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Multitec
2
Contents
Page
1 General 4
2 Safety 4
2.1 Marking of instructions in the manual 4
2.2 Personnel qualification and training 4
2.3 Non-compliance with safety instructions 4
2.4 Safety awareness 4
2.5 Safety instructions for the operator / user 5
2.6 Safety instructions for maintenance,
inspection and installation work 5
2.7 Modification and manufacture of spare parts
by customer 5
2.8 Unauthorized modes of operation 5
3 Transport / Storage 5
3.1 Transport / Handling 5
3.2 Storage / Preservation 5
4 Description of the product and
accessories
6
4.1 Technical specification 6
4.2 Designation 6
4.3 Design details 6
4.4 Applications 6
5 Installation at site 7
5.1 Safety regulations / Special instructions 7
5.2 Foundation / Checks to be carried out prior to
installation 7
5.3 Installing the pump/unit 7
5.3.1 Aligning the pump / drive 8
5.4 Connecting the piping 9
5.4.1 Vacuum balance line 10
5.5 Connection to power supply 10
5.5.1 Connecting the motor 10
5.5.2 Setting the time relay 10
5.5.3 Checking the direction of rotation 10
6 Commissioning, start-up / shutdown 11
6.1 Commissioning 11
6.1.1 Lubricants 11
6.1.2 Priming the pump and checks to be carried
out
11
6.1.3 Contact guard 12
6.1.4 Connection to power supply 12
6.1.5 Start-up 12
6.1.6 Shutdown 12
6.1.7 Final check 12
6.2 Operating limits 12
6.2.1 Temperature of fluid pumped 12
6.2.2 Switching frequency 13
6.2.3 Minimum flows 13
6.2.4 Density of fluid pumped 13
6.3 Shutdown / storage / preservation 13
Page
6.3.1 The unit / pump remains installed; periodic
check of operation 13
6.3.2 The pump is removed from the pipe and
stored
13
6.4 Returning to service after storage 13
7 Servicing / maintenance 14
7.1 General instructions 14
7.2 Servicing / inspection 14
7.2.1 Supervision of operation 14
7.2.2 Bearings and lubrication 14
7.2.3 Shaft seal 15
7.2.4 Coupling 15
7.3 Dismantling 15
7.3.1 General instructions 15
7.3.2 Preparations for dismantling 15
7.3.3 Dismantling the bearings 16
7.3.4 Dismantling and replacement of shaft seals 18
7.3.5 Dismantling the mechanical seal 18
7.3.6 Dismantling the hydraulic system 20
7.3.7 Recommended spare parts stock for 2 years’
continuous operation 20
7.4 Reassembly 20
7.4.1 Tightening torques - Tie bolts (part No. 905) 21
7.4.2 Reassembly of hydraulic system 21
7.4.3 Shaft seals 21
7.4.4 Bearings 22
7.5 Re-adjusting the clearance gaps 25
7.5.1 Max. clearance gaps 25
7.5.2 Repairs 25
8 Trouble-shooting 26
9 General assembly drawings 27-29
9.1 List of components 30
Tightening of shaft nuts on Multitec pumps 23
Adjusting dimensions for coupling alignment,
pump sizes 32 to 65, versions E, Ex, F, Fx, V, Vx 31