Vogt TUBE-ICE 03TA Service Manual page 67

03TA Service Manual
Chemical Cleaning. Vogt Tube-Ice® makes no recommendation for any particular chemical
preparation. The same chemical may not be effective for all situations.
a) Use only preparations from an established, reliable source.
b) Follow directions exactly, particularly regarding amounts to use, and flushing or neutralizing
procedure after cleaning.
c) Close the water supply stop valve. Remove the condenser water-regulating valve (41).
d) Circulate the solution through the condenser until it is considered clean.
e) Flush the condenser according to directions.
f) Install the water regulating valve and connecting piping.
g) Open the water supply stop valve and check for leaks.
Mechanical Cleaning.
Part I.
a) Close the stop valve in the water supply line.
b) Drain the water from the condenser.
c) Remove water regulating valve (41) and attached piping to the condenser.
d) Remove the cover plate on the side of the frame to expose the condenser end plate.
e) Remove the nuts, water plates, and gaskets from both ends of the condenser. If the gasket does
not lift off with the end plate, do not try to pry it off. The seal surface may be damaged, which
would cause a water leak. To free a sticking gasket, replace the water plate and tap it on the
outside face with a mallet or a block of wood. After a few taps, the gasket will spring free and
will then slip off with the water end plate.
f) Gaskets need only be rinsed in running water: rust, scale or dirt will not stick to gasket material.
A rag or soft brush is all that is required to remove any foreign matter.
Part II.
The inside of the water end plates and the outer tube sheet surfaces should be cleaned only with clear
water and a rag or a soft bristle brush. A worn paintbrush is excellent.
These surfaces have been coated with a special material that will give years of protection against
corrosion unless damaged. Never use a wire brush or a strong caustic on these surfaces.
Flush condenser tubes clear with air, water, or a piece of rag on a stick or wire. In many cases this is
all that is required. If the inside surfaces are smooth, even though discolored, further cleaning is not
necessary. It is not necessary to get a bright copper surface on the inside of the tubes. They will
discolor almost immediately in service and the condenser has been designed with an adequate
reserve for moderate fouling on these surfaces.
If, however, a rough coating remains inside the tubes after flushing and wiping, further cleaning is
desirable. The color of this coating varies with water conditions, but roughness indicates cleaning
tools should be used.
3/31/14
7-5
MAINTENANCE