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We reserve the right to make changes without any prior notice.
Translation from original instructions
7.2.2 Functional tests
With the starting of the unit, a few seconds after the starting of the pump, if managed by the control, the compressors will
start according to the request of the thermoregulation.
After a few hours of operation of the compressors, check that the liquid sight glass has a green ring: if it is yellow, there is
moisture in the circuit. In this case, the circuit must be dried by qualified authorised personnel.
Check that bubbles do not appear at the liquid sight glass. The continuous passage of bubbles can indicate there is insuffi-
cient refrigerant and it needs to be topped up. In this case, check that the subcooling value is at least 5°C. But the presence
of a few bubbles is allowed during transients.
The end user is required to keep a register of the unit (not supplied), which will allow a record to be kept of the work carri-
ed out on the unit. This will make it easier to appropriately organize the work to facilitate the checks and the prevention of
malfunctions.
State the following in the register: the type of refrigerant, the date and type of work done (routine maintenance or repair),
description of the work with any parts replaced, measures implemented, the operator who carried out the work and his
qualification.
