Edwards nEXT300 User Manual

▪ Water cooling: Use water cooling when the ambient air temperature greater than
35 °C or when you use a bak
eout band (CF variants only). When you use the water
cooling, ambient air temperature must be less than 40 °C and the water
temperature must be between 10 °C and 20 °C.
We recommend to cool the pump by forced air cooling or water cooling, when possible.
Refer to Table: nEXT pumps technical data for more informaon on the performance.
4.10.2 Forced air cooling
You can congure 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 99).
Install the air cooler as given in the instrucon manual supplied with it. If you use an
alternave fan for air cooling, make sure that the ow 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. If a TAV solenoid valve is connected to the controller, you cannot supply the
power to the air cooler by the controller. Obey the electrical connecon instrucons in
the air cooler manual to wire the lead of the air cooler into the controller connector
supplied with the pump (refer to Figure: Controller connector showing pin numbers).
Connect the connector into the socket at the side of the controller (refer to Figure:
Controller status informaon).
4.10.3 Water cooling
CAUTION: CONDENSATION IN PUMP
Risk of damage t
o equipment. To prevent the condensaon in the pump and
controller, stop the cooling water supply when the pump is set to o.
Condensaon can occur if you use a water cooling block in a high humidity
environments. Protect the pump and other equipment by considered design of the
installaon. Refer to Figure: RS485 mul-drop connecon for recommendaons.
A WCX water cooler accessory is available for the pump (refer to Accessories on page
99). Install the WCX water cooler accessory as given in the instrucon manual supplied
with it. The cooling water supply must be as per the specicaon given in Cooling water
on page 28. Pipes in the water cooling circuit can get blocked if the cooling water has too
much calcium carbonate or large parcles. Corrosion of the water cooling circuit can
occur if the cooling water has too less quanty of calcium carbonate and oxygen. A
drinking water of a good quality is applicable. If in doubt, check the quality of the cooling
water supply. If necessary, do the treatment and ltraon.
1. Connect the cooling water supply to the water cooler at the pump. Use one of the
two push‑
t connectors on the water cooler for the water supply or return
connecons.
2. Push the nylon hose (approximately 10 mm outer diameter) into the ends of the
hose connect
ors of the water cooler at the pump. You can also remove the hose
04/2022 - ©Edwards Limited
Page 61B80000880_G
B80000880_G - Installaon

Edwards nEXT300 Specifications

General

Brand	Edwards
Model	nEXT300
Category	Water Pump
Language	English