Using Aluminum pipe, the hose barbs connections to the chill plate (which may leak over time) were located external to the enclosure. A coolant leak within the controller box would likely go unnoticed until damage has already been done. Teflon tape will be used on all threads and the enclosure penetration will employ grommets to reduce dirt and water entry.
All fittings are 1/8" NPT Aluminum and were sourced from McMaster-Carr:
2 x 90 degree elbow, part 44705K266, at $5.87 each;
1/8" pipe x 1.5"L nipple, part 44665K161, at $1.97;
1/8" pipe x 2.5"L nipple, part 44665H121 at $2.59:
1/8" pipe x 6" nipple, part 44665k119, at $4.75;
1/8" pipe x 8"L pipe nipple, part 44665K411, at $6.03:
qty 2 x 1/8" pipe to 1/4" hose barb, part 5357K51, at $7.44 each.
2 x Buna-N Rubber grommets, A=11/16", B=1/16", C=7/16", D=15/16", E=5/16". Part 9307K25 at 50 for $10.91.
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DSC01761 of the above Aluminum fittings finger tightened to the controller (this shows an exit to the high voltage side).
DSC01760 after placement of the controller enclosure as a trial fitting showing that after tightening there will be room for the tubing. Two holes with grommets will be prepared through the left wall of the enclosure for exit of the tubing (this shows an exit to the high voltage side).
DSC01830 after final installation with tubing exit to the low voltage side.
DSC01829 close up showing the exit of the cooling lines on the low voltage side. The USB port for motor programming is at the top. Did not have an 11/16" drill and instead used a step drill and measured the opening with calipers until sized correctly.
DSC01831 showing an Aluminum plate located internally for mounting of additional components.
DSC01832 showing possible placement of components. Power feed at upper left, master shutoff switch (red handle) lower left, controller top center, 500 amp fuse lower row (second from left), contactor (third from left), and optional amperage current sensor bottom right.
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