IceMaster G40.1 – Glycol Chiller/IceBank Instruction Manual
Page
7
of
10
www.KegLand.com.au
Last Updated 29/07/2020 2:58 PM
Filling the reservoir
The G40 can be operated with either just water in the reservoir or both water and glycol to reduce
the freezing point of water.
IMPORTANT: If you are only using water in the reservoir and not glycol then do not set the
temperature of the reservoir below 2°C.
Fill the reservoir to a total of 20L with water if the reservoir is set at 2°C or an appropriate
Concentration of glycol solution if dropping the reservoir below 2°C according to the table below.
Ensure the cooling coils are submerged. The amount of glycol required to be added to the reservoir
depends on the desired set temperature of the reservoir which is dependent on a number of factors
including heat ingress into the entire system, insulation of the glycol lines, ambient temperature, the
number of kegs being cooled and the temperature of the kegs. Use the table below to determine
what percentage of glycol you require.
Glycol Volume %
Freezing Point °C
Specific Gravity at 21°C
0
0.0
1.000
10
-3.3
1.006
20
-7.8
1.015
30
-13.3
1.024
You can measure the glycol percentage using a calibrated refractometer and comparing to the
specific gravity at 21°C in the above table.
We would advise running a 20% glycol solution however, if you do not have a jacketed fermenter or
have the fermenter in a very warm environment you can run it at a higher glycol concentration. The
pumps are not designed to be run with a glycol concentration higher than 30% hence it is not
advised to exceed this glycol concentration. Doing so may damage the pumps.
