Watson-Marlow 620U - Manual (Page 43)

Watson-Marlow 620UN, 620U, 620SN, 620S User Manual 43
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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.
Do not use auto-restart for more than 100 starts per
hour. We recommend remote control where a high
number of starts is required.
UN, U, SN, S
16.7 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 minumum allowed speed is at
least 1rpm less, or up to 265rpm; however, see 8.1 Pressure capability for use above
165rpm.
In the second 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 UP and DOWN
keys to set the maximum allowed speed and press ENTER to confirm the fig-
ure.
The pump returns the user to the second screen of the Setup menu, via a
warning screen requiring the user to press ENTER if he selected a speed
greater than 165rpm.
Note: Maximum allowed speed limits speed under manual or analogue control.