Precautions; Before Installation; At Installation; After Installation - Panasonic MDF-DU702VH Service Manual

PRECAUTIONS

Before installation

●Liquid CO
cylinder should be a siphon type cylinder
2
●Only liquid CO
can be used for this system. Never use other kinds of gases.
2
●Liquid CO
loses its cooling capacity when the ambient temperature is above +31℃. Do not install the
2
liquid CO cylinder in a place exposed to direct sunlight or near heat-emitting appliances such as stoves
2
and heaters. The back-up time per 1 liquid CO
liquid CO cylinder in the cool location.
2
●Liquid CO
cylinder should be installed in a special cylinder
2
stand (see figure). Never install the cylinder without the stand. If
you have difficulty in obtaining the stand, contact your dealer.
●The length of time in which a 30kg liquid CO
maintain a temperature of -70℃ is shown in the another sheet
"Ambient Temperature vs. -70℃ Holding Time of Liquid CO
cylinder (30kg)".
Install the required number of cylinders according to the customer'
s desired back-up time.
ambient temp.(℃)
●Before installation, tell the customer about cylinder storage and exchange procedures at the time of cylinder
inspection according to high-pressure gas regulations.

At installation

●The connecting pipe between the liquid CO
backup cooling kit should not be installed in a place where it may
be bumped in a passage.
●Use the connecting pipe provided with the backup cooling kit.
Run the connecting pipe in a coil or U-bend formation to act as a
cushion (see figure).
●Do not let foreign particles or water get into the pipe or joints.

After installation

●Check that liquid CO
2
testing procedure.
●Conduct a leakage test of the liquid CO
cylinder depends on the ambient temperature. Install a
2
cylinder can
2
ambient temp.(℃)
cylinder and the
2
is injected into the freezer chamber. Refer to the "Injection Test" for an explanation of the
cylinder and connecting area.
2
2
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