Watson-Marlow 620U - Manual (Page 19)

Watson-Marlow 620UN, 620U, 620SN, 620S User Manual 19
UN, U, SN, S
UN, SN The voltage selector switch is not visible while the
620N module is in place. Do not switch the pump on
unless you have checked that it is set to suit your
power supply by removing the module and inspecting
the switch, and then refitting the module. See 20.1 620N
module removal and replacement.
If the mains power cable is inappropriate for your installation, it can be changed.
Please contact your local Watson-Marlow Bredel service centre.
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
16.6 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 26.6 and 26.7 Tube loading.
Ensure that proper connections are achieved between the pump tube and suc-
tion 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.
UN, U, SN, S