Allweiler NIT Series - Page 35

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Appendix

Fig. 20 Two-stage si z es, no n-cooled, unbalanced mechanical seal U5A, with safety stufﬁng box

Fig. 21 Quenching seal housing

160-282/0 – 550 154 BA-2017.03 en-US NIT series 35

Main Page

Table of Contents2
About this Document5
Target Groups5
Other Applicable Documents5
Target Groups and Their Duties5
Other Applicable Documents and Their Purpose5
Warnings and Symbols6
Technical Terms6
Warnings and Consequences of Disregarding Them6
Symbols and Their Meaning6
Technical Terms and Their Meaning6
Safety7
Intended Use7
General Safety Instructions7
Product Safety7
Obligations of the Operating Company8
Obligations of Personnel8
Specific Hazards8
Explosion Hazard Area8
Hazardous Pumped Media8
Layout and Function9
Labels9
Type Plate9
ATEX Plate9
Pump Type Code9
Layout10
Shaft Seals11
Mechanical Seals11
Auxiliary Systems11
Sealing Systems11
Safety Stuffing Box11
Tics11
Transport, Storage and Disposal12
Transport12
Unpacking and Inspection on Delivery12
Lifting12
Preservation12
Storage12
Aggregate12
Treatment for Storage12
Removing the Preservative13
Disposal13
Setup and Connection14
Preparing the Setup14
Checking the Ambient Conditions14
Preparing the Installation Site14
Removing the Preservative14
Installing the Heat Insulation (Optional)14
Planning the Pipes15
Specifying Supports and Flange Connections15
Specifying Nominal Diameters15
Specifying Pipe Lengths15
Optimizing Cross-Section and Direction Changes15
Discharging Leaks15
Providing Safety and Control Devices (Recommended)15
Installing in the Pipe16
Keeping the Piping Clean16
Install Pump Aggregate16
Installing Auxiliary Pipes (if Available)16
Installing the Motor17
Electrical Connection18
Connecting the Motor18
Checking the Direction of Rotation18
Installing the Coupling Guard18
Performing the Hydrostatic Test18
Operation19
Preparations for the Initial Start-Up19
Identifying the Pump Type19
Removing the Preservative19
Preparing Auxiliary Systems (if Available)19
Filling and Bleeding19
Checking the Direction of Rotation20
Start-Up20
Switching on20
Switching off21
Shutting down21
Measures to be Taken if the Pump Is Shut down21
Measures Depending on the Behavior of the Pumped Medium21
Start-Up Following a Shutdown Period22
Operating the Stand-By Pump22
Measures to be Taken after Prolonged Shutdown Periods22
Maintenance23
Inspections23
Antifriction Bearing23
Mechanical Seals23
Sealing Medium24
Cleaning the Pump24
Dismounting24
Returning the Pump to the Manufacturer25
Preparations for Dismounting25
Removal of the Flanged Motor25
Measures for Return25
Installing26
Installation of the Pump26
Installation of the Flanged Motor26
Ordering Spare Parts27
Troubleshooting28
Fault Number Assignment28
Troubleshooting List30
Appendix31
Sectional Drawings31
Auxiliary Connections31
Part Numbers and Designations31
Tab31
Abbreviations of the Connection Designations31
Designations of Components According to Part Numbers32
Sectional Drawings33
Fan Casing34
And 50-250)34
Connections34
40-250/01 and 50-250/0134
Technical Specifications36
Stub Shaft Diameter at the Shaft Seal36
Ambient Conditions36
Parameters for Auxiliary Systems36
Sound Pressure Levels36
Tab36
Assignment of the Pump Size to the Stub36
Shaft Diameter36
Operating Parameters for Sealing Medium in36
Open Flow System36
Tightening Torques37
Tab37
Cleaning Agents37
Maximum Flange Loads38
Tab39
Spare Parts for Two Years of Continuous Operation39
Declaration of Harmlessness40
Declaration of Conformity According to EC Machine Directives41

Allweiler NIT Series - Page 35

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