Tranquility
®
Fluid Cooler – 60 Hz
R e v. : F e b r u a r y 2 2 , 2 0 2 2
c l i m a t e m a s t e r.c o m
17
Loop Antifreeze Protection, Cont’d.
in flush reservoir level indicates amount of antifreeze
added (some carts are marked with measurements
in gallons or liters). A ten inch [25.4 cm] diameter
cylinder, 3 foot [91.4 cm] tall holds approximately 8
gallons [30.3 liters] of fluid plus the hoses (approx.
2 gallons, [7.6 liters], which equals about 10 gallons
[37.9 liters] total. If more than one tankful is required,
the tank should be drained immediately by opening
the waste valve of the flush cart noting the color of the
discharge fluid. Adding food coloring to the antifreeze
can help indicate where the antifreeze is in the circuit
and prevents the dumping of antifreeze out the waste
port. Repeat if necessary.
5.
Open flush valves to flush through both the unit and
the loop and flush until fluid is homogenous and
mixed. It is recommended to run the unit for 15-20
minutes to ‘temper’ the fluid temperature and prepare
it for pressurization. Devoting this time to clean up can
be useful. This procedure helps prevent the periodic
“flat” loop condition.
6.
Close the flush cart return valve; and immediately
thereafter, close the flush cart supply valve, leaving
a positive pressure in the loop of approximately 50
psi [345 kPa]. This is a good time to pressure check
the system as well. Check the freeze protection of
the fluid with the proper hydrometer to ensure that
the correct amount of antifreeze has been added to
the system. The hydrometer can be dropped into the
flush reservoir and the reading compared to Chart
1a for Methanol, 1b for Propylene Glycol, and 1c for
Ethanol to indicate the level of freeze protection. Do
not antifreeze more than a +10°F [-12.2°C] freeze
point. Specific gravity hydrometers are available in
the residential price list. Repeat after reopening and
flushing for a minute to ensure good second sample
of fluid. Inadequate antifreeze protection can cause
nuisance low temperature lockouts during cold
weather.
7.
Close the flush cart return valve; immediately
thereafter, close the flush cart supply valve, shut off
the flush cart leaving a positive pressure in the loop
of approximately 50-75 psi [345-517 kPa]. Refer to
Figure 10d for more details.
⚠
WARNING!
⚠
WARNING!
Always dilute alcohols with water (at least 50%
solution) before using. Alcohol fumes are flammable and
can cause serious injury or death if not handled properly.
When handling methanol (or any alcohol), always wear
eye protection and rubber gloves as alcohols are easily
absorbed through the skin.
-50°F
-40°F -30°F -20°F -10°F
0°F
10°F
20°F
30°F
40°F
50°F
0.960
0.965
0.970
0.975
0.980
0.985
0.990
0.995
1.000
Low Temperature Protection
Specific Gravity
-45.6°C
-40°C
-34.4°C
-28.9°C
-23.3°C
-17.8°C
-12.2°C
-6.7°C
-1.1°C
4.4°C
10°C
1.00
1.01
1.02
1.03
1.04
1.05
1.06
1.07
Low Temperature Protection
Specific Gravity
-40°F
-30°F
-20°F
-10°F
0°F
10°F
20°F
30°F
40°F
-40°C -34.4°C -28.9°C -23.3°C -17.8°C -12.2°C -6.7°C -1.1°C
4.4°C
0.975
0.980
0.985
0.990
0.995
1.000
-5°F
0°F
5°F
10°F
15°F
20°F
25°F
30°F
35°F
1.7°C
-1.1°C
-3.9°C
-6.7°C
-9.4°C
-12.2°C
-15.0°C
-17.8°C
-20.6°C
Low Temperature Protection
Chart 1a: Methanol Specific Gravity
Chart 1b: Propylene Glycol Specific Gravity
Chart 1c: Ethanol Specific Gravity
Low Water Temperature Cutout Setting - AXM Control
When antifreeze is selected, the GND to CO jumper wire
should be clipped to select the low temperature (antifreeze
10°F [-12.2°C]) set point (see “Low Water Temperature
Cutout Selection” in this manual for further details).
