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Technical data
B800-00-880 Issue A
2.10 Indicator LEDs
The nEXT pump has three indicator LEDs, shown in Figure 10.
Note: If an external electrical load is connected to the Normal output line, the Normal LED may illuminate.
2.11 Operating and storage environment
Table 14 - Indicator LEDs
LED Description
Status LED This yellow LED flashes with a 50% duty cycle at the
rotational frequency of the pump motor. At high speeds
it appears continuously on.
The LED switches off when the rotational speed is very
low or stopped.
If a service is due, this LED flashes in a sequence to
indicate which service operation is required. Refer to
Section 5.5.
Normal LED This green LED remains on all the time that the pump
rotational speed is above the Normal speed setting,
irrespective of whether the pump is accelerating or
decelerating.
Alarm LED This red LED flashes in a sequence to indicate an error
code if a fail condition is preventing pump operation.
The error codes can be used for fault finding as
described in section 5.5.
Table 15 - Operating and storage environment
Range Data
Ambient operating temperature range 5 °C to 40 °C
Ambient operating humidity range 10 to 90% RH (non-condensing)
Maximum operating altitude 2000 m
Ambient storage temperature range -30 °C to 70 °C
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