
Standard/
Optional
Material code
Material cas-
ing/impeller
Standard
CB
Cast iron /
Bronze
Standard
CS
Cast iron / Fab-
ricated Stain-
less steel
Standard
CN
Cast Iron /
Stainless steel
Standard
DC
Ductil iron /
Cast iron
Standard
DB
Ductil iron /
Bronze
Standard
DN
Ductil iron /
Stainless steel
Standard
NN
Stainless steel /
Stainless steel
Optional
RR
Duplex / Duplex
3.6 Mechanical seal
Unbalanced single mechanical seal acc. EN 12756,
version K Dimensions.
3.7 Application limits
Maximum working pressure
This flow chart shows the maximum working pres-
sure depending on the pump model and the temper-
ature of the pumped liquid.
p [bar]
0
5
10
15
20
EP
D
M
FK
M
CC, CB, CN, CR
-40
-20
0
20
40
60
80
100
120
140
160
t [
°
C]
EP
D
M
, FK
M
FK
M
(
ho
t w
a
te
r)
EP
D
M
BQ
1
EGG-WA
Q
1
Q
1
EGG
BQ
1
VGG
Q
1
Q
1
VGG
U
3
AVGG
U
3
AEGG
P
1max
+ P
max
≤ PN
P
1max
Maximum inlet pressure
P
max
Maximum pressure generated by the pump
PN
Maximum operating pressure
Liquid temperature intervals
Version
Gasket
Minimum
Maximum
Standard
EPDM
-25°C
(-13°F)
140°C
(284°F)
Optional
FPM (FKM) -20°C
(-4°F)
90°C
(194°F)
For special requirements, contact the Sales and
Service Department.
Maximum number of starts per hour
This table shows the number of starts allowed per
hour for motors supplied by Lowara:
kW
0.25
-
3.00
4.00
-
7.50
11 -
15
18.5 -
22
30 -
37
45 –
75
90 -
160
Starts
per
hour
60
40
30
24
16
8
4
NOTICE:
If you use a different motor from the standard one
supplied with the electric-pump, check the relevant
instructions to find out the permitted number of starts
per hour.
Noise level
For the measured surface sound pressure levels of
pump alone and pump equipped with standard sup-
plied motor, see
4 Installation
Precautions
WARNING:
• Observe accident prevention regula-
tions in force.
• Use suitable equipment and protec-
tion.
• Always refer to the local and/or na-
tional regulations, legislation, and co-
des in force regarding the selection of
the installation site, plumbing, and
power connections.
Electrical Hazard:
• Make sure that all connections are
performed by qualified installation
technicians and in compliance with
the regulations in force.
• Before starting work on the unit,
make sure that the unit and the con-
trol panel are isolated from the power
supply and cannot be energized. This
applies to the control circuit as well.
Grounding (earthing)
Electrical Hazard:
• Always connect the external protec-
tion conductor to ground (earth) ter-
minal before making other electrical
connections.
• You must ground (earth) all electrical
equipment. This applies to the pump
equipment, the driver, and any moni-
toring equipment. Test the ground
(earth) lead to verify that it is connect-
ed correctly.
• If the motor cable is jerked loose by
mistake, the ground (earth) conductor
should be the last conductor to come
loose from its terminal. Make sure
that the ground (earth) conductor is
longer than the phase conductors.
en - Original instructions
18