Edwards nEXT 55, Инструкция по эксплуатации

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Note:
During operation, if the temperature of the surface of the pump is higher than 60 °C, you
have to increase the cooling. If you do not sufficiently cool the pump and motor
controller, it will affect the performance of the pump.
We recommend to cool the pump by forced air-cooling or water-cooling, when possible.
Select the necessary cooling type as per the ambient temperature:
▪ Natural convection cooling: For the light pumping duties, with an ambient air
temperature less than 35 °C, natural convection cooling can be sufficient to cool
the pump.
▪ Forced air-cooling: The ambient air temperature must be 5 °C to 40 °C when you
use forced air-cooling. Make sure that there is sufficient supply of cooling air to the
pump.
▪ Water-cooling: Use water-cooling for the higher load applications or when you use
a flange heater (CF variants only). Ambient air temperature must be less than 40 °C
when you use the water-cooling. The water temperature must be between 10 °C
and 40 °C.
Refer to Pump performance data Pump performance data nEXT85 on page 32 for more
information on the performance.
4.8.2 Forced air cooling
You can configure the customer controller to operate the air cooler only if the
commands can be sent through the serial interface or a manufacturer's TIC Turbo and
Instrument Controller or Turbo Controller.
Air-cooling accessories are available for the pump (refer to
Accessories on page 105).
Install the air cooler as given in the instruction manual supplied with it. If you use an
alternative fan for air-cooling, make sure that the flow rate is more than 100 m
3
h
-1
(60 cfm).
You can supply the power to the air cooler by a customer external power supply, the
manufacturer's TIC Turbo and Instrument Controller, the TIC Turbo Controller or the
Controller. Connect the connector into the socket at the side of the controller. Refer to
Figure: Auxiliary interface connection .
4.8.3 Water cooling
An accessory is available to water cool the pump. Install the water cooler as given in the
instructions supplied with it.
Make sure that the water supply is constant and the quality, temperature and flow rate
limits of the water are as per the Table: Water cooling block supply requirements .
CAUTION: PUMP COOLING
Risk of minor injury or damage to equipment. If the coolant supply fails, cool the
pump to ambient temperature before you restart the pump.
07/2021 - ©Edwards Limited Page 60 B8G000880_E
B8G000880_E - Installation