Instruction manual

K4, K6, K9 series chillers – Installation and Operation manual
Issue 10.33
Page 8
on the right side of the chiller cover, when viewed from the front. Access is via the four
securing screws on the cover plate.
Having ensured that the system is correctly connected, with the inlets and outlets having
the correct orientation relative to your application, all joints tight and leak free, and with
the unit isolated from the electrical supply, prepare to fill the unit with Hexid fluid.
Hexid fluids are the preferred coolant choice as they provide excellent corrosion
protection, freeze protection, algae inhibition and good heat transfer properties.
Caution: Always use ATC recommended fluids in your K series chiller. Never use other
anti-freeze mixtures, as they may corrode your application and will damage the K series
pump seals.
Filling procedure
1. Check all valves are open, including solenoid valves located in your application.
2. Remove outer cover from the chiller, then remove cover from the tank
3. Fill with Hexid to 30mm below the rim of the tank neck.
4. Switch the unit on.
5. Wait while the fluid level drops in the tank.
6. Switch the unit off.
7. Repeat steps 3 to 5 until all of the air has been purged from the system.
8. Top up to 30mm below the rim of the tank neck to ensure the level switch is made.
9. Check the system carefully for leaks, including the inside of your application. The
system is now ready to be run.
Warning: Always isolate the chiller from the electrical supply when filling the tank.
There are two on-board circuit breakers protecting the chiller. The main three phase MCB
is located on the front panel. This also acts as the emergency off (EMO) and requires
continuity via the terminal strip located at the rear of the unit. Should a remote EMO be
required, a separate EMO may be fitted in series. The other MCB, protecting the single
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