Operating Sequence - Pepperl+Fuchs 1001A Series Installation And Operation Manual

Model 1001A Installation and Operation Manual
WARNING! Do not exceed a "safe" pressure with the
enclosure pressure control regulator. Operators must
follow step-by-step sequence of the start-up instructions
nameplate on the protection system.
Class I Purging Operation
With the inert gas supply connected, enclosure power
deenergized, and alarm system energized (if utilized):
1. Carefully read start-up instruction nameplate on system.
2. Check operation of the enclosure protection vent (EPV-1,
if utilized), opening it manually several times. See page 17,
"Helpful Hint."
3. Seal protected enclosure(s).
4. Open enclosure pressure control regulator, by turning CW,
to set enclosure pressure indicator at "safe" pressure, the
pressure loss alarm switch should then activate to silence
the alarm system (if utilized).
5. Ensure the protection system enclosure pressure indicator
maintains a "safe" pressure for one (1) minute.
6. Standby for the exchange time as specifi ed on the
instruction nameplate, then energize the protected
enclosure power.
7. Ensure the enclosure pressure indicator maintains a "safe"
pressure before leaving system unattended.
Model
identifi cation
nameplate
Enclosure
pressure
control
regulator
Model 1001A-WPS & WPSA
18

Operating Sequence

Enclosure
pressure
gauge
front view
Class II Pressurization Operation
With the inert gas supply connected, enclosure power
deenergized, and alarm system energized (if utilized):
1. Carefully read start-up instruction nameplate on system.
2. Check operation of the enclosure protection vent (EPV-1,
if utilized), opening it manually several times. See page 17,
"Helpful Hint."
3. Remove all traces of combustible dust.
4. Seal protected enclosure(s).
5. Open enclosure pressure control regulator by turning CW
to set enclosure pressure Indicator at "safe" pressure, the
pressure loss alarm switch should then activate to silence
the alarm system (if utilized).
6. Ensure the protection system enclosure pressure indicator
maintains a "safe" pressure for one (1) minute.
7. Energize the protected enclosure power.
8. Ensure the enclosure pressure indicator maintains a "safe"
pressure before leaving system unattended.
Model
identifi cation
nameplate
Enclosure
pressure
control
regulator
Start - up
instruction
nameplate
Model 1001A-LPS
EXP pressure
loss alarm
awitch
Enclosure
pressure
gauge
front view