Carrier 50EH 1100, Инструкции по установке, эксплуатации и обслуживанию, Страница: 28 / 36

28
13 - COMMISSIONING
13.2 Possible problems at commissioning
All indications given in this manual must be respected and
complied with to guarantee a correct operation of the units.
Next, several possible operation problems are stated which
could happen if the conditions of the commissioning are not
appropriate.
● Air fl ow lack: very high diff erences between inlet and outlet
temperatures, originated by a high pressure drop in the ducts,
or by other causes that impede the correct circulation.
● Air recirculation in the unit, originated by some obstacle in the
air aspiration or outlet.
● Noise problems because of excessive air fl ow in the grille.
● Water overfl owing to the pan problems, originated by an
excessive fl ow, an incorrect siphon installation or because a
defective unit level.
● Refrigerant circuit humidity problem, because of an incorrect
vacuum realization.
13.3 Operational checks
Check the unit operation by verifying the electronic control and
the safety devices.
It is also recommendable to create a report, taking note of the
date, which includes the following information:
● the nominal voltage,
● current absorbed by the compressors, fans and other electrical
components,
● signifi cant temperatures in the cooling circuit (see attached
table),
● other aspects considered interesting such as alarms detected
by the electronic control of the unit.
The recording of these parameters whilst the unit is running
allows controlling the installation performance and it is the
best possible way to avoid breakdowns since the analysis of
these data makes early detection of anomalies possible or the
provision of the necessary means available to ensure that they
do not take place.
Cooling MODE
Compressor
Suction pressure bar
Suction temperature (1) ºC
Condensation pressure bar
Condensation temperature (2) ºC
Air
condenser
Gas inlet temperature ºC
Liquid outlet temperature (3) ºC
Air inlet temperature ºC
Outdoor temperature ºC
Air outlet temperature ºC
Air
evaporator
Air inlet temperature ºC
Air outlet temperature ºC
Liquid inlet temperature ºC
Evaporation outlet temperature (4) ºC
Subcooling (2) - (3) ºC
Overheating (4) - (1) ºC
Heating MODE
Compressor
Suction pressure bar
Suction temperature (1) ºC
Condensation pressure bar
Condensation temperature (2) ºC
Air
evaporator
Liquid inlet temperature ºC
Gas outlet temperature (4) ºC
Air inlet temperature ºC
Outdoor temperature ºC
Air outlet temperature ºC
Air
condenser
Air inlet temperature ºC
Air outlet temperature ºC
Gas inlet temperature ºC
Liquid outlet temperature (3) ºC
Subcooling (2) - (3) ºC
Overheating (4) - (1) ºC
Operating readings