Powerex Medical FirstCall MFLD-LIQ-NFPA-GG-PSI Installation and operation manual

FirstCall™ Liquid x Liquid
Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 1 of 24
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product
described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal
injury and/or property damage! Retain instructions for future reference.

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 3 of 24
Table of Contents
Responsibilities 4
Introduction 4
Safety Guidelines 4
General Instructions/Location & Shelter 4
Product Line Overview 5
Conguration of Models 5
Liquid x Liquid 5
Installation 5
Source Valve 5
Manifold Cabinet Wall-mounting 6
Header Installation 6
Emergency Reserve Header Installation 7
Vent Line Plumbing 7
Final Line Sensor & Gauge 7
Electrical 8
NEMA 4 (optional) 8
Pigtail & Cylinder Installation 8
Power On 9
Settings 9
Login to Settings 9
Alarm History 10
Alarm Status 10
Alarm Summary 10
Gas Settings 11
BACNet Settings 11
Change Password 11
Screen Setting Time & Date 11
Maintenance Mode 11
Startup & Verication of Changeover 12
Final Line Pressure Adjustment 13
Cylinder Replacement & Handling 13
Maintenance Schedules 13
Maintenance Mode 13
Regulator Settings 13
Line Regulator Switching 13
Wiring Diagram 15
Flow Diagram 16
Parts 17
Specications 18
Dimensions 18
Weight 18
Flow Ratings 18
Pressure Settings 18
Operating Temperature Range 18
AC Input 18
DC Output 18
Input Fuse 18
Power Consumption 18
Manifold Regulator Repair Kit 18
Appendix A. BACnet Object Names 19
Warranty 20

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 4 of 24
Responsibilities
Information contained in this manual pertains to
the Powerex FirstCall™ medical gas manifold system.
The manifold system will operate as described in this
manual when operated and serviced in compliance
with the instructions.
Installer Responsibilities
The manifold should be handled, installed, and tested
per the recommended practice as described within this
manual. Should any repair or replacement become
necessary, contact Powerex for original equipment or
replacement parts.
User Responsibilities
The manifold should be tested and examined
periodically according to facility codes. Any parts which
are found to be damaged, corroded, contaminated, etc.
should be replaced.
Introduction
Safety Guidelines
Installation of the Powerex FirstCall™ Manifold
involves installing the manifold cabinet, headers, and
making the necessary conduit, plumbing and electrical
connections. All installation and testing should be done
in accordance with NFPA 99.
Electrical power intended for the
manifold to be installed should be
disconnected prior to installation.
This device should only be installed
by qualied personnel. Installation
should not be attempted by anyone not having general
experience with the installation of devices of this nature.
Failure to follow the following
instructions can result in personal
injury or property damage:
• Never permit oil, grease, or other combustible
materials to come in contact with cylinders,
manifold, and connections. Oil and grease may
react with explosive force when ignited while in
contact with some gases – particularly oxygen and
nitrous oxide.
• Cylinder and master valves should always be
opened very slowly. Heat of recompression may
ignite combustible materials creating an explosive
force.
• Pigtails should never be kinked, twisted, or bent
into a radius smaller than 3 inches. Mistreatment
may cause the pigtail to burst.
• Do not apply heat. Oil and grease may react with
explosive force when ignited while in contact with
some gases – particularly oxygen and nitrous
oxide.
• Cylinders should always be secured with racks,
chains, or straps. Unrestrained cylinders may fall
over and damage or break o the cylinder valve
which may propel the cylinder from its current
position.
• Oxygen manifolds and cylinders should be
grounded. Static discharges and lightning may
ignite materials in an oxygen atmosphere, creating
a re or explosive force.
• Welding should not be performed near nitrous
oxide piping. Excessive heat may cause the gas to
dissociate, creating an explosive force.
• Remove all protective caps prior to assembly.
The protective cap may ignite due to heat of
recompression in an oxygen system.
General Instructions/Location & Shelter
Manifolds should be installed in accordance with
guidelines stated by the NFPA, CGA, OSHA, and all
applicable local codes. Central supply systems and
cylinders should not be placed in a location where the
temperature will exceed 125°F (51.6°C) or fall below
-20°F (-29°C). A manifold placed in an open location
should be protected against weather conditions.
During winter, protect the manifold from ice and
snow. In summer, shade the manifold and cylinders
from continuous exposure to direct sunlight. The ow
capacity of nitrous oxide and carbon dioxide manifolds
depend upon ambient temperature and the number of
cylinders on line. Contact your gas supplier to determine
the vaporization rate of Carbon Dioxide and Nitrous
Oxide cylinders for the ambient temperature climate
at the installation site. Leave all protective covers in
place until their removal is required for installation.
This precaution will keep moisture and debris from the
piping interior.

