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Watson-Marlow 620DuN and 620Du User Manual 17
Input line fusing: type T5A H 250V
20mm time-delayed cartridge fuse,
located in a fuseholder in the centre of
the switchplate at the rear of the pump.
Power interruption: This pump has
an auto-restart feature which, when
active, will restore the pump to the
operating state it was in when power
was lost. See 18.12 Auto-restart.
Stop / start power cycles: Do not
power up/power down for more than
100 starts per hour, whether manually
or by means of the auto-restart facility.
We recommend remote control where a
high number of starts is required.
11 Start-up check list
Note: See also 29.6, 29.7, 29.8 and 33.5, Tube loading.
Ensure that proper connections are achieved between the pump tube and
suction and discharge piping.
Ensure proper connection has been made to a suitable power supply.
Ensure that the recommendations in section 9 Good pump installation practice
are followed.
12 Switching the pump on
for the first time
Note: This manual uses bold type to highlight the active option in menu screens:
“English” in the first screen represented here. The active option appears on the
pump display in
inverse text.
Switch on the power supply at the rear of the pump. The pump runs a power-
on test to confirm proper functioning of the memory and hardware. If a fault is
found, an error message is displayed. See 26.1 Error codes.
The pump displays a language menu. Use the UP and DOWN keys to select
your language. Press the ENTER key to confirm your choice.
The information which follows assumes that your choice was English.
DuN, Du
DuN, Du