R290 (Propane) is refrigerant grade propane with high purity and low Global Warming Potential (GWP).
Propane is highly flammable. Please observe caution and follow the safety maintenance requirement when servicing
equipment with R290.
Before the maintenance of R290 refrigeration products, safety inspection must be carried out to ensure that the risk of
ignition is minimized.
The maintenance area must be ventilated.
Fire extinguishing equipment (dry powder or carbon dioxide fire extinguisher)
shall be provided in the maintenance site
There should be enough space in the maintenance site. Open fire, electric spark and ≥470 ℃ heat source are
prohibited within 2m.
The key to maintaining your cabinets
SERVICING GUIDELINES
R290 REFRIGERANT
An electrical wiring diagram can be located under the hood of electrical box
LED driver and electrics can be located in the hood or electrical box
To access fans for service or repair:
Remove deck tray in cabinets and lift out
Remove stainless cover with screw drivers
This will allow access to fans and coil
Operation ambinet temperature ( Climate 4 ): 43 °C
ALWAYS DISCONNECT CABINET BEFORE SERVICING
Electrical diagrams
Exploded spare parts
Refrigerated parameters
Can be found on our website:
www.cossiga.com
Disconnect the power supply
to appliance.
Connect the compressor equipped
with the
venting hose to the piercing valves.
Discharge the R290 refrigerant into
a safe place or a refrigerant
recovery bottle.
Once the charge is removed, add
high-purity nitrogen through the
system for 10 seconds.
Purge nitrogen through the system
at 70 to 140 hPa, vacuum until
unit holds 40pa.
Vacuumize it with a vacuum pump for
15-20min before welding the
replacement parts of R290
refrigeration
