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18
Improper drawing of beer into glass.
#2
Open faucet quickly and completely.
Check and find the correct distance to hold glass
from faucet when drawing. Proper foam should be
a tight creamy head, and the collar on the average
glass should be ¾” to 1” high.
Beer drawn without a head has the appearance of
being flat.
Not enough pressure.
#3
Increase pressure if beer runs too slowly. The
correct flow should fill a 10-oz glass in 4 seconds
(approx. 8 oz of liquid).
Defective Thomas and Tongue Vents.
Pressure is shut off.
#4
Check all washers frequently, particularly the air
vents. A clogged vent will obstruct the flow of air
or CO
2
.
Check source of pressure. Check power source
when air compressor is used. Air compressor
should never be connected to light switch. Make
certain to have a separate electric plug outlet for
the compressor.
Check CO
2
tank. If empty, replace (See inside
cover for proper procedure).
When barrel is tapped, and proper pressure
applied, pressure must always remain on until
barrel is empty.
If beer is started without first applying pressure,
beer will be wild at the start, and flat towards the
end.
Pre-cooler, or beer system, too cold.
#5
With an accurate thermometer, check temperature
in pre-cooler or box.
Temperature at the faucet should always be
colder by at least two degrees than at the
precooler or box.
Sluggish pressure regulators.
#6
A regular seat, or the regulator diaphragm, may
require replacing.
Also, check the same as you would for
Corrections 3 & 4.
Contaminated air source.
Oil or grease fumes.
#7
Filter all air after it leaves compressor.
Oil fumes from compressor, or kitchen grease
fumes, pumped into beer, will cause Flat Beer.
If possible, CO
2
gas should be used as
a pressure
source.
Moisture in Air system.
#8
With the use of an air compressor, it is imperative
to have a moisture trap installed in the Pre-cooler,
and drained daily. This is in addition to an
activated charcoal filter, necessary to purify the air
just before it enters the barrel.
With tank type compressors, drain the tank
weekly.
Moisture traps should be drained daily.
Rapid movement of air.
#9
An air fan, or exhaust blower drawing air, or
blowing air, across the bar where beer is drawn,
may cause the head of foam to fall quickly. Fans
or blowers should be located so that air
movement is not directly across from where beer
is drawn.
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