5.8 Installing the coupling
E
1
2
3
4
Fig. 12:
Installing the coupling
1 Coupling hub (pump side)
3
Coupling hub (motor side)
2 Coupling gear ring
4
Radial screw
Installing the coupling
1. Mount the motor side coupling hub on the motor shaft.
2. Set the coupling connection to the value "E" in axial direction.
– Coupling size ROTEX 38: Value "E" = 24 mm
– Coupling size ROTEX 42: Value "E" = 26 mm
– Coupling size ROTEX 48: Value "E" = 28 mm
3. Tighten the radial screw.
– Tightening torque:
10 Nm
4. Mount the motor onto the screw pump using the coupling gear ring.
5.9 Filling the cooling liquid
The screw pump is filled with cooling liquid ex factory.
NOTICE
Property damage as a result of inadequate cooling
Inadequate cooling may cause damage to the vacuum pump.
► Only use the cooling liquid prescribed by Pfeiffer Vacuum (Zitrec M 25).
► Evacuate the cooling chambers following repairs and fill cooling liquid.
Cooling liquid is only required if a heat exchanger is installed
Fill with cooling liquid for screw pumps with a heat exchanger.
Required consumables
● Cooling liquid (Zitrec M 25), see Technical Data for quantity
Required tool
● Allen key,
WAF 10
Required aids
● Funnel (optional)
Installation
27/70
