Grundfos 527579, Инструкция по установке и эксплуатации

Страница: 9 / 13

English (GB)
9
6. Control panel
The pump control panel, see fig. 1, incorporates the
following buttons and indicator lights:
• Buttons, and , for setpoint setting.
• Light fields, yellow, for indication of setpoint.
• Indicator lights, green (operation) and red (fault).
Set the desired setpoint by pressing button or .
The light fields on the control panel will indicate the
setpoint set.
Continuously pressing button will stop the pump.
Continuously pressing button will increase
setpoint to max.
Fig. 1 Control panel
During normal operation the green indicator light is
on.
In case of non-critical faults allowing continued
operation of the pump, both the red and green
indicator lights will be on.
In case of a critical fault stopping the pump, only the
red indicator light will be on.
7. Ambient temperature and altitude
If the ambient temperature e40 °C or if the
pump is installed more than 1000 m above sea level,
the motor must not be fully loaded due to the low
density and consequently low cooling effect of the
air. In such cases, it may be necessary to use a
motor with a higher output.
Figure 2 shows that the load of a CME Booster must
be reduced to 88 % when installed 3500 m above
sea level. At an ambient temperature of 70 °C, the
load must be reduced to 78 % of rated output.
In such situations, use an oversize motor.
Fig. 2 P2 depends on temperature and altitude
TM
00
76
00
03
04
Caution
In case of a fault that cannot be reset,
always call a Grundfos service man,
even if the pump is able to continue
operation.
Light
fields Buttons
Indicator lights
T
M
04
37
92
50
08
20 25 30 35 40 45 50 55 60 65 70 75 80
50
60
70
80
90
100
[%]
P 2
t [°C ]
1000 2250 3500 4750 m
CME