B722-40-880 Issue F
Page 18 © Edwards Limited 2013. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Technical data
2.10 Indicator LEDs
The DX pump has two indicator LEDs, shown in Figure 1 and 2 as item 8.
Note: If excessive electrical load is applied to the Normal output line, the Normal LED may illuminate.
2.11 Operating and storage environment
Table 12 - 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.
In a fail condition this LED flashes in a sequence to
indicate error codes and can be used for fault finding.
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.
Table 13 - 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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