BPS YZ102 IOM-R1.0 Page 7 of 14
© 2018 - Best Purging Systems Corporation
Unit Tubing Instructions
1. Carefully read “Protected Enclosure Criteria” on page 3
and “Enclosure Connection Requirements” on page 4
before proceeding.
2. The following instructions are for Units mounted external
to the Protected Enclosure. Consult factory for units
which are mounted inside or through the face of the
Protected Enclosure.
3. Connect 1” Protective Gas Supply Header to Unit Supply
Connection using 1/4” .035 welded or seamless wall
stainless steel, fully reamed tubing. Protective Gas
Supply tubing should not exceed 15 feet length and 5
bends.
4. Connect Unit Enclosure Supply Connection to the
Enclosure Supply bulkhead fitting using 1/4” .035 welded
or seamless wall stainless steel, fully reamed tubing.
Enclosure Supply tubing should not exceed 5 feet in
length and 5 bends.
5.
MULTIPLE ENCLOSURE CONNECTIONS ONLY.
Connect Multiple Enclosure Protective Gas Supply Piping
(3/4” rigid pipe, fully reamed) from Protected Enclosure
#1 to Protected Enclosure #2. Repeat procedure for
connection between Protected Enclosure #2 and #3.
Protective Gas Supply piping should not exceed 10 feet
length and 5 bends between each enclosure.
6. Connect Unit Enclosure Reference Connection to the
Enclosure Reference bulkhead fitting using 1/4” .035
welded or seamless wall stainless steel, fully reamed
tubing. Enclosure Reference tubing should not exceed
20 feet length and 5 bends.
Unit Mounting Instructions
1. Carefully read “Protected Enclosure Criteria” on page 3
and “Enclosure Connection Requirements” on page 4
before proceeding.
2.
Determine the Mounting configuration for the purge unit.
See “Typical Mounting Configurations.”
3.
Firmly secure the unit mounting flange, if utilized, to the
unit face plate using the hardware provided.
4. Drill and ream four mounting holes in the protected
enclosure. (see page 6 for unit mounting flange
dimensions and unit layout)
5. Based on “Enclosure Connection Requirements” on page
4, drill and ream a 29/64” hole in protected enclosure,
install 1/4” Enclosure Supply Bulkhead fitting. NOTE:
Protected Enclosure Supply should be installed at
extreme opposite corner from part # PV-2 Purge Vent
and 8” from the Enclosure Reference Connection.
6. Next, drill and ream a 29/64” hole in protected enclosure,
install 1/4” Enclosure Reference Bulkhead fitting. NOTE:
Protected Enclosure Reference should be installed at
least 8” from the Enclosure Supply Connection.
7. Install PV-2 Purge Vent at extreme opposite corner from
the Enclosure Supply Connection.
(WARNING: The PV-2
Purge Vent is gravity operated and MUST be mounted
in a true vertical position.)
8. Install the PV-2 Purge Vent Mounting Hub through a
1-1/4” hole on the Protected Enclosure.
9. Secure the Purge Vent from inside the Protected
Enclosure using the Purge Vent Mounting Nut.
10. Secure Purge Unit Mounting Flange to protected
enclosure using hardware provided.
Mounting Set Up
Enclosure Warning Label (EWL)
MUST
be permanently affixed on or near all protected enclosure doors, entries and openings.
Enclosure Warning Label(s)
Frame/Panel Mount
Bottom Mount
Top Mount
Left Mount
Right Mount
Typical Mounting Configurations
WARNING NOTICE
THIS ENCLOSURE CONTAINS HOT COMPONENTS
ENCLOSURE SHALL NOT BE OPENED UNLESS AREA IS KNOWN TO BE FREE
OF
FLAMMABLE MATERIALS
OR
UNLESS
A
LL
DEVICES HAVE BEEN
DE-ENERGIZED FOR THE TIME SPECIFIED BELOW
.
MINIMUM COOLONG TIME:
WARNING - PRESSURIZED ENCLOSURE
ENCLOSURE SHALL NOT BE OPENED UNLESS AREA IS KNOWN TO BE FREE
OF
FLAMMABLE MATERIALS
OR
UNLESS
A
LL
DEVICES HAVE BEEN
DE-ENERGIZED. P OWER
SHALL
NOT BE RESTORED A FTER
ENCLOSURE
HAS BEEN O PENED
UNTIL
C
OMBUSTIBLE
DUSTS HAVE BEEN REMOVED
AND ENCLOSURE HAS BEEN PURGED AND PRESSURIZED IN ACCORDANCE
WITH THE UNIT START UP INSTRUCTIONS.
AREA CLASSIFICATION
PRESSURIZATION TYPE
TEMPERATURE CODE
BEST PURGING SYSTEMS CORPORATION WWW.PURGEIT.COM
LA MARQUE, TEXAS USA
BEST PURGING SYSTEMS CORPORATION WWW.PURGEIT.COM
LA MARQUE, TEXAS USA
