Allweiler NIT Series - Page 4

Table of contents
List of figures
Fig. 1 Type plate (example) ........................ 9
Fig. 2 ATEX plate (example) ........................ 9
Fig. 3 Pump type code (example) .................. 9
Fig. 4 Layout ......................................... 10
Fig. 5 Single mechanical se al with q uenching
(sketch) ....................................... 11
Fig. 6 Fastening the lifting gear to the pump
aggregate ..................................... 12
Fig. 7 Straight pipe lengths upstream
and downstream of the pump
(recommended) .............................. 15
Fig. 8 Widening the stub shaft ...................... 17
Fig. 9 Motor assembly .............................. 17
Fig. 10 Widening the stub shaft ...................... 25
Fig. 11 Widening the stub shaft ...................... 26
Fig. 12 Motor assembly .............................. 27
Fig. 13 U5A - Un balanced mechanical seal, with
safety stuffing box ............................ 33
Fig. 1 4 Fastening of the bearing housing cover and
fan casing ..................................... 34
Fig.15 Versionwithintermediatering(sizes40-250
and 50-250) ................................... 34
Fig. 16 Housing cover version (sizes 2/40-250 and
2/50-250) ..................................... 34
Fig. 17 Attachment of the guard sheet to the motor
bell housing ................................... 34
Fig. 18 Information plate (972.01), assignment of
connections ................................... 34
Fig. 19 Version with intermediate ring, sizes
40-250/01 and 50-250/01 .................... 34
Fig. 20 Two-stage sizes, non-cooled, unbala nced
mechanical seal U5A, with safety stuffing
box ............................................ 35
Fig. 21 Quenching seal housing ..................... 35
Fig. 22 Flange loads at the pump ................... 38
List of tables
Tab. 1 Target groups and their duties .............. 5
Tab. 2 Other applicable documents and their
purpose ....................................... 5
Tab. 3 Warnings and consequences of disre garding
them ........................................... 6
Tab. 4 Symbols and their meaning ................. 6
Tab. 5 Technical terms and their meaning ... .. .. .. 6
Tab. 6 Quenching - variants and characteris-
tics ............................................. 11
Tab. 7 Treatment for storage ........................ 12
Tab. 8 Measures to be taken if the pump is shut
down .......................................... 21
Tab. 9 Measures depending on the behavior of the
pumped medium ............................. 21
Tab. 10 Measures to be taken after prolonged
shutdown periods ............................ 22
Tab. 11 Measures for return .......................... 25
Tab. 12 Fault number assignment ................... 28
Tab. 13 Troubleshooting list .......................... 30
Tab. 14 Abbreviations of the connection
designations .................................. 31
Tab. 15 Designations of components according to
part numbers ................................. 32
Tab. 16 Assignment of the pump size to the stu b
shaft diameter ................................ 36
Tab. 17 Ambient conditions ........................... 36
Tab. 18 Operating parameters f or sealing m edium in
open flow system .. ... ... .. ... .. . .. ... .. ... ... 36
Tab. 19 Sound pressure levels ....................... 36
Tab. 20 Tightening torques ........................... 37
Tab. 21 Cleaning agents .............................. 37
Tab. 22 Maximum flange loads ....................... 38
Tab. 23 Spare parts for two years of continuous
operation ...................................... 39
Tab. 24 Declaration of harmlessness ............... 40
Tab. 25 Declaration of conformity according to EC
machine directives ........................... 41
4 NIT series BA-2017.03 en-US 160-282/0 – 550 154