Sterlco GP Series 20-60 HP Packaged Chillers - Manual (Page 36)

GP Series Portable Chillers Chapter 3: Installation 36 of 93
Operating the chiller setpoint below 45°F (7°C) without the
proper amount of glycol for freeze protection could result in a
damaged evaporator. ACS Group does not warrant the freeze
up of the evaporator under any circumstances.
• The air-cooled condenser should have an adequate supply of 75º to 115ºF (24º to 46ºC)
air for proper operation.
• The tower or city water condenser cooling in and out connections should be completed
and an adequate supply of 85ºF (30ºC) tower or 70ºF (21ºC) city water, at 25 psi
pressure, for proper operation.
• Connect the main 3 phase incoming power to
the unit making certain that line one (1) L1 is
connected to the A phase, line two (2) L2 is
connected to the B phase, and line three (3) L3
is connected to the C phase. Check for proper
rotation direction of fan(s) and pump(s). The
best route for the main power wiring is from
the floor up to the right side of the enclosure
on the top.
The crankcase heater is automatically energized
when the main power is applied (main power switch
in the ON ( | )position. It should be on for at least 24 hours before startup to force dissolved
refrigerant from the compressor oil.
Finally, the cable for the display is coiled up under the control enclosure and the display is
shipped inside the control enclosure. The handle on the panel in front of the control
enclosure has a hole in the corner to feed the cable to the outside of the cabinet. Plug the
cable into the back of the display.
Turn the power switch to the ON ( | ) position. The display’s backlight will turn on and the
controller will go through a self-diagnostic routine prior to displaying the main status screen.
Power Cable (highlighted in
yellow)