23
5.
If any air bubbles come from the con-
denser, replacement is necessary.
Condenser Test for Scale
Test the cooling water side of the condenser for
scale as follows:
1.
Adjust the cooling water throttling valve
so that just a puff of steam issues from
the condenser vent.
A. In extreme cases of scale, steam will
always blow from the condenser vent,
even when the cooling water throttling
valve is wide open.
B. Ensure that a minimum cooling water
pressure of 30 psi is maintained. A drop
in cooling water pressure will cause
steam to blow from the condenser
because of inadequate cooling.
2.
Remove the condenser if the discharge
pipe is cool enough to hold. Inspect the
interior of the condenser for scale. If
scale is present, pour the acid cleaning
solution (see “Hard Scale Removal”) into
the condenser through one of the cooling
water connections.
3.
Let the solution remain in the condenser
for 15-20 minutes, then drain. Repeat if
necessary until scale is removed.
4.
Wash the interior of the condenser thor-
oughly after using acid solution.
5.
Install the condenser on the still.
T
ROUBLESHOOTING
Note
The condenser cannot be
repaired and must be replaced
as a unit.
Caution
Do not add the acid cleaning
solution rapidly for if any
bicarbonate scale is present,
gas will be released in consider-
able amounts. Do not use the
acid cleaning solution on the
tinned (Distilled Water) side of
the condenser.