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 5 of 24
Product Line Overview
The Powerex FirstCall™ fully-automatic medical gas
manifold delivers an uninterrupted supply of medical
gas to a facility from multiple liquid cryogenic portable
bulk vessels equally divided into two banks, plus an
emergency reserve cylinder bank for liquid manifolds.
The manifold is cleaned, tested, and prepared for
the intended medical gas service. It is constructed in
accordance with requirements of the latest edition of
NFPA 99 and CGA. Features and benets include:
• Designed and manufactured in the USA
• 5 year warranty on parts, 2 year warranty on labor
• Industry-leading ow capacity
• 7” high-resolution touchscreen HMI graphically
displays bank pressure, primary/secondary bank
status, nal line pressure, changeover set point,
alarm status, and emergency reserve bank status
• Ethernet connectivity using BACnet over IP
protocol to building management system –
standard
• Controlled via next generation PLC technology
• Final line pressure switch included
• Robust changeover design using dome-loaded
primary regulators controlled by dual solenoids
• Robust piston-style nal line regulator
• Built-in economizer circuit to capture NER gas
from the secondary bank
• Emergency reserve regulator, gauges, transducer,
pressure switch, and header inlet block, and pipe
nipple included as a pre-assembled unit
• Removable cabinet enclosure for improved
service access
• Single point vent connection
• Maintenance mode
• Push-button bank changeover
• ¾” source valve included
• NEMA 4 enclosure optional
• Heaters optional for Nitrous Oxide and Carbon
Dioxide
• Input power 110 VAC to 240 VAC, 50 to 60 Hz
PLC + HMI
Combination PLC+HMI monitors inputs from bank
and nal line transducers (cylinder), as well as pressure
readings from transducers and signals from bank,
emergency reserve, and nal line pressure switches.
The PLC controls bank changeover and generates alarm
signals based on input from the installed pressure
switches. Bank status and alarm status are both
displayed on high quality 7” LED HMI touchscreens.
Preprogramed standard settings are included with
all standard medical gasses. Alarm messages and
descriptions are fully customizable. Alarm and error
history is recorded in Alarm Summary. The unit is
capable of communicating with building monitoring
system via Ethernet connection using BACnet over IP.
Conguration of Models
Liquid x Liquid
MFLD-LIQ-NFPA-GAS(-N4)
GG = Gas Type
O2 = Oxygen (55psig)
N2O = Nitrous Oxide (55psig)
N2 = Nitrogen (180psig)
CO2 = Carbon Dioxide (55psig)
HYP = Hyperbaric Oxygen (100psig)
N4 = NEMA 4 option
Ex. MFLD-LIQ-NFPA-O2
MFLD-LIQ-NFPA-N2O-N4
Installation
Source Valve
The VP002700AV ½” M NPT x ¾” tube extension
Source Valve is included with every FirstCall™ manifold.
Install the source valve on the outlet of the manifold
(located at the top center) prior to mounting the
manifold cabinet.

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 6 of 24
Manifold Cabinet Wall-mounting
To have clearance beneath the manifold cylinders,
measure a distance of 60” from the oor and mark it
on the wall. Using a level, draw a horizontal line at the
mark. Place the mounting bracket on the wall, lining up
the horizontal line with the bottom of the bracket, and
mark the 4 mounting holes on the wall.
Use appropriate mounting hardware (not included)
to fasten the mounting bracket to the wall
Identify the slot on the back of the manifold near
the top, and the corresponding tab on the top of the
mounting bracket. Lift the manifold cabinet just over
top of the mounting bracket and lower it so that the
mounting bracket tab is inserted into the slot on the
back of the cabinet.
Using the 4 5/16” bolts provided, tighten the manifold
cabinet to the mounting bracket.
Header Installation
Powerex header assemblies, including Liquid x Liquid
bank headers and Emergency Reserve bank header
(liquid only) are sold separately.
Attach the headers to the union on each side of
the manifold control cabinet. Using a level, mark the
placement of mounting brackets while keeping the
header on a horizontal plane.
Remove the U-bolt assemblies from the header
mounting brackets. Position the brackets so that the top
of the bracket is aligned with the bottom of the headers
and is centered between the cylinder connections.
The end bracket should be placed as close to the last
cylinder as possible to provide the most support and
stability.
Mark the mounting hole and install fasteners suitable
for type of wall construction (fasteners not included) .
Fit the U-bolt over the header piping and tighten the
two mounting nuts.

