Shaft Sealing - Xylem LOWARA LR Series Installation, Operation And Maintenance Instructions

Installation, Operating and Maintenance Instruction

3.3 Shaft Sealing

3.3.1 Structure of the mechanical seal
This shaft seal is a single mech. seal with installation
dimensions according to EN 12756 (DIN 24960)
design "K". API plan 02 / ISO plan 00.
No additional flushing of the seal chamber is
necessary. The seal casing where the mechanical
seal is located must always be filled with liquid.
LMR, LMZ
Index of parts:
3 Impeller
18/G Casing cover
24 Shaft
412 Elbow sleeve
447 Spring
472 Rotating seal ring
474 Disc
475 Stationary seal ring
483 Bag
484.1 Elbow ring
487 Towing
DR Orifice
Pump size LMR, LMZ
LMR 125-160, LMR 125-200
LMR 125-250, LMR 125-315
LMR 150-250,
LMZ 125-160, LMZ 125-200
LMZ 125-250, LMZ 150-250
LMR 150-200, LMZ 150-200 50
Pump size LR, LRZ
LR 40-125, LR 40-160
LR 40-200, LR 40-250
LR 50-125, LR 50-160
LR 50-200, LR 65-125
LR 65-160, LR 65-200
LR 80-125, LR 80-160
LRZ 40-125, LRZ 40-160
LRZ 40-200, LRZ 40-250
d d d l
1 7 L 1k
40 58 32 45
70 42 47,5
d d d l
1 7 L 1k
22 37 18 37,5
Model LR, LMR, LRZ, LMZ
For a description of materials and operational ranges
of the mech. seals supplied, please refer to the data
sheet in the Operation Instructions and order
confirmation.
For the internal structure of the mechanical seal see
the following sectional drawings.
Index of parts:
1 Impeller
18/G Casing cover
24 Shaft
GD1 Spring with towing effect
GD2 O-ring (Shaft)
GD3 Rotating seal ring socket
GD4 O-ring (Rotating seal ring)
GD5 Rotating seal ring
GD6 Stationary seal ring
GD7 O-ring (Stationary seal ring)
Pump size LMR, LMZ
LRZ 40-200, LRZ 40-250
LRZ 50-125, LRZ 50-160
LRZ 50-200, LRZ 65-125
LRZ 65-160, LRZ 65-200
LRZ 80-125, LRZ 80-160
LR 50-250, LR 65-250
LR 80-200, LR 80-250
LR 100-160, LR 100-200
LRZ 50-250, LRZ 65-250
LRZ 80-200, LRZ 80-250
LRZ 100-160, LRZ 100-200
LR 100-250
LRZ 100-250
The mentioned dimensions refer to mechanical seals acc. EN
12756 with length l
1k
leaflet is subject to alteration without notice !
page 42
LR, LRZ
d d d
1 7 L
22 37 18 37,5
28 43 24 42,5
33 48 29 42,5
. Dimensions in mm without obligation! - This
l
1k