Danfoss APP series

44 | 180R9346 | AQ240486503020en-001702 © Danfoss | 2023.03
Operation guide Installation, Operation and Maintenance APP 53-92 pumps
Table of Contents
1. Identication
Table of Contents
1. Identication ......................................................................... 44
2. System design .........................................................................45
2.1 Open-ended systems with direct water supply..........................................45
2.2 Preferred RO system design without ERD .................................................45
2.3 Preferred RO system design with ERD...................................................46
2.4 Preferred RO system design with pumps and ERDs in parallel............................46
2.5 Reversible pumps ......................................................................46
3. Building up the pump unit with BoWex coupling........................................46
3.1 Assembly of the coupling ..............................................................46
3.2 Alignment between the motor and pump shaft.........................................46
3.3 Overall assembly with coupling BoWex-ELASTIC®, type HEW compact ...................47
3.3.1 Mounting..............................................................................48
3.4 Direction of rotation ...................................................................49
3.5 Orientation ............................................................................49
3.6 Protection from too high pressures .....................................................49
4. Building up the pump unit with jaw coupling ...........................................49
4.1 Mounting..............................................................................49
4.2 Connections ...........................................................................50
5. Initial start-up..........................................................................51
6. Operation..............................................................................52
6.1 Temperature ...........................................................................52
6.2 Pressure ...............................................................................52
6.3 Dry running............................................................................52
6.4 Disconnection .........................................................................52
6.5 Storage ................................................................................53
7. Service and warranty...................................................................53
PUMP
Type APP 78
Code no. 180BXXXX
Serial no. XXXXXX08-XXX
MADE IN DENMARK
Danfoss A/S, 6430 Nordborg, Denmark