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PAH 50
Danfoss PAH 50 User Manual
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T
r
ouble shooting
Closed water systems
The sy
stem
does not work
.
Is there sucient water
in the tank?
No
Ye
s
No
No
No
Ye
s
Ye
s
Ye
s
Ye
s
.
Is the water in the tank
very hot? Ie above 50
o
.
Is the power supply ok?
.
Are control lights on?
.
Is the lter clogged?
.
Is the lter control
light on?
.
Replace lter element
Contact ser
viceman
Stamp
.
Fill wat
er into the system
.
T
race leakage, if any
.
A blown fuse/or short
circuit?
.
Check power supply
and fuses and contact
electrician
.
At temperatures
higher than 50
o
the
pump drive cuts out.
Consequently the
cooler must be
checked/cleaned
.
Is the electric motor of
the pump unit rotating?
No
78
180R9379 | AQ188686503004en-000801 | P
AH 2-12.5 } 07.2022
77
79
Table of Contents
Operation Guide | Installation, Operation and Maintenance Manual for Pah 2-12.5 Pumps
3
Table of Contents
3
Shut down of the System
13
Maintenance and Service of the Pump Unit
13
Service and Inspection Interval for the Pump
13
General Safety Information
13
Disassembling and Assembling the Pump Unit
14
Assembling the Pump Unit
14
Procedure for Mounting the Pump Back Onto Electric Motor
14
Getting the Pump Unit Back into Operation
14
Storage of the Pump
14
Electrical Failure
15
Scrapping Criteria
15
Responsibility
15
Operational Conditions Which Can Cause Pump Failures
15
Mechanical Failure
15
General Safety Information
15
Troubleshooting and Scrapping Criteria
15
Appendices
17
Data Sheet PAH 2- 12 .5 (Ai073186502976En-001801)
19
Data Sheet Pah 2/4/6.3, Pah 10/12.5, Pah 20/25/32 and Pah 50/63/70/80/100 Pumps
20
Application Examples
21
Benefits
21
Pah 2-12 .5
22
Technical Data
22
Flow
23
PAH 2-6.3 Typical Flow Curves at Max Pressure
23
PAH 10-12.5 Typical Flow Curves at Max Pressure
24
Motor Requirements
25
Filtration
26
Installation
26
Noise
26
Open-System Design
27
Closed-System Design
28
Dimensions and Connections
29
Pah 2-6 .3
29
Pah 10-12 .5
30
Service
31
Pump Instruction PAH/PAHT/PAHT G 2-12 .5 (1An103586502885En-000501)
33
Instruction Pump Instruction Pah / Paht 2-12.5
34
Closed-System Design
35
System Design
35
Open-System Design
36
General Comments on
37
General Guidelines for Calculation of Pressure Losses
37
Building up the Pump Unit
38
Direction of Rotation
38
Mounting
38
Orientation
38
Connections
39
Protection from too High Pressures
39
Disconnection
40
Dry Running
40
Initial Start
40
Operation
40
Pressure
40
Storage
40
Temperature
40
Water Hydraulic Systems, Water Recirculated
40
Water Quality
40
General Information
41
How to Inspect the Pump
41
Inspection of Pump Parts
41
Open-Ended Systems with Direct Water Supply
41
Open-Ended Systems with Water Supply from Tank
41
Recommended Service Intervals
41
Service
41
Electric Motor Manual (180R9230)
43
Parts List PAH 2-12 .5 (Ax322447719905En-000401)
49
Parts List Pahc 2-6 .3 Pumps
50
General
51
Spare Parts List for PAH 2
52
Exploded View for PAH 2
53
Spare Parts List for PAH 4-6 .3
54
Exploded View for PAH 4-6 .3
55
Spare Parts List for PAH 10-12 .5
56
Exploded View for PAH 10-12 .5
57
Trouble Shooting Guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F Pumps
59
Guideline Trouble Shooting Guide for Pah, Paht, Paht C , Paht G Pumps
60
Trouble Shooting Fish Bone Chart
61
No Flow/No Pressure
62
Reduced Flow/Reduced Pressure
63
High Torque on Electric Motor
64
Noise from Pump
65
Noise from Installation
66
Typical Signs of Wear
67
Valve Plate
67
Port Plate
68
Swash Plate
68
Right and Wrong - Trouble Shooting Guide for Water Hydraulic Systems (180R9042)
73
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Danfoss PAH 50 Specifications
General
Brand
Danfoss
Model
PAH 50
Category
Water Pump
Language
English
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