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Watson-Marlow 620DuN and 620Du User Manual 44
Alternatively ...
Stop the pump. Turn off the mains power switch at the rear of the pump.
Hold down the START key and turn on the mains power switch. The ! symbol
shows on the display.
Start the pump. If the mains supply is interrupted the pump will automatically
restart when the mains power returns.
To remove auto-restart switch off the mains power at the rear of the pump.
Hold down the STOP key and turn the mains power switch on. The ! symbol
does not appear.
18.13 Set maximum allowed speed
The maximum allowed speed of the drive defaults to 165rpm. It is possible to set
this limit at any speed down to 1rpm as long as the minimum allowed speed is at
least 1rpm less, or up to 265rpm; however, see 8.1 Pressure capability for use above
165rpm.
In the fourth screen of the Setup menu select Set max speed using the UP
and DOWN keys. Press ENTER to confirm your choice.
The pump displays a screen allowing the user to set the maximum speed of the
pump equal to or lower than the maximum available. Use the numeric keys to
set the maximum allowed speed and press ENTER to confirm the figure.
The pump returns the user to the fourth screen of the Setup menu, via a warn-
ing screen requiring the user to press ENTER if he selected a speed greater
than 165rpm.
18.14 Set minimum allowed speed
The minimum allowed speed of the drive defaults to 0.1rpm. It is possible to set this
limit at any speed up to 264rpm, as long as the maximum speed is at least 1rpm
greater.
In the fourth screen of the Setup menu select Set min speed using the UP
Do not use auto-restart for more than 100 starts per
hour. We recommend remote control where a high
number of starts is required.