26
Maintenance
7.5
Assembling the motor and coupling
Crown gear coupling
When performing installation work on the coupling, it is important to observe the instal-
lation instructions of the coupling manufacturer:
www.ktr.com/de/index/service/montageanleitung.htm
The shaft of the drive motor must be aligned with the pump shaft:
– Observe the permissible angular and radial displacements.
– Maintain clearance E so that the crown gear can still move axially.
Tighten the screws in the coupling half with the prescribed torque and secure the stud
bolt with Loctite 243.
Fig. 16: Assembling the crown gear coupling at pump with standard coupling
Magnetic coupling
The following safety instructions are only valid for the
disassembly
of the drive system
for vacuum pumps with
magnetic coupling
!
NOTICE
Damage to motor bearings
Blows or pressure when mounting the coupling half can damage the motor bearings.
Clean and lightly oil the shaft journals.
Push the coupling half onto the shaft. If necessary, warm the coupling half, or use the
internal thread in the shaft journal and suitable tools and push the coupling half in
place.
E: 116
+0,5
mm mm
T
A
: 17 Nm
T
E
A
DANGER
Strong magnetic field in the vicinity of the drive system!
Danger to life for persons with cardiac pacemakers when the drive system is disassem-
bled.
Persons with cardiac pacemakers must not enter the area (
≤
2m) of the magnetic
field.
Rooms in which open couplings are accessible must be identified: ’’ No trespassing
for persons with heart pacemaker’’!
Disassembled magnetic couplings must be kept away from computers, data storage
media and other electronic components.
