Wilo TOP-S Instrucciones De Instalación Y Funcionamiento página 44

English
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 stage 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 stage, a cable can be connected as
shown in the circuit diagram fig. 7b. 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. 7b.
For 1~ and 3~ pumps with terminal box type 5, 6, 7 (fig. 4):
The switching plug 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 switching plug (fig. 4, item 3) only with the pump switched off, then replace
it so that the symbol for the desired speed stage in the terminal box is indicated
by the respective marking of the switching plug.
When the terminal box cover is closed, the speed stage setting can be viewed
through the viewing window.
NOTE! If on a double pump both the individual pumps are in operation at the
same time, the selected speeds must be identical for both pumps.
8.3 Decommissioning
The pump must be decommissioned before conducting maintenance, repair or
dismantling work.
DANGER! Risk of fatal injury!
Deadly electric shock may occur when working on electrical equipment.
• Have work on the electrical part of the pump carried out only by a qualified
electrician as a basic principle.
• Before starting any maintenance and repair work, disconnect the pump from
the power supply, and make sure it cannot be switched back on by unauthor-
ised persons.
WARNING! Risk of burns!
Depending on the operating status of the pump or unit (fluid temperature),
the entire pump can become very hot. Touching the pump can cause burns.
Allow the system and pump to cool down to room temperature.
40 WILO SE 08/2020