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 7 of 24
Emergency Reserve Header Installation
The Emergency reserve regulator, gauges, transducer,
pressure switch, and header inlet block, and pipe nipple
are included as a pre-assembled unit, loose within the
packaging.
The inlet for the Emergency Reserve bank is located
right above the right liquid bank. Install the pipe nipple
onto the inlet check valve, and then install the pre-
assembled regulator w/ gauges and sensors. If the
length of the provided pipe nipple is insucient, install
a longer pipe to extend the assembly further away from
the manifold.
Installthe Emergency ReserveHeader(sold separately)
using the same method described for the left and right
bank header.
Vent Line Plumbing
The pressure relief valves are plumbed together
inside of the Manifold and are connected at a single
point on the top right of the manifold cabinet – the
connection is a ½” FNPT thread.
The vent line must be connected and plumbed by
the contractor in a manner compliant with the latest
version of NFPA 99.
Final Line Sensor & Gauge
Remove the plug in the Source valve and install the
nal line sensor and gauge assembly (included).
The pressure switch is adjustable; the default settings
is 20% of the nominal delivery pressure of the gas per
NFPA99.

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 8 of 24
Electrical
NOTE: Refer to page 15 for the wiring diagram.
i. Use the conduit hole located at the bottom right
of the manifold cabinet to route conduit to supply 120
VAC to the power supply. 110 VAC to 240 VAC, 50 to 60
Hz single phase may be used with all units.
Connect the nal line hi/lo pressure switch wires to
the correct location. There is a 12” length pair of low
voltage wires with a near the PLC with a lever nut on
the end. Make sure the wire is routed in a way that the
manifold cabinet door can open without stretching the
wire.
Connect the Emergency Reserve transducer and
pressure switch to the correct terminal block near the
PLC. The transducer and pressure switch are both
installed on the emergency reserve regulator.
The emergency reserve pressure switch and pressure
transducer wiring should be routed through the hole
from which the emergency reserve is connected. The
wiring should be routed down the side of the manifold,
across the bottom and up to the controls to maintain
accessibility to all of the plumbing components. Once
the wires reach the bottom of the manifold the user
should be able to follow the routing of the other
transducer and pressure switch.
NEMA 4 (optional)
If the optional NEMA 4 enclosure is installed, route the
power and low voltage wires through the appropriate
weatherproof grommet.

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 9 of 24
the installer MUST check for leaks at all connections
made during installation.
Power On
Turn on the 110-120 VAC power to the Manifold.
Make sure the circuit breaker is switched to on near
the power supply.
The Powerex FirstCall™ Manifold is pre-programmed
for the appropriate gas and standard NFPA 99 pressure
settings from the factory. However, some settings are
able to be adjusted from the touchscreen HMI control
panel.
Settings
Log in to Settings:
Press upper right part of screen for at least 3 seconds.
Window pops up, hit the middle button for login.
Pigtail & Cylinder Installation
The check valve outlet ttings on the manifold header
bars are CGA gas-specic threads. Each of these ttings
has an integral check valve. Make sure the 3-digit CGA
number stamped on the outer perimeter of these
ttings matches the CGA number stamped on the
mating CGA ttings on the pigtails. Attach the pigtails to
the check valve outlet ttings on the manifold header
bars.
Liquid x Liquid
Connect the other end of the pigtail to the “Use” valve
mating tting on the portable bulk vessel. Open the use
valve (turn counter-clockwise to open). The pressure
building valve or regulator should be turned on or
opened for all vessels connected to the manifold (both
service and reserve banks). Allow approximately 1 hour
for the portable bulk vessel(s) to build pressure.
Cylinder x Cylinder
Connect the pigtails to the check valve outlets on the
manifold headers
Check the master valves to be certain they are open
(turn counter-clockwise to open). (Note: the master
valve should always be left open. It is to be used only in
the event of an emergency).
Check all cylinder and pigtail connections for leaks
using an oxygen safe leak test solution (any bubbles
forming around connections indicate leakage). The
manifold has been tested for leaks at the factory, but

