10
Cooling unit start-up
Monitoring requirements
In order to prevent any damages caused by potential overheating, after startup and power
failures each unit has to be closely monitored for 12 hours. The koolR products are built with an
upper temperature safety limit, that under normal operating conditions will shut down the unit at
72 degrees and the display will blink “AL” (alarm) in case the temperature in the cold room
exceeds this value.
In order to allow the unit to cool down your room after plug-in, to a temperature below 72, the
Alarm mode is disregarded by the controller in the first 12 hours of operation.
Cooling unit USE
Normal Sounds
Your new KoolR may make sounds that your old one didn’t make. Because the sounds are new
to you, you might be concerned about them. Most of the new sounds are normal. Hard surfaces,
such as the flooring and surrounding structures, can make the sounds seem louder. The
following describes the kinds of sounds and what may be making them.
■ Your KoolR is designed to run more efficiently to keep your food items at the desired
temperatures and to minimize energy usage. The high efficiency compressor and fans may
cause your KoolR to run longer than your old one. You may also hear a pulsating or high-pitched
sound from the compressor or fans adjusting to optimize performance.
■ Rattling noises may come from the flow of refrigerant or items stored inside your room.
■ As each cycle ends, you may hear a gurgling sound due to the refrigerant flowing in your
KoolR.
■ You may hear water running into the drain pan.
■ You may hear clicking sounds when the KoolR starts or stops running.
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