Dover Wayne Helix WM048523 - IEC Proportional Valve and Coil Replacement

6.7 IEC Proportional Valve and Coil Replacement
In IEC regions, the valve coil cables are not in a conduit. The cables are routed up through a
washer and rubber grommet in the vapor barrier. See Fig 6.9.
To replace the valve:
1
Trip emergency shear valve and run a sale to drain the line and to relieve pressure.
2
Power down the dispenser and submersible pump or suction pump at the circuit breaker inside
the building.
3
Push down on the name plate on top of the coil, then remove clip and name plate.
4
Raise coil and rotate away from the valve. Save spring washer under the coil.
5
Place a container under the valve to catch the fuel.
6
Remove product tube lock pin from valve and remove tube from valve.
7
Loosen (2) 10 mm screws securing the valve retaining plate to the meter, and rotate retaining
plate upward.
8
Pull valve out from meter.
9
Install new o-ring on new valve and on product tube, then install valve.
10
Reinstall coil onto valve
11
Power up dispenser and reset shear valve. Run sales to clear air from line, check for leaks
and test operation.
To replace the coil only
1
Power down the dispenser at the iGEM power switch inside the electronics head.
2
Disconnect valve coil wires at J3 on computer board.
3
Push down on the name plate on top of the coil, then remove clip and name plate.
4
Raise coil up and rotate away from the valve. Save spring washer under the coil.
5
Remove washer and cable restraint in the vapor barrier. Save parts.
6
Pull wires down from vapor barrier.
7
Install new coil in reverse order, reinstalling the washer and cable restraint in the vapor barrier.
8
Power up dispenser and test operation.
86 WM048523 Rev 08 01/2019
6 Replacement Procedures