Water Pump User Manual

Watson-Marlow 520DuN IP66/NEMA 4X User Manual 51
18.13 Set maximum speed
The 520DuN pump offers a maximum speed of 220 revolutions per minute. This limit
can be reduced for operational purposes.
 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 then 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 fourth screen of the Setup menu.
 Altering the maximum speed automatically re-scales the analogue speed con-
trol response.
Note: The maximum speed available depends on the pumphead selected during
calibration.
18.14 Backlight
The pump’s display can be illuminated or not according to choice.
 In the fourth screen of the Setup menu select Backlight using the UP and
DOWN keys. Press ENTER to confirm your choice.
 The pump displays a screen allowing the user to switch the display backlight on
or off. Use the UP and DOWN keys to choose On or Off and press ENTER to
confirm the decision.
 The pump returns the user to the fourth screen of the Setup menu. The display
is now illuminated or not according to the user’s decision.
Alternatively ...
 To turn the backlight off: press STOP and DOWN together.
 To turn the backlight on: press STOP and UP together.