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 10 of 24
For user select “USER.”
Default password is Pass123 (case sensitive). This
password can be changed in the settings screen.
Once the correct password is entered, the Manifold
will now be in “Settings” mode. A “Settings” gear icon will
appear at the bottom.
Press the “Settings” icon to get to the Settings Menu.
Alarm History
The Alarm History screen shows a record of all alarm
events up to 32, including the specic alarm condition
and the date and time of the alarm event.
This screen also has the ability to sort the alarm history
list by a number of dierent criteria. The default sort is
“Time”. The alarm history list can be sorted dierently
by pressing the Alarm History Sort button in the upper
left corner.
Alarm Status
The Alarm Status screen shows a list of all possible
alarm conditions for the maximum number of gases
and input signals available in the Powerex FirstCall ™
Alarm System.
The default alarms for each manifold are as follows:
• Main line pressure high
• Main line pressure low
• Changeover to secondary supply
• Emergency reserve in use
• Emergency reserve low

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 11 of 24
Alarm Summary
The Alarm Summary screen shows a list of all active
alarm conditions.
This screen is also accessible from the red bar with
the scrolling marquee at the bottom of the screen that
pops up during an alarm event. Press the “list” icon,
which is second from the left on the red bar.
Alarm conditions can be acknowledged and cleared
on this screen. Further details are given in the “Alarm
Event” section under “Operation.”
Gas Settings
The Gas Setup screen displays the default UOM,
default changeover pressure, default nal line high
pressure alarm setpoint, default nal line low pressure
setpoint, and default emergency reserve low pressure
setpoint.
None of these settings are adjustable by the user at
the screen.
The nal line pressure switch high and low settings
are adjustable at the pressure switch. When adjusted,
the new limits will not show up on the Gas Setup screen.
BACnet
Enter desired device name – must be exactly 6
characters. Default name is always PWXPLC.
Enter desired Device ID number – any number
between 0 and 255.
IP address for the PLC is already preloaded, but is
able to be changed if required.
Subnet Mask is defaulted to 255, 255, 255, 0 – this
can be changed if required.
Default Gateway is set at 0, 0, 0, 0 – this can be
changed if required.
Press “Apply” to save settings, and the PLC will reboot
after pressing “OK.”
Change Password
To change the password, press the “Change
Password”, enter the old password, enter the desired
new password, and conrm the desired new password.
Screen Settings

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 12 of 24
The Powerex FirstCall™ Manifold is factory-set with a
5 minute screen saver. The screen goes dark after 5
minutes, but reactivates if there is an alarm or if the
screen is touched.
To disable the screen saver, press the “DISABLE
SCREEN SAVER” button.
Screen brightness is set to 50% from the factory.
This can be changed higher or lower depending on
preference.
To maximize the lifespan of the screen, Powerex
advises that the screen saver remain enabled and the
default screen brightness be no higher than 50%.
Maintenance Mode (image toggled)
When Maintenance Mode is toggled, the manifold will
not generate an alarm during a normal alarm event.
This enables a technician to perform maintenance
without setting o an alarm signal.
Maintenance mode automatically toggles back to
normal after 15 minutes. A timer is displayed right
below the button.
On the main screen, a yellow bar that reads “IN
MAINTENANCE MODE” displays on the top.
Startup & Verication of Changeover
Power the manifold on. Verify on the screen that all 3
banks read EMPTY.
SLOWLY open one cylinder valve on the left bank. The
left bank pressure gauge inside the cabinet and the
graphical display on the screen should show the full
pressure of the cylinder. It should read “IN USE” with an
arrow over top of the left bank cylinder display.
SLOWLY open one cylinder valve on the right bank.
The right bank pressure gauge inside the cabinet and
the graphical display on the screen should show the full
pressure of the cylinder. It should read “READY” over
top of the left bank cylinder display.
Turn o all open cylinder valves on the left bank. Using
the bleed valve on the left nal line regulator, create a
slight ow of gas. The left bank pressure should fall and
the PLC will automatically switch over to the right bank.
Delivery pressure remains constant. Left bank will show
EMPTY in red and the Changeover to Secondary Supply
alarm should activate on the Master Alarm and on the
home screen.
Close the bleed valve on the left nal line regulator
and SLOWLY reopen the cylinders on the left bank. The
left bank pressure gauge and graphical display should
return to full pressure. The left bank will now show
“READY” above the cylinder graphic. The Changeover to
Secondary Supply alarm will stop.
Repeat the last two steps to simulate an empty right
bank.
To test the Emergency reserve function and alarms,
SLOWLY open both the left and right bank valves, as
well as one emergency reserve high pressure cylinder
valve. The left bank should read “IN USE” and the right
bank should read “READY”, and both banks should

