Vogt TUBE-ICE 05TA Service Manual Download

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05TA Service Manual

MAINTENANCE

8/13/01

7-2

Water Distributors.

The water distributors are located under the freezer cover (8) at the top of the

freezer. There are 72 distributors used in the models that have a 1 1/2” suffix (i.e.

Models 05TA-1

1/2), 102 distributors in models with suffix 1 1/4” (i.e., Models 05TA-1 1/4), and 156 distributors are
used in the models have 1” suffix (i.e., Model 05TA-1). These distributors may require occasional or
periodic cleaning to remove solids and foreign particles accumulated from the make-up water. The
frequency of this cleaning operation will depend on the characteristics of the water supply. The
cleaning operation is needed when the inside diameter of a large proportion of the ice becomes
irregular (due to channeling of water), or if some of the ice is opaque, or if there is a noticeable
decrease in ice capacity.

To clean distributors, stop the unit and remove the freezer cover (8) on top of the freezer. The water
distributors (one in each tube) may then be removed with pliers for cleaning. Use pliers on the
distributor’s top part with a twisting upward motion.

Water Tank.

The production of opaque ice can indicate that the water in the water tank contains a

concentrated amount of solids or salts.

Remove cover plate. Open drain valve (39). Clean tank thoroughly by flushing out with a hose and
scrubbing with a stiff brush. Fill the water tank with fresh water.

When restarting the machine, be sure that the water pump is circulating water. It is possible that air
may have collected in the pump impeller housing and the pump may have to be stopped and started
several times to expel the air.

Water Cooled Condensers

Checking Operation.

Scheduled maintenance for water cooled condensers is based primarily on the

operating conditions found at the machine. The condenser should be inspected at least annually and
cleaned as required. For extreme operating conditions where water quality is poor the condenser may
need to be cleaned several times a year. .

Proper operation of cooling towers will increase the interval between cleaning considerably. The
tower overflow rate should be checked frequently. If a tower is operated with insufficient overflow,
nominal 1-1/2 to 3 gallons per hour bleed depending on water quality, the resulting mineral
concentration in the water can cause rapid and heavy fouling inside the condenser tubes, requiring
excessively frequent cleaning. Also, these conditions often lead to severe corrosion.

Chemical additives, including those to stop algae and related growths, should be obtained only from a
reputable, established supplier, and used specifically according to directions. Excessive treatment of
the water can cause more harm than good and the condensers, pumps, piping, and the towers
themselves may be damaged.

It is advisable to double-check the system to make sure that fouling is actually causing the trouble.
High head pressure alone does not mean a fouled condenser.

The following possibilities should always be checked before cleaning is undertaken: