Grundfos VersaFlo UPS, Installation And Operating Instructions Manual

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10
NOTE: When changing to and from speed 1, the
cover of the speed switch module must be removed
and fitted on the other side of the switch.
4. Fit the terminal box cover back onto the terminal
box and tighten the four screws in the cover.
5. Switch on the electrical supply.
Check that the green indicator light is perma-
nently on or flashing.
NOTE: The speed switch module must never be
used as an on/off switch.
4.3.2 Two-speed pumps, 3 x 460 V and 575 V
The speed setting in the terminal box can be
changed to two positions. The speed in the two posi-
tions appears in the table below (also see fig. 13 on
page 9).
Change the pump performance as follows:
The speed is changed by the position of the jumpers
in the terminals. The jumpers are fitted according to:
• figure 15 for speed 1 - low speed
• figure 16 for speed 2 - high speed.
Fig. 15 Speed 1 (low speed)
Fig. 16 Speed 2 (high speed)
Fig. 17 Terminal box
Speed step Speed in % of maximum speed
1 approx. 75%
2 100%
WARNING!
Never make any connections in the pump
terminal box unless the electrical supply
has been switched off.
T
M
03
77
34
48
06
TM
0
3
7
733
4
806
L3 L1 L2
P1
P2
T5 T4 T6
T3 T2 T1
Jumper wire
L3
L1
L2
P1
P2 T5
T4 T6
T3 T2 T1
Jumper wire
TM
03
77
39
48
06
L1 L2 L3 P1 P2
T6 T4 T5 T1 T2 T3