KRAL CG Series - Table of Contents

2 OIC 10en Edition 2019-11 Operating Instructions
Table of contents
KRAL Screw Pumps – CG Series
About this document
□ General information 3
□ Target groups 3
□ Symbols 3
□ Danger levels 4
□ Associated documents 4
Safety
□ Proper use 5
□ General safety instructions 5
□ Safety instructions for magnetic coupling
systems 5
Identification
□ Type code 6
□ Rating plate 7
Technical data
□ Operating limits 8
□ Sound pressure level 8
□ Required NPSH values 9
□ Weights 10
Function description
□ Structure 11
□ Magnetic coupling 12
□ Overflow valve 13
□ Heating system 14
▪ Electric heating system 14
▪ Fluid heating system 14
▪ Heating system special design 14
Transportation, storage and disposal
□ Safety instructions on transportation,
storage and disposal 15
□ Unpacking and checking the state of
delivery 15
□ Lifting the pump/pump unit 15
□ Storage 16
□ Preservation 16
▪ Preserving the internal surfaces
of the pump 17
▪ Preserving the external surfaces
of the pump 17
▪ Removing the preservation 17
□ Disposing of the pump 18
Installation, removal and connection
□ Safety instructions on installation, removal
and connection 19
□ Installation 19
▪ Installing the pump 19
▪ Protect the pump against soiling 20
▪ Connecting the pump to the pipe system 20
▪ Assembling the pump and motor 20
□ Connecting the motor 21
□ Removing the pump 21
Operation
□ Safety instructions on operation 22
□ Commissioning 22
▪ Cleaning the pipe system 22
▪ Filling the pump 23
▪ Checking the direction of rotation 24
▪ Commissioning the pump 25
□ During operation 26
▪ Checking the operating pressure 26
▪ Adjusting the overflow valve 26
▪ Switching off the pump 27
□ Taking the pump out of operation 27
□ Recommissioning the pump 27
Maintenance
□ Safety instructions on maintenance and
repairs 28
□ Required maintenance 28
▪ Ball bearing 28
▪ Magnetic coupling 28
□ Replacing the magnetic coupling 29
▪ Removing the magnetic coupling 29
▪ Installing the magnetic coupling 31
□ Replacing the ball bearing and screw set 35
▪ Removing the ball bearing and
screw set 35
▪ Installing the ball bearing and screw set 37
Troubleshooting
□ Information about faults 39
▪ Possible faults 39
▪ Troubleshooting 39
Spare parts
□ Cartridge pump 42
□ Pumpe with magnetic coupling 43
□ Overflow valve 44
Appendix
□ Tightening torques 45
□ Contents of the EC Declaration of
Conformity 46
□ Notes 47