Foster RBC20-60 User Manual download pdf (Page 21)

Technical Data

RBC20-60

RBC20-60R

Nominal Chilling Capacity 60Kg

60Kg

Duty @ -15°C 3800w

3800w

Fans 3

Evaporating Temperature -15°C

-15°C

HP Switch Setting

Refrigerant Control TEV

TEV

Refrigerant R404a

R404a

Refrigerant Quantity

System 1 1900grms

System 2 1900grms

Electrical Supply 400/3/50 – 16amp

230/1/50 13 amp (Fans & Defrost)

Total Heat Rejection 1500w

Important Note

There are two refrigeration systems on this model

Refrigerant used is R404A.

The RBC20-60 has two separate refrigeration systems comprising, two condensing units, a twin circuit condenser (see

below) and a twin circuit evaporator. (See page 21for assembly details and page 22 for schematic dual circuit refrigeration

layout).

The condenser fan on system 2 is controlled by the HP switch, which is set at 18 BAR with a 3 BAR diff.

The RBC20-60R has the same refrigeration systems but the condensing units are remotely sited.

The parameter ‘Capacity Enable’ is set to ‘AUTO’ to allow for both condensing units to be running at the start of the chill

cycle therefore maximising the heat extraction from the product. On reaching ‘HOLD’ one of the condensing units will shut

down. During the ‘HOLD’ mode one compressor will control the temperature throughout unless the temperature exceeds

the capacity control limit.

Refrigerant control is by expansion valve to control the correct amount of refrigerant required to meet the demand of the

evaporator. (See page 21 for assembly detail).

Expansion Valve Setting (Superheat)

Adjust the superheat by turning the expansion valve setting spindle anti clockwise until back seated then turn the setting

spindle clockwise THREE FULL TURNS IN.

CONDENSING UNIT ASSEMBLY RBC20-60

System 2

System 1

HP Switch

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Foster RBC20-60 User Manual Page 21