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 13 of 24
show full.
Turn o all open left and right bank cylinder valves.
SLOWLY open one emergency reserve high pressure
cylinder
The active bank is able to be adjusted from the HMI
screen
Log in to the Settings Menu and toggle Maintenance
Mode.
A button will appear on the lower left, “PRESS TO
MANUALLY TEST SOLENOIDS”. Press this button
and 2 new buttons, “ENERGIZE LEFT SOLENOID” and
“ENERGIZE RIGHT SOLENOID” will appear underneath
each cylinder graphic.
Pressing these buttons will toggle the “IN USE” status
to that bank. To switch over to the right bank, press the
“ENERGIZE RIGHT SOLENOID” button. To switch to the
left bank, press the “ENERGIZE LEFT SOLENOID” button.
Please note that this only switches Left and Right
liquid banks. The emergency reserve bank cannot
be activated from the screen as it operates solely on
pressure dierential.
Final Line Pressure Adjustment
The nal line pressure may be adjusted by adjusting
the spring tension on the line regulators by adjusting
the tightness of the hex nut on top.
Tighteningthenut will increase thepressure, loosening
the nut will decrease the pressure. The line pressure
setting may be monitored on the pressure gauge at the
top of the manifold. To get the most accurate reading
of the regulator setting there needs to be some ow
through the regulator. The bleed valves allow adequate
ow.
Cylinder Replacement & Handling
Close all cylinder valves on the depleted bank.
SLOWLY loosen and remove the pigtail connection
from the depleted cylinders.
Remove depleted cylinders and replace protective
caps.
Place and secure full cylinders into position using
chains, belts or cylinder stands.
Remove protective cylinder caps from full replacement
cylinders. With the valve outlet pointed away from all
people in the area, slowly open each cylinder valve
slightly for a split second to blow out any dirt or
contaminants that may have become lodged into the
cylinder valve.
Connect pigtails to cylinder valves and tighten with
wrench.
SLOWLY turn each cylinder valve until each cylinder
is fully on.
Leak test the connections using an oxygen approved
leak test solution.
Observe the following conditions: The alarm is
cancelled and one of the banks shows “IN USE” and the
other bank shows “READY.”
The manifold supply bank is now replenished and
automatically placed in “reserve.”

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 14 of 24
Maintenance Schedules
Maintenance Mode
Toggling the Maintenance Mode button will allow
testing and service to be performed on the manifold
without triggering alarm sent to the master panel.
Maintenance mode is automatically turned o after
15 minutes. A timer is shown near the button once it’s
activated. On the main screen, a yellow bar that reads
“IN MAINTENANCE MODE” displays on the top.
Regulator Settings
Once a year, check and verify regulator settings.
Line Regulator Switching
The line regulators should be alternated every 3
to 6 months. Alternate the regulators by manually
opening the valves directly upstream and downstream
of alternate regulator, then manually shutting o the
valves directly upstream and downstream of the current
active regulator. A bleed valve is located on the side of
each nal line regulator to purge trapped gas.
Check for leaks semi-annually in all threaded ttings,
including pigtail connection to header, header union to
manifold, and high pressure relief valve.
Alarm set points, proper operation of changeover,
header shuto valves should all be veried and/or
tested annually.
Pigtails are to be replaced every 5 years after date of
startup.

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 15 of 24
Wiring Diagram

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 16 of 24
Flow Diagram
REVISION NOTES
DESCRIPTION ECN PR/NOR
PRODUCTION RELEASE PXEC0362 N/A
Liquid Manifold Assembly
MFLD-LIQ-NFPA-XX
TOLERANCES,
UNLESS OTHERW ISE
SPECIFIED
DRAWINGS TO CONFORM T O CURRENT REVISION OF THE FOLLOWING
ANSI STANDARDS:
Y14.3 MULTI AND SECTIONAL VIE W DWGS
Y14.5 DIMENSIONING AND TOLERANCING
SYMBOL LEGEND
0.XX ±
0.XXX ±
g ±
SOLID EDGE
DRAWING
INCH
CONFIDENTIAL DISCLOSURE
This drawing is the property of POWEREX
of the SCOTT FETZ ER
COMPANY and is subject to return on demand.
Its contents are confidential and must not be
copied or subm itted to
outside parties for use or examination.
SHEET 4 OF 4 1:1
SCALE
ORIGINATION DATE APPROVALS ON
FILE IN PLM
729176
ITEM ID:
MATERIAL:
DESCRIPTION
150 PRODUCTION DRIVE, HARRISON OH 45030
[phone]
DO NOT SCALE DRAWING FOR
DIMENSIONS
DRAWING NUMBER REVISION
D
SIZE
10/21/202
0
Liquid Manifold Assembly
MFLD-LIQ-NFPA-XX
D
N/A
.05
.005
1
AUTHOR
ASoulek
LEFT BANK RIGHT BANK
400 PSI
PRESSURE RELIFE
VALVE
DOME LOADING
SOLENOIDS
MASTER VALVE
MASTER VALVE
LINE REGULATOR
LINE REGULATOR
SOURCE VALVE
LINE PRESSURE
HIGH/LOW SWITCH
LINE PRESSURE
TRANSDUCER
DOME LOADED
REGULATOR
BANK PRESSURE
TRANSDUCER
BANK PRESSURE
TRANSDUCER
BANK PRESSURE
SWITCH
BANK PRESSURE
SWITCH
EMERGENCY RESERVE
INLET
RESERVE
PRESSURE
TRANSDUCER
RESERVE
PRESSURE
SWITCH
BALL VALVE
RELIEF VALVE
CHECK VALVE
FLEX LINE
PRESSURE SWITCH
PRESSURE TRANSDUCER
SOLENOID
ECONOMIZER CIRCUIT
VENT LINE CONNECTION
SOLENOID PLUMBING
PORT 1: INLET FROM
LINE PRESSURE
PORT 2: OUTLET TO
REGULATOR DOME
PORT 3: OUTLET TO
VENT LINE

