Delta NANOTRACE DF-745 Instruction Manual Page 98

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94 Appendix B Hydrogen Service Safety System
THIS ENCLOSURE IS PROTECTED BY PURGING
BE NON-HAZARDOUS OR UNLESS ALL DEVICES WITHIN HAVE BEEN
DEENERGIZED. AFTER ENCLOSURE HAS BEEN OPENED POWER SHALL
NOT BE RESTORED UNTIL THE ENCLOSURE HAS BEEN PURGED FOR
ENCLOSURE SHALL NOT BE OPENED UNLESS THE AREA IS KNOWN TO
15 MINUTES AT 30 SCFH.
ENCLOSURE IS PROTECTED
sampling combustible gas mixtures,
enclosure must be purged with an
inert gas (nitrogen perferred). Purge
applying electrical power. Set purge
BY A PURGE SYSTEM
For explosion protection while
purge flow drops below 26 scfh.
will be cut by the safety interlock if
enclosure for
flow rate to
before
Pump power
PURGE VENT
1/4" COMPRESSION
PUMP OUTLET
1/4" COMPRESSION
PUMP INLET
1/4" COMPRESSION
AC STRAIN RELIEF
FOR PUMP POWER
Ø.44[Ø11.18]
4 PL
PUMP INLET
& OUTLET
1/4" COMPRESSION
PURGE VENT
1/4" COMPRESSION
6.12 [155.37]
6.92 [175.76]
5.31 [134.99]
3.48 [88.51]
(2.68 [68.12])
4.85 [123.29]
12.00 [304.80]
3.75 [95.25]
5.50 [139.80]
11.60 [294.75]
4.72 [119.81]
1.25 [31.75]
14.00 [355.60]
1.00 [25.40]
.63 [15.88]
12.00 [304.80]
14.50 [368.30]
13.25 [336.42]
1.25 [31.75]
2 PL
16.68 [423.72]
7.00 [177.80]
7.55 [191.77]
Figure 86: Pump Purge Option
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