| 1. Disconnect a wire from the negative plug of the storage battery. |
| 2. Disconnect the socket from the electromagnetic valve. |
| 3. Measure resistance between contact of the 7th socket and "weight". Resistance: 4,1–5,1 Ohm
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| 4. If connection is absent, check an electric chain on break or short circuit or replace the valve of management with pressure. |
| 5. Connect the socket to the electromagnetic valve. |
| 6. Connect a wire to the negative plug of the storage battery. |