Veris-technologies MSP3 - Operating Instructions Manuel d'utilisateur télécharger pdf (Page 108)

Pub. #OM17-MSP3

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4. Test continuity of coil. With voltmeter set to ohms

(resistance), insert both leads into the weatherpack

connector leading to each solenoid. Start at the

jumper wire (at first connection from external

controller) and move to connector at solenoid. This

tests the continuity of the signal through the coil.

You should have continuity if the coil is working.

Test both solenoids.

Figure 13.4 Testing continuity of solenoid coil (at

weather-pack connector on jumper-wire.

5. Determine if coil is energizing. (This test integrates the previous two steps—if you have 12

volts going to the coil and the coil is functioning (has continuity), the coil should energize.)

Touch a small screwdriver or other metal object to the coil as shown in Figure 6, and activate

manual raise/lower switch. When the coil energizes it will hold the metal magnetically. If one

coil doesn’t energize, swap coils to determine whether it’s a bad coil or power problem.

Figure 13.5: Using screwdriver to test energizing of coils.

6. Clean solenoid valve. If coils energize and the cylinder doesn’t move, there must be

contamination in the solenoid cartidge. Remove and clean thoroughly with compressed air—be

careful not to damage or lose O-rings.

Additonal Tips…

If your system is equipped with lift hydraulics, you can swap coils or valves to verify the failed

part, before ordering a replacement.

If sampler shoe moves in reverse direction, disconnect solenoid wires (from external controller)

and reverse.

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Veris-technologies MSP3 - Operating Instructions Manuel d'utilisateur Page 108