6
FORM NO. L-20113-E-0501
ADJUSTMENT
Nexen’s EN40-IS has been factory adjusted and should
not require further adjustment.
The EN40-IS is available in three models. The model
designation can be found on the serial number tag,
located on the front of the EN40-IS. If adjustments are
required, determine the model and refer to Table 1 for the
correct values called out in the adjustment procedure.
TABLE 1
Rotate to adjust
output to Pmin
Gauge Port
Plug
FIGURE 12
SPAN ADJUSTMENT
NOTE: Supply pressure must be Psup.
1.
Perform Zero Adjustment.
NOTE: Do not remove air pressure gauge.
2.
Using the Manual Control Pot located on Controller,
adjust the Controller output to
Imax.
3.
Remove the top cover.
4.
Using a screwdriver, adjust the Span Pot to obtain
Pmax
output (See Figure 13).
FIGURE 13
Span Pot
L
E
D
O
M
S
A
1
-
0
4
N
E
S
B
1
-
0
4
N
E
S
D
1
-
0
4
N
E
)
C
D
A
m
(
n
i
m
I
4
4
4
)
C
D
A
m
(
x
a
m
I
0
2
0
2
0
2
)
i
s
p
(
n
i
m
P
5
.
1
5
.
1
3
)
i
s
p
(
x
a
m
P
7
5
5
8
5
1
)
i
s
p
(
p
u
s
P
0
7
0
0
1
0
2
ZERO ADJUSTMENT
1.
Remove the Gauge Port Plug and install a suitable air
pressure gauge.
2.
Set Controller Mode Switch to
Manual
.
3.
Using the Manual Control Pot located on Controller,
adjust the Controller output to
Imin
.
4.
Remove the Zero Adj. Cover.
5.
Using a screwdriver, adjust the EN40-IS output to
Pmin
(rotate clockwise to increase, counter
clockwise to decrease) (See Figure 12).
NOTE: Do not adjust pressure to 0 psi. There must
be positive pressure at the Poppet and Seat.
6.
Replace the Zero Adj. Cover.
7.
Remove the air pressure gauge and reinstall the
Gauge Port Plug.
®
DIST. AUTORIZADO
MEX (55) 53 63 23 31
QRO (442) 1 95 72 60
MTY (81) 83 54 10 18
[email protected]
