Terminal Box Positions; Electrical Installation; Electrical Connection - Grundfos MTA 30 Instrucciones De Instalación Y Funcionamiento

6.1.2 Terminal box positions

The terminal box of most of the MTA pump types
can be turned to another position after delivery.
See the table below.
Terminal box positions
Pump type
9 o'clock
(standard)
MTA 30
MTA 60
MTA 90
MTA 120
MTA 200
MTA 20H
MTA 40H
MTA 70H
MTA 100H
●
The terminal box can be turned to another
position after delivery.
( ● ) The terminal box cannot be turned to
another position after delivery.
Outlet
Standard
9 o'clock
Outlet
Fig. 3 Possible terminal box positions
(top view)
To turn the terminal box to another position, do
as follows:
1. Remove the bolts securing the motor to the
pump.
2. Turn the motor to the required position.
3. Refit and tighten the bolts securing the motor
to the pump.
Connect the electric motor to the power supply
as shown in the diagram in the terminal box
cover.
3 o'clock
● ●
● ●
● ●
( ● )
●
( ● )
●
● ●
● ●
● ●
( ● )
●
3 o'clock

6.2 Electrical installation

6.2.1 Electrical connection

Carry out the electrical connection according to
local regulations.
Check that the supply voltage and frequency
correspond to the values stated on the
nameplate.
Warning
Before making connections in the
pump terminal box, make sure the
power supply has been switched
off.
The operating voltage and frequency are
marked on the pump nameplate. Make sure that
the motor is suitable for the power supply
available.
The motor must be connected to a
motor-protective circuit breaker.
We do not recommend operation via frequency
converter.
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