Model Details; Controller Technical Detail - Foster RBC20-60 Service Manual

The controller will determine the temperature to be maintained during the hold phase based on the chilling cycle that has
been completed. If a soft or hard chill has taken place the controller will maintain an air temperature of 2°c.
The hold mode is principally intended as a temporary storage facility offering the operator flexibility until the product can
be unloaded into a longer term storage units at the correct storage temperature. On occasion this hold period may
become extended to operate overnight or to provide emergency refrigeration backup. In such instances defrosting would
automatically occur as necessary.

Model Details.

The RBC 20-60 is capable of blast chilling 60kg of product from +70°c to +3°c in 90 minutes with entry temperature up to
90°c
The cabinet is compatible with the Rational 20 rack GN 1/1 201 trolley.
Refrigerant used is R404A.
The RBC20-60 has two separate refrigeration systems comprising, two condensing units, a twin circuit condenser and a
twin circuit evaporator. (See pages 20 and 21 for assembly details and page 22 for schematic dual circuit refrigeration
layout).
The RBC20-60R has the same refrigeration systems but the condensing units are remotely sited.
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).
The parameter 'Capacity Enable' is set to 'ON' to allow for both condensing units to be running during the chill cycle
therefore maximising the heat extraction from the product. During the 'HOLD' mode with the 'Capacity Enable' set to 'ON'
one compressor will control the temperature throughout unless the temperature exceeds the capacity control limit.
A 1½" BSP drain outlet is fitted in to the base of the cabinet for connection to external drain.
The cabinet is delivered with the legs secured to the base of the cabinet.

Controller Technical Detail

The FCC controller is a three-piece unit made up of the Front Display and Dial Shaft Encoder, Mother Board plus
Evaporator, Food and Air temperature probes. The front display PCB and the CPU/ Switching PCB unit are
interconnected by a ribbon cable. The membrane attached to the front provides an IP rating of IP54 providing a scratch
free wipe clean finish.
The control dial is the method by which the controller is accessed for all requirements. It has three planes of movement,
clockwise, anticlockwise and inwards.
The control dial allows the operator/ engineer to move forward and backwards through various menu selections shown on
the display, and enter a desired programme. The control system will then respond appropriately either commencing the
operating cycle or allowing further configuration.
Part numbers
Item
Controller Mother Board
Controller Shaft Encoder
Controller LCD Display
Air Probe P1
Evaporator Probe P2
Food Probe
Compressor x 2
Condenser Coil
Condenser Fan Assembly
Sight Glass
Drier
Solenoid Valve
Liquid Receiver
LP Switch
HP Switch
High Pressure Thermostat
Evaporator Coil
Expansion Valve
Orifice
Expansion Valve
Evaporator Fan Motor
hinge
Door Gasket
Door Switch
Door Switch Magnet
Door Handle
Description
NTC type. 2.5m
NTC type. 2.5m
5M Length
TAJ4519ZH T 400/50
BC6013/122
S4E300-BP26-30
3/8"
EVR6 32F5219+0
2.5 Bar 0.5 Bar Diff
28 Bar – 3 Bar Diff
KP5 Auto Re-set (set at 18 BAR with a 3 BAR diff.)
BC6013/121
Valve Body TES2-NL68Z34300/68
NO 02 68-2092/68-2072
Solder Adaptor 68-2
W4E420-CP02-66788-4-7320
Edgemount
1406x546MM
Circular (Reed Type)
Circular
Edgemount Latch Kit
2
Part Number
00-555395
00-555396
00-555394
00-555397
00-555397
00-555663
00-555885
01-257300-01
00-555886
15483015
00-555388
15451215
00-555579
00-555387
00-555386
15452109
01-256400-01
15450386
15451104
15450910
00-555375
00-555880
01-256387-01
00-555829
00-555828
00-555881