Danfoss PAH Series - Instruction Pump Instruction Pah; Paht 2-12.5

Instruction Pump instruction PAH / PAHT 2-12.5
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© Danfoss | DHS (im) | 2022.07
1180R9379 | AQ188686503004en-000801 | PAH 2-12.5
1. Identication
Table of Contents Contents
1. Identication ..........................................................................34
2. System design .........................................................................35
2.1 Closed-system design .................................................................35
2.2 Open-system design ...................................................................36
2.3 General guidelines for calculation of pressure losses ....................................37
2.4 General comments on..................................................................37
3. Building up the pump unit .............................................................38
3.1 Mounting ..............................................................................38
3.2 Direction of rotation ...................................................................38
3.3 Orientation ............................................................................38
3.4 Protection from too high pressures .....................................................39
3.5 Connections ...........................................................................39
4. Initial start-up..........................................................................40
5. Operation..............................................................................40
5.1 Water quality ..........................................................................40
5.2 Temperature ...........................................................................40
5.3 Pressure ...............................................................................40
5.4 Dry running............................................................................40
5.5 Disconnection .........................................................................40
5.6 Storage ................................................................................40
5.6.1 Water hydraulic systems, water recirculated.............................................40
5.6.2 Open-ended systems with water supply from tank. .....................................41
5.6.3 Open-ended systems with direct water supply. .........................................41
6. Service.................................................................................41
7. Recommended service intervals........................................................41
7.1 General information....................................................................41
7.2 Inspection of pump parts ..............................................................41
7.3 How to inspect the pump ..............................................................41