Cooling; Cooling Requirements; Figure 25 Logic Interface Connection - Mixed Parallel And Serial Operation - Edwards nEXT730D Instruction Manual

Figure 25 Logic interface connection - mixed parallel and serial operation

1. RS232 interface on control equipment 1. RS232 interface on control equipment
3. Fuse 3. Fuse
5. Optional LED indicator - normal speed 5. Optional LED indicator - normal speed
7. Optional serial link selector 7. Optional serial link selector
9. Optional voltmeter 9. Optional voltmeter
11. Optional standby switch 11. Optional standby switch

5.8 Cooling

5.8.1 Cooling requirements

NOTICE:
Ensure that the pump is adequately cooled to prevent damage to the rotor and
bearing.
When using alternative cooling arrangements other than the standard Edwards
cooling accessories, ensure cooling is not solely directed or ducted onto the pump
controller.
If the pump will be located inside an enclosure, ensure that there is adequate
ventilation so that the ambient temperature around the pump does not exceed 40 °C.
Note:
During operation, if the temperature of any surface of the pump is higher than 50 °C, the
cooling is inadequate and should be increased. Pump performance may be affected if you
do not cool the pump and nEXT motor controller adequately.
Edwards recommends that, wherever possible, the pump is cooled by forced air cooling
or water cooling.
Select the cooling type required according to the ambient temperature:
B8J200880_D
300812671_002_C3
B8J200880_D - Installation
2. Optional 24 V d.c. electrical supply 2. Optional 24 V d.c. electrical supply
4. Optional LED indicator - system OK 4. Optional LED indicator - system OK
6. Current limit resistor for LED 6. Current limit resistor for LED
8. nEXT pump 8. nEXT pump
10. Optional serial enable switch 10. Optional serial enable switch
12. Start switch 12. Start switch
Page 63 08/2021 - ©Edwards Limited