Safety Elements; Commissioning; Checks Prior To Commissioning - Carrier 50HB Manual

Horizontal package air conditionners
10. S
AFETY ELEMENTS
Low pressure pressostat
When connected to the intake compressor, it will stop operating
when the pressure at this point drops below the tare value (caused
by obstructions in the circuit, excessive dirt in the fi lters, fan stop or
ice formation in the evaporator). It disconnects at 2 bar and resets
automatically.
High pressure pressostat
Connected to the compressor discharge, it will stop its operation when
the pressure at that point reaches the setpoint. It disconnects at 42 bar
and it is automatically reactivated.
Magnetothermals for line protection
They are located at the beginning of the power lines of the compressor
and motorfans to protect them.
Main door switch
By using a mechanical device, it impedes access to the electric panel
when the unit is with voltage.
Anti-fi re safety
With the return probe option, the electronic control can activate a safety
anti-fi e that, when the temperature of the air of comeback overcomes
them 60ºC (for defect), the unit stops.
This one will not be able to work again until the temperature does not
descend below 40ºC.
Safety at the compressor
Temperature probe for the discharge from the compressor to protect
the unit with discharge temperatures greater than 135ºC.
Automatic switch in the control circuit
Magnetothermal switch that protects the operation circuit against
continuous surges as well as against high currents of short duration
(short circuits).
14
11. C
OMMISSIONING

Checks prior to commissioning

- It is advisable to make a complete sketch of the installation including
the location of the unit and all the components used. This will be very
helpful for maintenance and repairs to the installation.
- The following must be verifi ed:
• That the electrical power supply remains constant and that it
corresponds to that featured on the unit data plate.
• That the electric installation has been carried out according to the
electric wiring diagram provided with the unit (consult the chapter
on "Checking before commissioning").
• The correct connection of the sensors supplied with the unit.
• That they are no cables close to heat sources.
- Once the above verifi cations have been carried out, the control circuit
is supplied with voltage by the automatic control switch. It is necessary
to leave the compressor crankcase heater with voltage for 24 hours
before starting the compressor.
WICHTIG: WIEDERBEHEIZUNG DER
OLWANNE
BEIDER ERSTEN INBETRIEBSETRUNZ ORDER NACH EINER
LANGEN STROMUNTER-BRECHUNG BRINGEN SIE DIE
MASCHINE UNTER SPANNUNG 24 STRUNDERLANG
BEVOR SIE DEN(DIE) KOMPRESSOR(EN) EINSCHALTEN
KOENNEN.
IMPORTANT: CRANKCASE HEATING
FOR THE FIRSTSTART OR AFTER ALONG TIME OUT OF
VOLTAGE PUT THE MACHINE ON LIVE 24 HOURS BEFORE
TO ALLOW THE COMPRESSOR(S) STARTING
IMPORTANT: SURCHAUFFE CARTER D'HUILE
AU PREMIER DÉMARRAGE OU APRÈS UNE ABSCENCE
DE COURANT PROLONGÉE, METTRE LA MACHINE SOUS
T E N S I O N 2 4 H E U R E S A V A N T D ' A U T O R I S E R L E
DÉMARRAGE DU(DES) COMPRESSEUR(S).
IMPORTANTE: RISCALDARE IL CARTER
DELL'OLIO
AL PRIMO AVVIAMENTO U DOPO UNA INTERRUZIONE
PROLUNGATA DELLA ALIMENTAZIONE ELETTRICA,
LASCIARE LA MACCINA SOTTO TENSIONE PER 24 ORE
PRIMA DI AUTORIZZARE L'AVVIAMENTO DEL(DEI)
COMPRESSORE(I).
IMPORTANTE: RECALENTAMIENTO DE
ACEITE DEL CÁRTER
ANTES DEL PRIMER ARRANQUE O DESPUÉS DE UNA
AUSENCIA DE CORRIENTE POR UN LARGO PERIODO DE
TIEMPO, CONVIENE QUE LA UNIDAD ESTÉ CONECTADA
UN MÍNIMO DE 24 HORAS.
- All the models are equipped with a scroll type compressor and have
a phase control relay. Verify that they turn in the correct direction
and, if not, reverse the power wires.
SCROLL COMPRESSOR.
CHECK SENSE OF ROTATION
COMPRESSEUR SCROLL.
VÉRIFIER LE SENS DE ROTATION
COMPRESOR SCROLL.
COMPROBAR SENTIDO DE GIRO