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Examples of hot gas valve inlet/compressor

discharge line temperature comparison

Findings Comments

The inlet of the hot gas

valve is cool enough to

touch and the

compressor discharge

line is hot.

This is normal as the discharge

line should always be too hot to

touch and the hot gas valve inlet,

although too hot to touch during

harvest, should be cool enough

to touch after 5 minutes into the

freeze cycle.

The inlet of the hot gas

valve is hot and

approaches the

temperature of a hot

compressor discharge

line.

This is an indication something is

wrong, as the hot gas valve inlet

did not cool down during the

freeze cycle. If the compressor

dome is also entirely hot, the

problem is not a hot gas valve

leaking, but rather something

causing the compressor (and the

entire ice machine) to get hot.

Both the inlet of the hot

gas valve and the

compressor discharge

line are cool enough to

touch.

This is an indication something is

wrong, causing the compressor

discharge line to be cool to the

touch. This is not caused by a hot

gas valve leaking.

Manitowoc UG020A Technician's Handbook

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