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 off 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 differential.
Final Line Pressure Adjustment
The final line pressure may be adjusted by adjusting
the spring tension on the line regulators by adjusting
the tightness of the hex nut on top.
Tightening the nut will increase the pressure, 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 flow
through the regulator. The bleed valves allow adequate
flow.
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.”
Summary of Contents for Medical FirstCall MFLD-LIQ-NFPA-GG-PSI
Page 2: ......
