♦ Add a schrader valve to the
smaller tube.
♦ If it only drops a small amount
this does not mean that you
have an internal leak but that
the gas in the cabinet is cooler
and has reduced its pressure
because of this.
♦ Attach the high side gauge of a
compound gauge to the valve
and pressurize the cabinet with
nitrogen or otherwise suitable
gas.
♦ If the cabinet has an internal
leak contact the nearest
Hussmann distributor or the
factory to receive authorization
to return the cabinet to the
factory.
♦ There should be at least 300 psi
on the system.
♦ Mark the pressure on the gauge
and leave it, returning 24 hours
later.
NO CABINET WILL BE
ACCEPTED AT THE FACTORY
WITHOUT A LETTER OF
AUTHORIZATION FOR
RETURN.
♦ Note the pressure. If it has
fallen more than 150-200 psi
then the system may have an
internal leak.
24
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