DROPSA Flow master Manuale d'uso e manutenzione - Pagina 5

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If the machine is operated for the first time:

1. Decrease oil pumping unit pressure and ensure that all the connections are correct and there are no leaks.

Increase pressure progressively to suit individual flow requirements.

7. PUMP OPERATIONS

MANUAL OPTION

Output adjusting of the manual FLOWMASTER is easy: through the use of two needle valves the output adjustment can be

coarsely (par. 11.3, fig.1, pos. X) or finely adjusted (par. 11.3, fig.1, pos. Y).

To coarsely adjust:

1. Unlock the locknut of the needle valve.

2. Close the fine adjustment valve (par. 11.3, fig.1, pos. Y), by turning clockwise with a M3 allen spanner.

3. Increase or decrease the output by turning counterclockwise or clockwise, with a M5 allen spanner, the coarse

adjustment valve (par. 11.3, fig.1, pos. X).

It is advisable to make the fine adjustment only after the coarse adjustment, as follows:

Increase or decrease the output by turning counterclockwise or clockwise, with a M3 allen spanner, the fine adjustment

valve (par. 11.3, fig.1, pos. Y) to suit individual flow requirements.

The fine adjustment valve (par. 11.3, fig.1, pos. Y) only is used for the size "A" module.

7.1 MOTORIZED OPTION

To adjust motorized FLOWMASTER output:

Close the fine adjustment valve (par. 11.3, fig.1, pos. Y) and let the electronic control equipment start automatically in line

with the setting data.

8. TROUBLESHOOTING

The following diagnostic table indicates the main anomalies, which may be encountered, the probable causes and possible

solutions.

If you cannot solve the problem, do not attempt to disassemble parts of the machine but contact the Engineering Department of

DROPSA S.p.A., pointing out anomaly details.

ANOMALY

No signal transmitted by

the flow meter

Blocked satellite

Abnormal satellite

rotation

Oil leakage

9. MAINTENANCE PROCEDURE

FLOW MASTER has been designed and constructed to require a minimum of maintenance.

For an easy maintenance, it is advised to assemble the machine in an adequate location.

To facilitate maintenance tasks without interrupting the operation of the machine, it is recommended to provide the flow

meter with an input ball valve to disconnect parts of the system.

Periodically check pipe-joints to detect possible leaks.

Always keep the machine unit clear to readily detect possible leaks.

Periodically (once a year or when required) replace the refilling filter, part n°: 3130139.

PROBABLE CAUSE

Wrong electrical connection

Impure oil in the circuit

Cold oil in the circuit

Low pressure

Worn O-ring seals

SOLUTION

→

Check sensors (and motor, for the motorized

option) electrical connections on the control

equipment terminal strips

→

Check and clean the oil output circuit filtering

cartridges. Replace them, if necessary

→

Act on the pumping system electrical resistance

→

Increase pressure

→

Replace the seals.

(see machine parts drawing, par. 11.3)