8
Parker Hannifin Corporation
Bulletin TI-HFX-3D
Elevated Pressure
Applications
(>10 psig/0.7 barg)
The user must determine the nitrogen purity, flow rate, and pressure required by the application
prior to adjusting the system for desired outlet nitrogen purity and flow rate. The inlet air pressure
must be constant in order for the system to supply nitrogen of consistent purity to the application.
The inlet pressure to the Balston Nitrogen Generator should be maximized (within process and
generator parameters) to optimize the operation of the membrane module. The required inlet air
flow rate and all flow and purity specifications for different operating conditions are shown in the
specifications listing on pages 12-13.
Flow adjustments are made according to the values on the Nitrogen Purity label attached to the
front of the generator (and shown below).
If the Balston Nitrogen Generator is being used to deliver nitrogen at or near atmospheric pressure
(e.g. purging or blanketing applications), use the following procedure for start-up and adjustment of
the system.
1
1
1
1
1
Open the (customer installed) inlet air gate valve.
2
2
2
2
2
Adjust the (customer installed) inlet air pressure regulator until the Operating Pressure Gauge
(see Figure 1) shows the pressure reading required to achieve the purity and flow to match the
application (see Purity/Flow label above).
3
3
3
3
3
Adjust the Outlet Pressure Regulator (see Figure 1) until the Outlet Pressure Gauge reads less
than 10 psig (0.7 barg).
4
4
4
4
4
Consult the Nitrogen Purity Label on the control panel of the generator to determine the proper
flowmeter setting for the required process nitrogen purity and inlet air pressure. Adjust the flow
control valve on the control panel (see Figure 1) to yield the proper flowmeter reading.
5
5
5
5
5
Allow the system to reach equilibrium at the desired flowrate, pressure, and purity parameters.
This should take approximately 15 minutes.
6
6
6
6
6
Check the purity readings on the oxygen analyzer on a routine basis. If the nitrogen purity level
falls below the desired level, readjust the flow control valve until the proper nitrogen purity level is
reached. (Note: If more than minor adjustments of the flow control valve are required to reach
the desired purity level, please see the Troubleshooting section of this manual for further guid-
ance.)
If the Balston Nitrogen Generator is being used to deliver nitrogen at an elevated pressure
(>10 psig/0.7 barg), use the following procedure for start-up and adjustment of the system. (Note:
In elevated pressure applications, the customer should install a flow controller downstream from the
Nitrogen Generator.)
1
1
1
1
1
Open the (customer installed) inlet air gate valve.
2
2
2
2
2
Adjust the (customer installed) inlet air pressure regulator until the Operating Pressure gauge
(see Figure 1) shows the pressure reading required to achieve the purity and flow to match the
application (see Purity/Flow label, page 13).
3
3
3
3
3
Turn the Flow Control Valve to its fully open position
4
4
4
4
4
Set the Outlet Pressure Regulator (see Figure 1) to the desired outlet nitrogen pressure.
5
5
5
5
5
Consult the Nitrogen Purity Label on the control panel of the HFX0-3 to determine the proper
dimensionless flowmeter setting for the required process nitrogen purity and operating air
pressure. Adjust the (customer installed) flow controller until the dimensionless flowmeter shows
the correct reading (based on the Nitrogen Purity Label).
6
6
6
6
6
Allow the system to reach equilibrium at the desired flowrate, pressure, and purity parameters.
This should take approximately 15 minutes.
7
7
7
7
7
Check the purity readings on the oxygen analyzer on a routine basis. If the nitrogen purity level
falls below the desired level, readjust the downstream flow controller until the proper nitrogen
purity level is reached. (Note: If more than minor adjustments of the downstream flow controller
are required to reach the desired purity level, please see the Troubleshooting section of this
manual for further guidance.)
Operation: Adjustment Procedure
System Adjustment for
Desired Outlet Purity
Atmospheric Pressure
Applications
(<10 psig/0.7 barg)
