Repair kits and replacement parts, Specifications, Troubleshooting – Wilkerson ER2 User Manual
Page 6
Repair Kits and Replacement Parts
Control Board LCD 30/60 psig (2.0/4.0 bar) ..... ERP-95-786
Control Board LCD 90/125 psig (6.0/8.6 bar) ... ERP-95-788
Control Board, STD, 30/60 psig (2.0/4.0 bar) ... ERP-95-798
Control Board, STD, 90/125 psig (6.0/8.6 bar) . ERP-95-799
LCD Board and Ribbon ..................................... ERP-95-787
Intake Valve ....................................................... ERP-95-790
Exhaust Valve .................................................... ERP-95-791
Diaphragm Kit, ER1 ........................................... ERP-95-792
Diaphragm Kit, ER2 ........................................... ERP-95-793
Bottom Valve and Valve Spring ........................ ERP-95-794
Specifications
Min
Max
Nom
Units
Supply Voltage
12
28
—
VDC
Supply Current
—
250
80
mA
Control Signal
Voltage
0
10
—
VDC
Impedance
—
200
KOHM
Current
4
20
—
mA
Impedance
—
600
OHM
Internal
—
—
—
—
Monitor Output
0
10
—
VDC
Overall Accuracy
—
—
1.5%
SCALE
Supply Pressure
20
150
—
psig
(1.4)
(10.3)
—
(bar)
Output Pressure
0
30/60/90/125
psig
(0.0)
(2/4/6/8.6)
(bar)
Temperature
40
125
—
°F
(4.4)
(51.6)
—
(°C)
Flow Rate [150 psig (10 bar) inlet and 90 psig (6 bar)
outlet with a 5 psid (0.3 bar)]
ER1 ................................................................ 200 SCFM (94.3 dm
3
/s)
ER2 ................................................................ 200 SCFM (94.3 dm
3
/s)
Note: For optimum operation, inlet pressure should be a minimum
of 15 psig (1.0 bar) above the controlled pressure.
Inches
millimeters
Dimensions
Models
A
B
C
D
E
F
G
ER1
6.31
4.71
2.35
.79
1.79
2.35
1.20
160
120
60
20
45
60
30
ER2
6.31
4.71
2.88
.79
1.79
2.88
1.20
160
120
73
20
45
73
30
Front View
Side View
Troubleshooting
Unit Fails to Operate
1) Verify supply voltage
2) Verify control voltage
3) Intake valve or controller failure
4) Apply 12 VDC to valve and listen for slight
click indicating valve is working
5) Replace control board
Unit Remains Pressurized
1) Verify control voltage
2) Exhaust valve or controller failure
3) Apply 12 VDC to valve and listen for
slight click indicating valve is working
4) Replace control board
LCD Fails to Display Pressure
1) Verify supply voltage
2) Verify that ribbon cable is secure on both ends
3) Have dealer check LCD board and replace if necessary
4) Replace control board
Unit Has Constant Leak or is Unstable
1) Inspect and clean bottom valve seals and
lubricate bottom valve
2) Inspect and clean diaphragms
A
B
E
D
C
F
G