K3.1.142e Manual NitroFlow Lab - 40 -
oxygen level can be read on the main screen of the display.
ATTENTION
The response time of the measurement is slow. Change
the flow in small steps of a quarter turn per step and wait
until the display reading changes.
Do not close the flow control valve fully.
Adjusting the purity must preferably be done when the
system is at normal operating temperature after it has
run for some time (1-2 hrs)
Adjusting the purity must be done while all sheet metal
is mounted on the appliance
5. Once the desired purity has been reached, fasten the lock not on the
spindle of the purity control valve securely. Make sure you do not
change the setting.
ATTENTION
Fastening the lock nut too tightly can have an influence
on the purity of the output
7.4 Control of the outlet pressure
The outlet pressure of the NitroFlow
®
Lab can be controlled as follows.
Excess nitrogen will be vented; NitroFlow
®
Lab will run continuously. The
-function must be off.
• Close the ball valve V2 (refer to §3.3) at the outlet while the
system is running.
• Remove the right side panel
• Remove locking screw in knob of PCV;
• Pull the knob of the back pressure valve PCV out and turn it
such that the outlet pressure on the touch screen reads 8.0
bar(g)/116 psig at maximum. The lower the pressure is set the
better for energy consumption reasons and compressor life.
• Push the knob of the back pressure valve PCV and lock it with
the crew
• Open the ball valve V2 at the outlet.
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