Terminal Box Positions; Base Plate; Frost Protection; Electrical Connection - Grundfos TP Serie Instrucciones De Instalación Y Funcionamiento

Fig. 11 Foundation for TP(D) Series 300 pumps
Concrete foundation dimensions
Pump Y
weight (height)
[kg] [mm]
150 280
200 310
250 330
300 360
350 375
400 390
450 410
500 420
550 440
600 450
650 460
700 470
750 480
800 490
850 500
900 510
950 520
1000 530
1050 540
1100 550
1150 560
1200 560
1250 570
1300 580
1350 590
1400 600
1450 600
1500 610
1550 620
1600 620
1650 630
1700 635
14
Z X
(length) (width)
[mm] [mm]
565 565
620 620
670 670
710 710
750 750
780 780
810 810
840 840
870 870
900 900
920 920
940 940
970 970
990 990
1010 1010
1030 1030
1050 1050
1060 1060
1080 1080
1100 1100
1100 1100
1130 1130
1150 1150
1160 1160
1180 1180
1190 1190
1200 1200
1220 1220
1230 1230
1250 1250
1250 1250
1270 1270

5.4 Terminal box positions

Warning
Before starting work on the pump,
make sure that the electricity supply
has been switched off and that it cannot
be accidentally switched on.
The terminal box can be turned to any of four
positions, in 90 ° steps.
Change the terminal box position as follows:
1. If necessary, remove the coupling guards using a
screwdriver. Do not remove the coupling.
2. Remove the screws securing the motor to the
pump.
3. Turn the motor to the required position.
4. Replace and tighten the screws.
5. Replace the coupling guards.

5.5 Base plate

Single-head pumps (except TP 25-50, 25-90, 32-50,
32-90, 40-50 and 40-90) have two tapped holes in
the bottom of the pump housing which can be used
for fitting a Grundfos base plate to the pump.
The base plate is available as an optional extra.
Twin-head pumps have four tapped holes in the
bottom of the pump housing. For some twin-head
pumps, a base plate consisting of two halves is
available.
Base plates with dimensions are shown on
page 270.

5.6 Frost protection

Pumps which are not being used during periods of
frost should be drained to avoid damage.

6. Electrical connection

The electrical connection should be carried out in
accordance with local regulations.
Warning
Before removing the terminal box cover
and before any removal/dismantling of
the pump, make sure that the electricity
supply has been switched off.
The pump must be connected to an
external mains switch with a minimum
contact gap of 3 mm in all poles.
The operating voltage and frequency are marked on
the pump nameplate. Make sure that the motor is
suitable for the electricity supply on which it will be
used.
Single-phase standard motors incorporate a thermal
switch and require no additional motor protection.
Three-phase motors must be connected to a motor
starter.
Motors of 3 kW and up incorporate thermistors
(PTC). The thermistors are designed according to
DIN 44082.
The electrical connection should be carried out as
shown in the diagram inside the terminal box cover.