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1. General:
1.1 Scope
This operation manual is valid for the submersible waste water pumps ZFS 71 II 2G EEx d IIB T3
If the instructions of the operation manual – especially the safety instructions - are not observed, or in case
of unauthorized modifications of the plant or the installation of non-original spare parts, the guarantee ex-
pires automatically. The manufacturer assumes no liability for damages resulting from such behaviour!
Manufacturer: Zehnder Pumpen GmbH
Zwönitzer Straße 19
08344 Grünhain-Beierfeld
Manufactured sizes: ZFS 71.1 W Ex
ZFS 71.1 D Ex
ZFS 71.2 D Ex
ZFS 71.3 D Ex
ZFS 71.4 D Ex
Status of the operation manual: January 2013
Inspections/approvals:
BVS 05 ATEX E 028 X
1.2 Enquiries and orders:
In case of enquiries or orders, address yourself to your specialist retailer.
1.3 Technical data:
ZFS 71.1 W
Ex
ZFS 71.1 D
Ex
ZFS 71.2 D
Ex
ZFS 71.3 D
Ex
ZFS 71.4 D
Ex
Rated power
P
2
[KW]
1,6
1,7
1,7
3,2
3,2
Voltage U [V]
230
400
400
400
400
Frequency [Hz]
50
Rated current
Consumption I [A]
10,5
3,7
3,7
6,5
6,5
Drive n [min
-1
]
2800
Max. discharge flow
Q
max
[m³/h]
17
17
17
17
17
Max. delivery height
H
max
[m]
22
22
25
35
39
Max. media tempera-
ture t
max
[°C]
40
Pressure connection
(optional)
Flange DN 50
Weight with cable [kg]
38
38
38
44
44
Duty ratio ED
S1 – continuous operation (flooded), S3 - 40 % (emerged)
Minimum fluid level
Bottom line of motor housing
