Operating The Purge System; Standard Purge Start-Up (With Or Without External Pressure Switch) - Ametek WDG-V HP Series Manual

Operating the Purge System

This section describes how to prepare the Standard Purge and Rapid Purge
systems used with WDG-V HP Series and the WDG-V/S Series Analyzers.
Standard Purge Start-Up
(with or without External Pressure Switch)
PURGE AIR STARTUP PROCEDURE:
SHUT DOWN PROCEDURE:
72 | Thermox ® WDG-V HP Series and WDG-V/S Series Analyzers
For North American Class I Division 2 and ATEX/IECEx Zone 2 applica-
tions, AMETEK provides two purge options (Standard Purge and Rapid
Purge) that can be used with the WDG-V HP Series and WDG-V/S
Series Analyzers.
WARNING
POWER SHALL NOT BE RESTORED AFTER THE ENCLOSURE HAS BEEN
OPENED UNTIL THE ENCLOSURE HAS BEEN PURGED FOR 90 MINUTES AT A
PRESSURE OF 0.15" WATER MINIMUM AND 0.38" WATER MAXIMUM .
WARNING-HOT INTERNAL PARTS ARE ABOVE THE IGNITION TEMPERATURE
OF COMBUSTIBLE GASES. POWER MUST BE REMOVED FROM BOTH THE
SENSOR AND CONTROL UNIT FOR 90 MINUTES WHILE MAINTAINING EN-
CLOSURE PRESSURIZATION BEFORE DOOR IS OPENED, UNLESS THE AREA IS
DEMONSTRATED TO BE NON-HAZARDOUS.
CAUTION
THE OUTSIDE SURFACES OF THIS CABINET AND ALL INSIDE
SURFACES MAY BE HOT ENOUGH TO CAUSE BURNS; USE
PROPER PROTECTIVE EQUIPMENT WHEN SERVICING.
AVERTISSEMENT
LA SURFACE EXTÉRIEURE DE CETTE ENCEINTE ET
TOUTES LES SURFACES INTÉRIEURES PEUVENT ÊTRE
SUFFISAMMENT CHAUDES POUR CAUSER DES BRÛLURES.
UTILIZEZ UN ÉQUIPMENT DE PROTECTION ADAPTÉ LORS DE
LA MAINTENANCE..
PN 10686-17-5, Rev A