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 17 of 24
Parts
REVISION NOTES
DESCRIPTION ECN PR/NOR
PRODUCTION RELEASE PXEC0362 N/A
Liquid Manifold Assembly
MFLD-LIQ-NFPA-XX
TOLERANCES,
UNLESS OTH ERWISE
SPECIFIE D
DRAWINGS TO CONFORM TO CURRENT REVISION OF THE FOLLOWING
ANSI STANDARDS:
Y14.3 MULTI AND SECTIONAL VIEW DWGS
Y14.5 DIMENSIONING AND TOLERANCING
SYMBOL LEGEND
0.XX ±
0.XXX ±
g ±
SOLID EDGE
DRAWING
INCH
CONFIDENTIAL DISCLOSURE
This drawing is the property of POWEREX
of the SCOTT FETZER
COMPANY and is subject to return on demand.
Its contents are confidential and must not be
copied or submitted to
outside parties for use or examination.
SHEET 2 OF 4 1:2.5
SCALE
ORIGINATION DATE APPROVALS ON
FILE IN PLM
729176
ITEM ID:
MATERIAL:
DESCRIPTION
150 PRODUCTION DRIVE, HARRISON OH 45030
[phone]
DO NOT SCALE DRAWING FOR
DIMENSIONS
DRAWING NUMBER REVISION
D
SIZE
10/21/202
0
Liquid Manifold Assembly
MFLD-LIQ-NFPA-XX
D
N/A
.05
.005
1
AUTHOR
ASoulek
PRESSURE SWITCH
CHANGE PRESSURE 125: PE980510AV
CHANGE PRESSURE 250: PE980511AV
PRESSURE SWITCH
CHANGE PRESSURE 125: PE980510AV
CHANGE PRESSURE 250: PE980511AV
PRESSURE TRANSDUCER
PE0004112AV
HEADER INLET BLOCK
HEADER INLET BLOCK
0-4000 PSI PRESSURE GAUGE
GA750100AV
0-4000 PSI PRESSURE GAUGE
GA750100AV
0-4000 PSI PRESSURE GAUGE
GA750100AV
0-400 PSI PRESSURE GAUGE
GA750200AV
0-400 PSI PRESSURE GAUGE
GA750200AV
DOME LOADED REGULATOR
ST981050AV
EMERGENCY RESERVE REGULATOR
ST981050AV
PRESSURE TRANSDUCER
PE0004110AV
EMERGENCY RESERVE
HEADER INLET BLOCK
0-400 PSI PRESSURE GAUGE
GA750200AV
SOLENOID VALVE
ST981041AV
CHECK VALVE
ST981070AV
CHECK VALVE
ST981070AV
1/2" NPT CHECK VALVE
ST981005AV
400 PSI SAFETY RELIEF VALVE
V-217004AV
LINE REGULATOR
BLEED VALVE
ST981004AV
1/2" BALL VALVE WITH UNION
ST981012AV
SOURCE VALVE (INSTALLED BY USER)
VP002700AV
LINE PRESSURE SWITCH WITH GAUGE (INSTALLED BY USER)
PX-PSB-04 - NITROUS OXIDE
PX-PSB-08 - CARBON DIOXIDE
PX-PSB-12 - NITROGEN
PX-PSB-24 - OXYGEN
RESERVE LOW PRESSURE SWITCH
PE980512AV
GAS VENT CONNECTION
NOTES:
1. APPROX WEIGHT: 83 LB
SHIP LOOSE PARTS
PART NUMBER DESCRIPTION QUANTITY
ST981064AV 1/4 FNPT X 1/8 MNPT PIPE BUSHING
(SUPERIOR: B-294)
1
VP002700AV SOURCE VALVE
1
PX-PSB-* GAS SPECIFIC PRESSURE SWITCH
1
ST981050AV DOME LOADED REGULATOR
1
ST981002AV 1/4" PLUG
1
ST980970AV MANIFOLD INLET BLOCK
1
ST981029AV 1/2" NPT X 6" LONG NIPPLE
1
GA750100AV 0-4000 PSI PRESSURE GAUGE
1
GA750200AV 0-400 PSI PRESSURE GAUGE
1
PE0004110AV 3000 PSI PRESSURE TRANSDUCER
1
PE0004112AV 1500 PSI ACTIVATION PRESSURE
SWITCH
1
ST981024AV INLET FILTER (GMF-3341)
1
ST981043AV HEADER FILTER RETAINING RING
(SUPERIOR: GMF-3342)
1
LINE REGULATOR
55 PSI - ST981051AV
100 PSI - ST981052AV
180 PSI - ST981053AV
LINE PRESSURE TRANSDUCER
TDCR-O2
TDCR-N2
TDCR-N2O
TDCR-CO2
SAFETY RELIEF VALVE
75 PSI - V-217001AV
150 PSI - V-217002AV
250 PSI - V-217003AV
SOLENOID REGULATOR
ST981054AV
FOR HYP AND N2 MODELS ONLY
DELIVERY PRESSURE SET TO 55 PSI
50 PSI INLINE CHECK VALVE
V-217005AV
PRESSURE TRANSDUCER
PE0004112AV

