Forced Air Cooling; Water Cooling; Figure 26 Attaching The Water Cooling - Edwards nEXT730D Instruction Manual

▪ Natural convection cooling – only for nEXT730D and nEXT930D:
For some light pumping duties, with an ambient air temperature less than 25 °C,
natural convection cooling may be adequate to cool the nEXT pump.
▪ Forced air cooling – option:
The ambient air temperature must be 5 °C to 40 °C when using forced air cooling.
Ensure that there is an adequate supply of cooling air to the pump.
▪ Water cooling – standard for nEXT1230H, option for nEXT730D and nEXT930D:
Use water cooling with higher load applications or when using a flange heater (CF
variants only). When using water cooling, ambient air temperature must be less
than 40 °C and the water temperature must be between 10 °C and 40 °C.
Refer to Figure: Cooling requirements for further performance information.

5.8.2 Forced air cooling

The customer controller can be configured to drive an air cooler only if commands can
be sent via the serial interface or an Edwards TIC Turbo and Instrument Controller or
Turbo Controller.
Air cooling accessories are available for nEXT pumps. Fit the air cooler as described in
the instruction manual supplied with it. If an alternative fan is used for air cooling,
ensure that the flow rate is above 100 m
The air cooler can be powered by a customer external power supply, the Edwards TIC
Turbo and Instrument Controller, the TIC Turbo Controller or the nEXT Controller. Plug
the connector into the socket at the side of the controller.

5.8.3 Water cooling

Figure 26 Attaching the water cooling

1. Hose connections for 6x1 hose 1. Hose connections for 6x1 hose
The nEXT1230H pump has a built-in cooling water block as standard.
For nEXT730D and nEXT930D: Attach the cooling water block to the pump with four M4
screws, tightening torque is 3
B8J200880_D
300812671_002_C3
B8J200880_D - Installation
3 -1
h (60 cfm).
+1
Nm.
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