Rockwell Automation LPM20 Liquid-Cooled AC Drive with High Performance Drive Control - Manual (Page 28)

1-16 Installation/Wiring
Table 1.C Coolant Requirements for LPM20 Drives
Corrosion Inhibitor
A corrosion inhibitor is required. The following two options are approved
sources:
1. Chemtool, Inc. (www.chemtool.com) part number Watertool 4435-C.
The recommended concentration of the inhibitor is 8 to 10% by volume.
2. Dow Chemical (www.dow.com) Dowtherm
®
SR-1 inhibited ethylene
glycol. The recommended concentration of the inhibitor is 25% by
volume.
Dowtherm is a registered trademark of the Dow Chemical Company.
Biocide
A biocide may be needed to control biological growth. Use of a biocide is
permitted. For specific recommendations, consult a reputable water
treatment company.
LPM20 Drive
Catalog Number
(positions 1-7 only)
Max. Output
Current (Amps)
Coolant
Temperature
Range (°C) Minimum
Coolant Flowrate
(GPM) Pressure Drop From Drive
Inlet to Drive Outlet (PSIG) at
Minimum Coolant Flow Rate
Coolant
Type
20ND608
608 5 to 40 7 10 Water (1)
608 0 to 40 7 10 WEG25 (2)
550 0 to 40 7 10 WEG50
(3)
608 0 to 40 10 22 WEG50
(3)
608 0 to 30 7 10 WEG50 (3)
(1) Water equals good quality or distilled water with Chemtool, Inc. corrosion inhibitor, 2% inhibitor by volume.
(2) WEG25 equals good quality or distilled water with approved ethylene glycol, 25% glycol by volume.
(3)
WEG50 equals good quality or distilled water with approved ethylene glycol, 50% glycol by volume.
!
ATTENTION: Ethylene glycol must be inhibited and silicate
free. Use of common silicate-containing, automotive-type
ethylene glycol solutions is prohibited as they may damage the
drive and cooling module equipment.