Operation - Bell Upr 252 Gebrauchs- Und Wartungsanleitung

6 - OPERATION

THE USE OF THE PUMP IN POTENTIALLY EXPLOSIVE ENVIRONMENTS, IF NOT DULY PROTECTED (PROTEC-
TION NOT SUPPLIED) IS STRICTLY FORBIDDEN. POSSIBLE ACCUMULATION OF ELECTROSTATIC CHARGES.
The pump is extremely simple to use:
● To activate the pump press the "PUMP" push-button on the remote drive (fi g.6, page 3). The pump will start to deliver pressurized
oil and thereby cause the connected machine to operate.
● When the push-button is released, the pump stops but the pressure is maintained on the oil side so that the connected machine
cylinder holds the load in the position it has reached.
● To return the pressure to zero and hence retract the machine cylinder to its starting position, press the "RELEASE" push-button on
the remote drive (fi g.7, page 3).
WARNING
IMMEDIATELY AFTER THE PUMP INSTALLATION, THE CIRCUIT MAY CONTAIN AIR LOCKS WHICH PRE-
VENT PRESSURIZATION. IF THE PUMP IS UNABLE TO PRESSURIZE THE OIL CIRCUIT, PROCEED AS
DESCRIBED BELOW.
● Press the "PUMP" and the "RELEASE" push-button at the same time for about 15 seconds.
The pump should now work correctly. If you still have problems, repeat the above mentioned procedure.
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