Rockwell Automation 20GY PowerFlex 755 with OEM Liquid Cooling Frame 6 and 7 AC Drives - Manual (Page 8)

Rockwell Automation Publication 20GY-IN001A-EN-P - June 2011
8 PowerFlex® 755 with OEM Liquid Cooling Frame 6 and 7 AC Drives
Coolant Requirements General Cooling System Requirements
Table 1 lists the required coolant specifications for PowerFlex 755 with OEM
Liquid Cooling Frame 6 and 7 AC drives.
Table 1 - Required Coolant Specifications
Non-diluted coolants require a coolant-to-water mix ratio of 50% by volume.
Specification Description
Maximum Rated Pressure 1275 kPa (185 psig)
Minimum Flow Rate 19 liters/min (5 gal/min)
Coolant Temperature 0…46 °C (32…115 °F )
Coolant Fitting Type Brass #10 o-ring face seal
Coolant Fitting Torque 81 N•m (60 lb•ft ) ±10%
Coolant Specification Description
OEM-specific coolants are
qualified Consult factory for details
Water-Glycol Coolants:
Interstate Chemical
www.interstatechemical.com/
contact.htm Use only approved coolant (consult factory for details)
• 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
(1) Available in 5 gallon pails.
Koolant Koolers/Dimplex
Thermal Solutions
www.koolantkoolers.com/
index.php/nic=contact • K-Kool-E (1) ; ethylene glycol (available premixed with distilled
water)
• Propylene gylcol (1) also available
Dow Chemical
www.dow.com • Dowtherm
®
SR-1
(2)
; ethylene glycol
• Dowfrost
® (2)
; propylene glycol
Dowtherm and Dowfrost are registered trademarks of Dow Chemical Co.
(2) Not premixed with distilled water, and may not be available in 5 gallon quantities.
IMPORTANT Since coolant performance slowly degrades over time, the drive loop
coolant should be replaced every two years and/or whenever the loop
is drained for servicing.