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 18 of 24
Flow Ratings
Flow Characteristics
Gas Type Flow per Container
Oxygen 5.8 SCFM (350 SCFH)
Nitrous Oxide 1.8 SCFM (110 SCFH)
Nitrogen 5.8 SCFM (350 SCFH)
Carbon Dioxide 2.5 SCFM (150 SCFH)
Argon 5.8 SCFM (350 SCFH)
Weight
75 lbs
Operating Temperature Range
32° to 104°F (0° to 40°C)
AC Input
110 to 240 VAC
DC Output
24 VDC
Input Fuse
2 Amp circuit breaker
Power Consumption
31.2 Watt
Specications
Dimensions
Pressure Settings
Parameter Delivery Pressure (PSI)
55 PSI 100 PSI 180 PSI
Intermediate Pressure –
Ready Bank 70 PSI 195 PSI 195 PSI
Dome Bias Pressure 55 PSI 55 PSI 55 PSI
Intermediate Pressure – In
Use Bank 125 PSI 250 PSI 250 PSI
Ready Bank Inlet Pressure
(Through Economizer) >175 PSI >300 PSI >300 PSI
Intermediate Relief Valve 400 PSI 400 PSI 400 PSI
Line Regulator Relief Valve 75 PSI 150 PSI 250 PSI
Changeover Pressure 125 PSI 250 PSI 250 PSI
Max. Bank Inlet Pressure 400 PSI 400 PSI 400 PSI
Max. Reserve Inlet Pressure 3000 PSI 3000 PSI 3000 PSI
Reserve Low (Liquid Only) 1500 PSI 1500 PSI 1500 PSI

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 19 of 24
BACnet
Object Name Object Name Description
FinalLPSI The displayed pressure value for Final Line Pressure
LefTnkPSI The displayed pressure value for the left tank
RihTnkPSI The displayed pressure value for the right tank
ChangePSI The tank change over pressure value
UOM Type The unit of measured used in relation to displayed pressure values
FinLinHSP The High Pressure alarm set point for Final Line Pressure
FinLinLSP The Low Pressure alarm set point for Final Line Pressure
FinalLoAl Final Line Pressure High Pressure Alarm Status; 0=No Alarm, 1=Alarm
FinalHiAl Final Line Pressure Low Pressure Alarm Status; 0=No Alarm, 1=Alarm
LeftEmpty Left Tank Empty alarm; 0=No Alarm, 1=Alarm
RightEmpt Right Tank Empty alarm; 0=No Alarm, 1=Alarm
LowBatrAL PLC/HMI battery alarm status; 0=Normal, 1=Alarm.
(Note: To maintain saved settings, change the battery while the HMI/PLC
is still powered by 24VDC power.)"
AlarmStat General Fault status; 0=No Alarm, 1=Alarm
EmergnPrs The displayed pressure value for the emergency tank
EmrgInUse The emergency tank is in use; 0=No Alarm, 1=Alarm
EmergRsLo The emergency tank is low in pressure; 0=No Alarm, 1=Alarm
EmrgInUse Theemergencytankisinuse;0=NoAlarm,1=Alarm
EmergRsLo Theemergencytankislowinpressure;0=NoAlarm,1=Alarm
Appendix A. BACnet Object Names

