4.4
Maintenance of Analog EZ
Modulevel
4.4.1 Replacing Transmitter PC Board
Refer to Figure 24 during this procedure.
1. Remove power from the unit.
2. Remove transmitter housing cover.
To remove old transmitter board:
3. Remove the two wires from spade connectors P3 and P4
and shield wire from the board mounting screw on the
transmitter PC board.
4. Unplug the potentiometer cables from the PC board con-
nector pins at J2.
5. Unplug the LVDT eight pin connector from the socket
at J1.
6. Clip the plastic tie wrap which holds the cable to the PC
board.
7. Remove two screws which secure the PC board bracket to
housing base and carefully remove board / bracket assembly.
8. Remove the four screws which hold the PC board to the
bracket.
9. Carefully remove the transmitter PC board from the trans-
mitter housing.
10. Install new PC board by reversing above steps. Be certain
that the red wire is attached to P3 and the black wire is
attached to P4.
4.4.2 Replacing Power Supply PC Board (120 and 240 VAC
controls only)
Refer to Figure 25 during this procedure.
1. Remove power from the unit.
2. Remove transmitter housing cover.
To remove old power supply board:
3. Mark the five wires connected to P1 through P5 and then
remove the wires from these connectors.
4. Remove the four screws which hold the PC board to the
bracket.
5. Carefully remove the power supply PC board from the
transmitter housing.
6. Install new PC board by reversing above steps. Be certain
that each wire is connected to the same spade connector as
on the original PC board.
Figure 25
Analog EZ Power Supply
PC Board Connections
Mounting
Screws (4)
Spade
Connectors
P2
P1
Spade connectors
P5
P4
P3
28
48-618 ES/EZ Modulevel Displacer Level Transmitter (Top Hat Assembly Design)
P4
P3
— TB1 +
¤
E Z MODULEVEL
¤
5300 BELMONT ROAD,
DOWNERS GROVE, IL 60515,
USA.
HEIKENSSTRAAT 6,
B 9240 ZELE,
BELGIUM.
www.magnetrol.com
REFER TO MODULEVEL MANUAL,
BULLETIN 48-615, FOR
INSTALLATION AND OPERATION
INSTRUCTIONS.
R13
J1
TP2
TP1
S1
AGC
ASSEMBLY PART NO.
30-2163
05-9118-001
R8
J
2
4 mA SET
(—) (+)
REV.
DIR.
Figure 24
Analog EZ Transmitter PC
Board Connections
Mounting Screws (4)
LVDT Eight Pin
Connector (J1)
Potentiometer
Cable
Connector
Pins (J2)
P4 P3