Bulletin 100-50-9.1 – Page 117
is reached. The drain time delay allows water to drip off
the coil and exit the case via the drain before resuming
refrigeration. During this period, the EEV remains closed
and the EEPR opens to the user selected EEPR Percent
Open during drain parameter to bleed excess pressure to
the suction header. In accordance with its configuration,
when resuming refrigeration, the Solenoid and EEV opens
while leaving the fans ON/OFF. If the fans are programmed
to be off during defrost, they are turned on when the coil
temperature reaches the fan delay temperature or the
maximum fan delay time is reached. The fan delay allows
any remaining liquid to re-freeze prior to turning on fans.
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