5
Product Manual - APPS 160
Installation
• Remove the APPS 160 from the shipping crate Visually
inspect the unit to ensure there is no visible shipping
damage
• Move the APPS unit to the exact installation location
Location must be flat, level and made from a suitable
material such as concrete Normally the APPS unit is
installed outdoors on the pad, near the bulk supply vessel
–
Mark the locations of the four foot pad holes
–
Move the APPS unit and drill holes for 3/8” cement
anchors (not supplied)
–
Install cement anchors
–
Move the APPS unit back into position and bolt down
securely
• Connect supply piping from bulk supply vessel to APPS
160 inlet (1/2” male 45° flare fitting). Optional APPS fill
hose PN 11000920 can be used for this connection
• Connect APPS outlet (1” MVE female bayonet) to
vacuum insulated pipe system Refer to the
located on www
chartparts com for the proper procedure
• Connect 120 Volt / 60 Hz 200 watts (or 220 Volt / 50 Hz)
electrical supply to APPS control box
–
Conduit connector is located on bottom of control
box
–
Wiring should be connected to control box as follows:
◦
Black (hot) wire to “H” connection on terminal
block
◦
White (neutral) wire to “N” connection on terminal
block
◦
Green (ground) wire to “GND BAR”
–
Ensure both valve switches are in “AUTO” position
–
Replace control box cover and attach securely
Start-Up
• Ensure APPS 160 is completely and properly installed
• The APPS 160 unit should be purged with warm, dry
nitrogen gas prior to introducing liquid to ensure that the
unit does not have moisture in the inner vessel
• Turn APPS unit power switch to “ON” position
•
Open manual supply valve slightly to start flow of gas /
liquid into APPS unit
–
Throttle supply valve to prevent over-pressure of the
APPS (opening the relief valves) due to vaporization /
cool down losses during the initial fill.
–
Slowly open the supply valve as the APPS inner
vessel is cooled to cryogenic temperature
•
After fill cycle ends, APPS will vent more often than
normal for the first few hours.
•
After the APPS is filled and stabilized, the vacuum
insulated pipe system can be “started up” per the
recommended process
Operation
• During normal operation, the APPS 160 will function
automatically
• The liquid level switch will monitor the liquid nitrogen
level. It will open and close the fill valve to maintain the
liquid nitrogen level within the preset level
• The vent regulator will release gas as required to maintain
the APPS unit at the preset pressure
• The pressure switch will monitor the pressure If the
pressure rises above the set point, it will open the vent
valve and release gas to reduce the pressure
Caution! The vent valve will open without
notice. The venting gas will be
cold and loud.
• To take the APPS unit out of service turn the power
switch to “OFF ” The APPS unit will still contain liquid
nitrogen, therefore it will vent gas from the vent regulator
and supply liquid nitrogen from the outlet until the unit is
emptied
Installation / Operation
