fallen in without a <br /> � � y self-contained breathin a aratus. <br /> — start�ev�_ � ;. � PP <br /> „ �� While waiting for help, the best <br /> ��9�� �'S� ✓ �3�� ;: block to elevate thing to do is to put a fan at the to <br /> shut-off level t, pump from � <br /> � i �� tonk bottom of the tank to blow ii1 fre5h air. (See <br /> �a�� pump control fl t—� ;: Section C: Sewage Tcanks for a <br /> �S-3 � ���0 : discussion of safety precautions <br /> � � .Y .� � <br /> and practices for workinb w�ith <br /> *70b0.0160, 1aE sewage tank5.) <br /> watertight and lockable electrical box reawood, cedar or <br /> treated posr (4 x 4 rr��n) <br /> 2-inch PVC conduit schedule 80 all plugs and electrical <br /> connections inside box <br /> loop of power cord <br /> cleaning occess cover <br /> chained and locked �� final grade <br /> sealed cleaning union wire from power supply at least <br /> access rings 12"be�ow grode <br /> _ :` :.r <br /> � „_ pipe loid on uniform slope for drainback <br /> seoled tank cover �' �It pipe must be lower than <br /> plastic rope or >� union to get elevation for droinbock, <br /> chain with anchor >' a 1/4-inch weep hole must be used. <br /> alarm float on separate � Notes: <br /> electrical circuit �� <br /> � ; Electrical wire from power supply must not <br /> start lev�_ 3° �. run over any tanks but must be lolcl tes�aa <br /> no greater than 25� � i' them and must be piaced in conciuit <br /> average design f�ow ��� olong post. <br /> .�: <br /> t shut-off level ' ;� <br /> �2��_ �g�� ( 'J: Electrical cords from pump ond ffoats <br /> pump control float �pp� ::: must be run througn conduit.Wires cc�nnot <br /> ,�•� •:1•• •-.�,:. � have ground contact. <br /> • Figure E-18: Pump Tank Specifications . <br />