DP DPHM, Инструкция по установке и эксплуатации

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10
5.5 Measuring, draining and
venting
The pump is provided with plugs for measuring,
draining and venting.
Connection (E) is meant to fill and vent the pump, or
to measure the inlet / suction pressure using a G ¼
connection.
Connection (F) is meant to drain the pump, or to
measure the discharge pressure using a G ¼
connection.
5.6 Working range
Table 5: General working range specification
ATTENTION
The temperature difference between the
medium and the pump should never
exceed 60 °C. The pump must be filled /
heated-up slowly in any case where the
difference between pump and medium
is more then 30 °C to avoid any chance
of a thermal shock.
For minimum/maximum flow at medium temperature
of 20
o
C see table 6: Minimum/maximum capacity
(Qmin/max); for higher temperatures see figure 4:
Minimum capacity vs. temperature (in % of Q
optimum)
Table 6: Minimum/maximum capacity (Q
min/max
)
Pump type DPHM note
Ambient temperature [°C] -20 up to 30 (50)
1
,
2
,
3
1. Avoid freezing the pump.
2. If the ambient temperature exceeds the above value or
the motor is located more than 1000 m above sea
level, the motor cooling is less effective and could
require an adapted motor power. Please contact your
supplier for more detailed advice.
3. Single phase motors are equipped either with a ther-
mal circuit breaker or motor winding protection (see
2.3.2 Motor protection). Please contact your supplier
for more detailed information about your motor protec-
tion.
Medium temperature [°C] -10 up to 60
Minimum inlet pressure NPSH
req.
+ 1 m
Viscosity [cSt] 1-100
4
4. Deviation in viscosity and/or density could require an
adapted motor power. Please contact your supplier for
more detailed advice.
Density [kg/m
3
] 1000-2500
2
Cooling forced motor cooling
Minimum frequency [Hz] 30
Maximum frequency [Hz] 60
5
5. Pumps that are intended for 50 Hz operation, may not
be connected to 60 Hz power supply.
Maximum number of starts see motor data sheet
6
6. Frequent start/stops, in particular in combination with
higher pressure differences (
Δ p) may result in a short-
ened product lifetime. Consult your supplier for such
applications.
Noise emission see motor data sheet
7
7. Only the noise emission of the motor is documented.
Allowable size of solids
pumped 5 µm to 1 mm
size Q
min/max
[m
3
/h]
2 pole
50 Hz 60 Hz
Min. Max. Min. Max.
2 0.2 3.3 0.2 4.0
4 0.4 6.5 0.5 7.8
6 0.6 9.0 0.8 10.8
4431
Figure 4: Minimum capacity vs. temperature
(in % of Q optimum)
4431
9
9,5
10
10,5
11
40 45 50 55 60
Q %
T [°C]