Z-Purge Shut-Down Procedure - Ametek WDG-V HP Series Manual

Z-Purge Shut-Down Procedure

Always use tubing that is free of oil and dirt. Stainless steel tubing is recom-
mended.
PROTECTIVE GAS SUPPPLY
WITH AN ALARM
PROJECTIVE
GAS
SUPPLY
Figure 17.
Z-purge setup.
PN 10686-17-5, Rev A
Hot internal parts are above the ignition temperature of combustible
gases. Power must be disconnected from the analyzer for 90 minutes
while maintaining purge air flow before the door is opened, unless
the area is demonstrated to be nonhazardous. The Z-purge apparatus
provided meets NFPA 496.
Power must not be restored after the enclosure has been opened until
the enclosure has been purged for 65 minutes at a pressure of 0.4" of
water.
SUPPLIED BY SUPPLIED BY
CUSTOMER
ALARM
ALARM
ACTUATOR
MARKED
REGULATOR
ADJACENT TO
ENCLOSURE
AMETEK
MARKED SERVICE VALVE
ADJACENT TO
ENCLOSURE
PRESSURIZED
ENCLOSURE
WITH INDICATOR
WGD-V/HP
GAUGE
|
EH&S 49