ROCON DeltaPoint Jr - Flowmeter Display Unstable; Solenoid Valve Does Not Open; Fault Alarm Signal Not Received at Weld Controller

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ROCON LLC
2. Check the solenoid interrupt line (Pin 6 of the receptacle) and make sure it is low.
3. Check the jumper settings on JP2, JP4 and JP5. Make sure they are all set for “Active Low.”
Flowmeter
See TROUBLESHOOTING, “Unit Will Not Start”, to ensure sufficient water flow is available for
flowmeter to operate.
Shut-Off Valve
Internal Plunger Pilot Hole May Be Plugged
The following procedure will determine if pilot is the problem.
1. Close the water supply and return ball valves.
2. Turn the manual bypass stem on the shut-off valve 90 degrees to the Bypass position. See the
shut-off valve “Manual Override” illustration under MAINTENANCE.
3. Open the water supply and return ball valves.
4. Does the flowmeter indicate water flow?
If yes, see MAINTENANCE – “Shut-Off Valve, Clean Diaphragm Orifice/Plunger Pilot Hole.”
If no, consult factory.
Flowmeter Display Unstable
1. Check Unit Will Not Start to ensure that no air is trapped in the water line. Also, a foreign object
trapped on the bluff could cause an unstable condition. See MAINTENANCE for the required tools
and the proper method to remove the bluff.
2. Close water supply and return ball valves.
3. Remove the power connector from the unit.
4. Put the shut-off valve manual bypass stem in the bypass position. See the shut-off valve “Manual
Override” illustration under MAINTENANCE.
5. Remove the bluff stem underneath the DeltaPoint Uno flowmeter, and clean if dirty. Turn the “Supply”
water shut-off valve open ¼ turn or until water is slowly flowing out of the bluff mounting hole. (This is
to ensure that air does not leak into the piping.)
6. Replace the bluff; turn the shut-off valve manual bypass stem back to normal position. Open the
supply water valve and connect the power cable to the unit. If the display is normal, unit is ready for
operation. If not, consult factory.
Solenoid Valve Does Not Open
1. Make sure there is power to the unit.
2. Push BYPASS switch (orange light on).
3. Check the LED on the solenoid valve DIN connector. If the light is not on, the problem may lie in the
internal wiring. Contact the factory for further instructions.
4. If the light is on, make sure the valve connector is plugged in tightly. If this does not fix the problem,
replace the coil (see MAINTENANCE).
Fault Alarm Signal Not Received at Weld Controller
Flowmeter
1. Make sure the flowmeter is indicating flow fault (3-digit LED flashing).
2. Check the setting of JP1 (see JUMPER SETTINGS).
3. Check the connector on J4 (see ELECTRICAL CIRCUIT) to ensure that the 6-pin receptacle is
plugged in correctly to the board.
4. Check the voltage on Pin 2 of the 6-pin receptacle (see ELECTRICAL CIRCUIT). This pin should
be high in fault mode.
Supervisor: If Steps 1-3 checked out okay, please check for proper wiring between the unit and the weld
controller.