6
•
If not cleaned immediately after use, soak in a hot PBW (Powdered Brewery Wash) solution for ½ to
1hr, then rinse thoroughly with hot tap water. If you have the means to circulate hot PBW through
the exchanger this will result in a more thorough cleaning. Circulate in both directions.
•
Clean with mild citric or phosphoric acid solution as recommended to remove water salts
•
Sanitize with the fittings up to ensure that all air is purged from the system
•
Remove and sanitize adapter fittings after each use
•
Ensure hoses, pump and other drain fittings are properly sanitized before use
•
Boiling the exchanger before use will sterilize the unit, but if properly cleaned immediately after use
this is not necessary.
Estimating Performance:
The graph below is used to predict the gallons per minute (gpm) of wort you'll be able to chill from boiling
down to 20°C (68
o
F) (ideal fermentation start temp) using water from your garden hose as the cooling
media. Wort specific gravities above 1.040 will perform slightly lower than the graph. Specific gravities
below 1.040 will perform slightly better than the graph. Note that small changes in inlet cooling water
temperature and flow can have a large impact on the wort outlet temperature and flow.
Therminator Performance Data
1.040 S.G. 68 F Wort Outlet Temp
50
52
54
56
58
60
62
64
66
68
0.0
0.5
1.0
1.5
2.0
2.5
Wort Flow (gpm)
C
o
o
li
n
g
W
a
te
r
T
e
mp
(
F
)
Tolerance:
+/- 0.2 gpm
+/- 2 F
3 gpm
5 gpm
2 gpm
1) Measure the cooling water flow rate in your brewery using a bucket of known volume and a stopwatch.
Divide the gallons by the minutes (gal/min). Then measure the cooling water temperature using an
accurate digital type thermometer. Record these values. Note: these values will change throughout the
year.
2) Choose either the 5.0 gpm, 3.0 gpm, or 2.0 gpm line that best matches your cooling water flow rate. If
your flow lies between these lines, it is acceptable to interpolate between them.
3) Go to the point on the Y-axis labeled "Cooling Water Temp (F)" to your cooling water temperature
measured in step (1).
