English
46
WILO SE 05/2011
For 1~ pumps with terminal box type 1, 3 (Fig. 4):
Undo the terminal box cover screws, then remove the terminal box cover,
switch the 3-step rotary switch within the box (Fig. 4, item 3) to the symbol for
the desired speed step, then correctly refit the terminal box cover.
When the terminal box cover is closed, the speed step setting can be viewed
through the viewing window.
For 1~ pumps with terminal box type 2, 4 (Fig. 4):
• Speed change-over in the terminal box:
• Undo the terminal box cover screws, then remove the terminal box cover,
select the desired speed step for the terminal box type 2/4 by changing over
the cable jumpers, then correctly refit the terminal box cover.
• External speed change-over outside the terminal box (pump with cable version):
• For an external change-over of the speed steps, a cable can be connected as
shown in the circuit diagram Fig. 8h. Undo the terminal box cover screws then
remove the terminal box cover, remove the cable jumpers, feed in the cable
through the PG cable gland and connect it, then correctly refit the terminal
box cover. The cable end should be connected to an external 3-step switch.
NOTE: If the cable jumpers are not connected or incorrectly connected, the
pump will not start. Make the connections for terminal box type 2/4 and circuit
diagram Fig. 8h.
For 1~ and 3~ pumps with terminal box type 5, 6, 7 (Fig. 4):
The change-over switch in the terminal box can be set to one of a maximum of
two or three steps (depending on the terminal box type).
Undo the terminal box cover screws then remove the terminal box cover, pull off
the change-over switch (Fig. 4, item 3) only with the pump switched off, then
replace it so that the symbol for the desired speed step in the terminal box is
indicated by the respective marking of the change-over plug.
When the terminal box cover is closed, the speed step setting can be viewed
through the viewing window.
NOTE: If on a twin-head pump both the individual pumps are in operation at the
same time, the selected speeds must be identical for both pumps.
