Grundfos ATEX Serie Instructions page 8

Installation sketch for the electrical servomotor
Observe the installation and operating instructions
Note
for the dosing pump.
Fig. 2 Installing the servomotor
Fig. 3 Coupling
Item Description
1 Pump
2 Adjusting spindle (grooved dowel)
3 Coupling
4 Lantern
5 Screw
6 Nut and intermediate disk
7 Scale ring
8 Grub screw
9 Servomotor
10 Console
11 Holding plate
12 Screw
Fitting the servomotor and lantern to the pump
1. Place the pump (1) on the console (10) and fix the screws (12)
without fastening them.
2. Fit the coupling section (3a) onto the adjusting spindle (2).
3. Fit the lantern (4) using four screws (5).
8
4. Insert the scale ring (7) and coupling section (3b) (carrier)
through the side of the lantern. Push one coupling section (3b)
onto the other coupling section (3a) so it is in the correct
position (see fig. 3) and hold it in place with one hand.
Caution
The spindle must not rotate during this process.
5. Turn coupling section (3c) on the shaft so that it engages in
the groove on coupling section (3b).
6. Fit coupling section (3e) onto coupling section (3c) and tighten
slightly with the grub screw (3d).
7. Screw the holding plate (11) onto the console to place it tightly
at the lantern.
8. Screw the servomotor (9) to the lantern and holding plate with
the screws (6).
9. Tighten the grub screw (3d).
10. Match up the 0 % position of the scale ring (7) with the
marking pin on the lantern and tighten the grub screw (8).
11. Tighten the screws (12) at the pump to fasten the pump to the
console.
Connecting and commissioning the servomotor
Establish the electrical connections according to the servomotor
manufacturer's instructions, see also section
connections.
Commission the pump and servomotor, observing the information
contained in the instruction manual; see also section
7. Commissioning.
6.4 Electrical