5
2.2
Seal codes
Table 2: Material code shaft seal
2.3
Current
2.3.1
Nominal current
The nominal allowable current of the motor is stated
on the motor plate. This shows the nominal working
range of the motor and can be used to protect the
motor.
Measuring the actual current of the pump during
operation can be used to pre-set the motor protection
switch to protect the pump/motor combination.
This current value can also be used to determine the
proper electrical equipment such as variable
frequency drive, main switch, wiring diameter etc.
WARNING
Not only the motor, but also the pump
has to be protected in its application.
2.3.2
Motor protection
Standard single phase motors are delivered including
motor protection. The motor protection is provided
either by a thermal circuit breaker or by a motor
winding protection.
Please contact your supplier for more detailed
information about your motor protection.
2.4
Supplementary
documentation
Apart from this manual, the documentation given
below is also available:
Table 3: Supplementary documentation
Code acc. to EN 12756
Description
Material
Note
B
Spring loaded ring
Carbon graphite
Ca
Resin impregnated
V
Seat ring
Ceramic
Ce
Aluminium oxide
E
P
Elastomers
EPDM
NBR
EPDM
NBR
Ethylene propylene rubber
Nitrile butadiene rubber
F
Spring
CrNi steel
F
Other metal parts
CrNi steel
P
ro
tect
ion
device
variant
T
y
p
e
of
prot
ectio
n
S
u
it
able f
o
r am
bien
t
tem
p
eratu
re [°C
]
Loc
ated
in
Reset
1
Thermal
circuit breaker
20 - 30
Thermal
box
Manual
2
Winding
protection
-20 - 50
Motor
winding
Automatic
Document
Code
General terms of delivery
119 / 1998
DPHM(C) 2/4/6
Technical Data 50/60 Hz Version B
97004494
See also www.dp-pumps.com