FirstCall™ Liq x Liq Medical Gas Manifold
Operating & Maintenance Manual
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599800AV • 15 January 2021
Page 20 of 24
Powerex Limited Warranty
Warranty and Remedies.
(a) Standard Period of Warranty – Parts and Labor. Powerex warrants and represents all Products shall be free
from Defects for the rst twenty-four (24) months from the date of shipment by Powerex. During such warranty period,
Powerex shall be fully liable for all Defects in the Products (the “Product Defects”), i.e., all costs of repair or replacement,
which may include “in and out” charges, so long as the Products are located in the United States or Canada, and the
Products are reasonably located and accessible by service personnel for removal. “In and out” charges include the costs
of removing a Product from buyer’s equipment for repair or replacement.
(b) Additional Period of Warranty – Parts Only (No Labor). In addition to the above, Powerex warrants the
products described herein shall be free of Defects for a period of sixty (60) months from the date of shipment by
Powerex, with the exception of any components which are recommended to be replaced in less than sixty months in our
Installation/Operation manuals. Within said period Powerex will repair or replace any part or component which is proven
to be defective in either material or workmanship. This warranty covers parts only. Labor is not included. This warranty is
valid only when the product has been properly installed according to Powerex specications, used in a normal manner
and serviced according to factory recommendations. This warranty does not cover failures due to damage which occurs
in shipment or failures which result from accidents, misuse, abuse, neglect, mishandling, alteration, misapplication or
damage due to acts of nature.
(c) General. Powerex warrants each Powerex branded Pipeline Accessory (collectively “Products”, individually each a
“Product”) to be free from defects in material and workmanship (“Defects”) at the date of shipment. EXCEPT AS SET FORTH
BELOW, NO OTHER WARRANTY, WHETHER EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE, SHALL EXIST IN CONNECTION WITH THE SALE OR USE OF SUCH PRODUCTS.
TO THE EXTENT PERMITTED BY LAW, ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED. All warranty claims must be
made in writing and delivered to Powerex in accordance with the procedures set forth on its website (www.powerexinc.
com), or such claim shall be barred. Upon timely receipt of a warranty claim, Powerex shall inspect the Product claimed
to have a Defect, and Powerex shall replace any Product which it determines to have had a Defect; provided, however,
that Powerex may elect, upon return of the Product, to refund to buyer any part of the purchase price of such Products
paid to Powerex. Freight for returning Products to Powerex for inspection or for shipping warranty parts shall be paid
by buyer where permitted by applicable law. Powerex is not responsible for any import fees, taxes, duties, licenses or
other fees imposed by any governmental authority upon the production, sale, shipment and/or use of Products covered
hereunder. The warranties and remedies herein are the sole and exclusive remedy for any breach of warranty or for
any other claim based on any Defect, or non-performance of the Products, whether based upon contract, warranty or
negligence.
(d) Coverage. The warranty provided herein applies to Powerex pipeline products only.
(e) Exceptions. Notwithstanding anything to the contrary herein, Powerex shall have no warranty obligations with
respect to Products:
(i) That have not been installed in accordance with Powerex’s written specications and instructions;
(ii) That have not been maintained in accordance with Powerex’s written instructions;
(iii) That have been materially modied without the prior written approval of Powerex; or
(iv) That experience failures resulting from operation, either intentional or otherwise, in excess of rated capacities or
in an otherwise improper manner.
The warranty provided herein shall not apply to: (i) any defects arising from corrosion, abrasion, use of insoluble
lubricants, or negligent attendance to or faulty operation of the Products; (ii) ordinary wear and tear of the Products; or
(iii) defects arising from abnormal conditions of temperature, dirt or corrosive matter; (iv) any OEM component which
is shipped by Powerex with the original manufacturer’s warranty, which shall be the sole applicable warranty for such
component.
Limitation of Liability. NOTWITHSTANDING ANYTHING TO THE CONTRARY HEREIN, TO THE EXTENT ALLOWABLE