8.0.0

Start-Up Sequence ACP Series Chillers

8.1.0

Mains power (3 phase to unit) must be on twenty-four (24) hours before the chiller has to run. The chiller on/off switch is to be left in the off position. This allows the compressor crankcase heater to boil off any liquid refrigerant in the oil preventing damage to the compressor.

8.2.0

Filling the tank: DO NOT CONNECT CITY WATER LINE or HOSE DIRECTLY TO THE TANK. Our tank is vented to the atmosphere and is not designed to withstand any water pressure. Pressurizing the tank is dangerous and will damage tank.

8.2.1

Fill the tank with a hose until the water level can be seen in the clear plastic fill tube. Shut off the water supply and start the pump (see item 3 for correct pump rotation). As the water is circulated and fills the process equipment the water level will fall. Keep topping up the tank until the water level is constant.

8.2.2

It is also recommended that a water/glycol mix be used even if you are operating the chiller at 50° F. (10° C). At 50° F. leaving water temperature a 30% solution should be used.

8.3.3

This will protect the chiller vessel in event the unit is operated below 32° F. and will also prevent scaling in water channels and steel pipes.

8.3.0

Check rotation of the chiller pump, there is an arrow on the pump for correct rotation. This must be set correctly.

8.4.0.

Set temperature on controller to process temperature desired. NOT BELOW 45° F. WITHOUT A WATER/GLYCOL SOLUTION.

8.5.0.

To operate with a water/glycol solution see the chart in service manual for the proper mixture at a desired process temperature. Glycol percentage is determined by subtracting 15° F. (8.3° C.) from the desired operating temperature.

IE:

8.6.0.

DO NOT RESTRICT THE CHILLED WATER FLOW, if the chiller connection is 1" and your process is 1/2" a by-pass line must be installed. The by-pass should be sized to ensure that the combined size of the process pipe and by-pass add up to the same diameter as the chiller line out.

8.6.1

The by-pass should be connected from the process line out back to the return line to the tank, and a valve should be installed to properly adjust the by-pass flow.

8.6.2

If the by-pass is not installed the flow of water through the chiller vessel is reduced and can freeze causing sever damage to the chiller vessel and voiding warranty.

8.6.3

If you are installing a line out to the plant and connecting to multiple machines it is recommended that the bypass be installed at the furthest point from the chiller.

8.7.0

Check the level of the fluid in the holding tank after chiller has been operating a few minutes, the level will fall due to filling of the process equipment, lines and as air is vented through the tank fill. Top up as needed.

Adjusting Temperature Controller Set Points

The setting of the temperature controller is important and they will use this part most often for changing the operating temperature.

8.8.0

Recommended settings switches and differentials for Ranco two (2) switch temperature controller used on single compressor chiller units. Models ACP-3, 5, 7.5, 10 and 15.

8.9.0

Recommended settings switches and differentials for Honeywell four (4) switch temperature controller used on dual compressor chiller units. Models ACP-1OD, 15D, 20D, 25D and 30D.

8.9.1

When set point is adjusted (moving switch 1 only) all other switch settings and differentials follow the new set point without adjusting them.