Technical information

UGH024/1103 Portable Chillers
INSTALLATION
3-7
FILLING
THE
CHILLER
CONTINUED
To fill with glycol solution:
Mix the glycol to the proper percentage.
Use the table to determine the percentage (by volume) of
glycol needed for the process temperature (in °F) you
require. Mix the proper percentage of glycol with water.
1
Close the To Process and From Process valves.
(Factory Optional)
Open the Fill/Drain valve and fill chiller
to the fill mark on the Water Level gauge. If the chiller is
overfilled, the excess fluid spills out the vent tube. DO
NOT OVERFILL.
Close the Fill/Drain valve.
Check the coolant level.
The coolant level drops as the coolant begins to circulate
and fill the connected plumbing. Check the coolant level
on the back of the chiller. The coolant level shows on the
water level gauge. Make sure coolant level is filled to the
mark on the gauge. Add more if needed.
Set the Chiller control for ‘Percent Glycol’.
Set the percent glycol using the PLC control (see Setting
Percent Glycol,section4). Do this step after main power is
connected to the chiller and initial startup has already
been performed.
2
3
4
5
6
Recommended Percentages of Glycol for
Chilled Water Freeze Protection
Discharge water % Propylene % Ethylene
Temperature Glycol Glycol
Above 45°F 0 0
40°F 20 15
35°F 25 20
30°F 35 30
25°F 40 35
20°F 45 40
Below 20°F Consult Factory