Danfoss APP series

180R9346 | AQ240486503020en-001702 | 81© Danfoss | 2023.03
Operation guide Installation, Operation and Maintenance APP 53-92 pumps
BoWex-ELASTIC
®
Operating/Assembly instructions
Type HEW, HEW Compact and HEW-ZS
KTR-N
Sheet:
Edition:
40114 EN
21
of 22
7
Please observe protection
note ISO 16016.
Drawn:
2017-04-24 Shg/Hk
Replacing:
KTR-N dated 2013-06-10
Verified:
2017-04-24 Shg
Replaced by:
Illustration 17: Elastomer part in new condition
Illustration 18: Wear of elastomer part
Table 15:
Size
Limits of wear each hub
Size
Limits of wear each hub
Wear
X
max.
[mm]
Torsional back-
lash S
max.
[mm]
Wear
X
max.
[mm]
Torsional back-
lash S
max.
[mm]
42
1.0
1.7
100
1.8
3.1
48
1.0
1.8
125
2.0
3.5
65
1.4
2.5
G 125
2.0
3.5
80
1.6
2.7
150
2.0
3.5
G 80
1.6
2.7
The ATEX marking of the BoWex-ELASTIC
®
coupling is done on the polyamide flange of the elastomer specifying
the following details:
Short labelling:
(standard)
II 2GD c IIB T X
Complete labelling:
II 2G c IIB T6, T5 resp. T4
- 30 °C  T
a
 + 50 °C, + 65 °C resp. + 80 °C
II 2D c T 115 °C - 30 °C  T
a
 + 80 °C
The labelling with explosion group llB includes the explosion group llA.
!
The customer bears the sole responsibility for all machining processes performed subse-
quently on unbored or pilot bored as well as finish machined coupling components and
spare parts. KTR does not assume any warranty claims resulting from insufficient rema-
chining.
9 Enclosure A
Advice and instructions regarding the use in potentially explosive atmospheres
9.4 Standard values of wear
9.5 marking of coupling for potentially explosive atmospheres