ATI Technologies 39-0080 Manuale di servizio - Pagina 10

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Innovation In and Out of Parlour

Milk Meter Fault Finding Scheme

ACR Faults

Symptom

ACR ram does not raise/lower cluster

No vacuum/vacuum always on at clawpiece

Premature ACR operation

Cluster removed at end of milking too

soon or too late

10 | Milk Meter Service Manual | v1.2

Possible Cause

PCB output fault

Solenoid valve fault

Wiring connection fault

Water in connection box

PCB output fault

Solenoid valve fault

Wiring connection fault

Shut-off valve always closed

Milk tube disconnected

Milk tube or milk meter blockage

ACR setting incorrect

See 'Meter Not Metering' section

ACR setting incorrect

Vacuum delay setting incorrect

Solution

Check bottom LED on control unit.

Change control unit lid

Check solenoid.

Check vacuum supply.

Check wiring in connection box.

Check wiring in solenoid box.

Check cable glands and lid seal.

Check internal connectors for water damage.

Change connectors.

Check top LED on control unit.

If light on vacuum should be on.

If light off vacuum should be off.

If faulty, change control lid.

Check solenoid.

Check vacuum supply.

Check wiring in connection box.

Check wiring in solenoid box.

Check shut-off valve

Reconnect milk tube

Clear blockage

Check ACR setting

Check vacuum delay setting