4-10
Cooling Loop Installation
PowerFlex 700L Frames 2, 3A, and 3B Liquid-Cooled AC Drives User Manual
Drive Coolant Requirements
Recommended Coolants
Table 4.B
lists approved sources and recommended coolants with
appropriate corrosion inhibitors
for the drive loop.
Table 4.B Recommended Drive Loop Coolants
Non-premixed coolants require a coolant-to-water mix ratio of 50% by
volume.
Important:
Since coolant performance slowly degrades over time, we
recommend replacing the drive loop coolant every two years
and/or whenever the loop is drained for servicing.
Corrosion Inhibitor
If an approved coolant is not used, the drive coolant must consist of clean
water
with a corrosion inhibitor
. An approved corrosion inhibitor is
Chemtool, Inc. (www.chemtool.com) part number Watertool 4435-C. The
recommended concentration of the inhibitor is 8-10% by volume.
Deionized water is prohibited
. Use distilled water or water with less than
50 ppm concentrations of these chemical compounds:
•
Sulfate and chloride
•
Hard water ions such as Mg++ and Ca++
Source
Coolant
Interstate Chemical
http://www.interstatechemical.com/
contact.htm
•
NFP-50
(1)
; a 50/50 premix of propylene glycol and distilled water
•
NFE-50
(1)
; a 50/50 premix of ethylene glycol and distilled water
Koolant Koolers/Dimplex Thermal
Solutions
http://www.koolantkoolers.com/
index.php/nic=contact
•
K-Kool-E
(1)
; ethylene glycol (available premixed with distilled water)
•
Propylene glycol
(1)
also available
Dow Chemical
http://www.dow.com
•
Dowtherm
®
SR-1
(2)
; ethylene glycol
•
Dowfrost
®
(2)
; propylene glycol
Dowtherm and Dowfrost are registered trademarks of the Dow Chemical Company
(1)
Available in 5 gallon pails.
(2)
Not premixed with distilled water, and may not be available in 5 gallon quantities.
!
ATTENTION:
Ethylene and propylene glycols must be
inhibited and silicate free.
Use of common silicate-containing,
automotive-type ethylene glycol solutions is prohibited as they
can damage the heat exchanger and/or drive and cooling
module equipment.
Aotewell Ltd
www.aotewell.com
Industry Automation
HongKong|UK|China
+86-755-8660-6182
