YZ Systems Milton Roy • 201 Ivyland Road • Ivyland, Pennsylvania • USA • 18974 • P: 281.362.6500 • www.yzsystems.com
Page 67
NJEX EUR ver. 08-2021
Section 11: System Operation
Setting System Pressures and
Valves
Before attempting to start the system, check for
proper valve positions as indicated on the normal
operation schematic on the enclosure door, and set all
pressures accordingly,
figure 180
.
1. Adjust supply gas regulator to provide
5.2 Bar
to
the NJEX gas filter.
2. Temporarily open valve
V4
to fill the expansion
tank to a pressure of
1.72 Bar
then close
V4
.
3. Verify low pressure relief operation and adjust as
necessary to maintain a specific pressure of
1.72
Bar
.
4. Adjust the pump actuation regulator to the re-
quired pressure to inject into pipeline pressure
as indicated on the normal operation schematic
located on the enclosure door.
5. Adjust the blanket gas regulator for the
bulk stor-
age tank.
6. Check entire system for gas leaks and verify that
the set pressures remain constant.
Low Pressure Relief Adjustment
Section 11: System Operation
The overflow protector,
figure 181,
incorporates a low
pressure relief in the cap assembly for the purpose of
maintaining the maximum expansion tank pressure at
1.72 Bar
.
To test and adjust follow these steps:
1. With valve
V6
open, slowly open valve
V4
until
gas begins discharging at exhaust port of the
overflow protector.
2. Close valve
V4
and see where pressure stabilizes
which should be
1.72 Bar
.
3. If adjustment is needed:
a) First, loosen adjustment lock nut, located at
the top of the overflow protector. To increase
pressure in the tank, turn the adjustment
screw in, or to the right. To lower pressure
tank, turn the adjustment screw out, or to the
left.
b) Tighten the lock nut.
c) Repeat until the desired pressure of
1.72 Bar
is obtained as described in step 2 above.
Starting The System
Figure 180
Figure 181
Valve V4
Adjustment Screw
Adjustment Lock Nut
Overflow
Protector
Valve V6
Summary of Contents for NJEX 6300G
Page 1: ...NJEX 6300G 7300G N A T U R A L G A S O D O R I Z A T I O N S Y S T E M...
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Page 3: ...NJEX 6300G 7300G Instruction Operating Manual Version 08 2021...
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