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L1
L2
N
GROUND LUG
GROUND
WIRE
N
208-240V
120V 120V
Electrical Connection
1. Verify that the actual voltage at the electrical service connection is compatible with the specifications on the
brewer’s serial number label. Make sure the electrical service includes neutral.
2. The temperature and water tank fill level are pre-set at the factory. There is no need to turn off the heaters
during the installation process. The heaters are disabled by the control board until the tank is full of water. The
heating process will start automatically when the tank has filled.
3. A terminal block is provided for connecting the incoming power wires. Consult local codes to determine if a
cord and plug can be installed, or if the unit must be hard wired.
4. A fused disconnect switch or circuit breaker on the incoming power line must be conveniently located near the
brewer, and its location and markings known to the operators.
5. The body of the brewer must be grounded to a suitable building ground.
A ground lug is provided in the brewer next to the power terminal block.
Use only 10 gauge copper wire for grounding.
6. Electrical connections must be secured in-place within the unit to meet
national and local standards.
7. Connect the incoming power wires to the terminal block in accordance with applicable codes.
CBS-2051e
The CBS-2052e and CBS-2052e20 are shipped from the factory configured for either single phase or three
phase operation, depending on the version that was ordered. A tag attached to the terminal block will indicate
which way the unit was configured.
Notice: The following conversion should be performed only by a qualified beverage equipment
service technician or electrician.
For brewers manufactured before August, 2005:
To change the configuration, arrange the heater wires as shown below. Make sure that all connections are
tight. These instructions are also located on the inside of the lower cover.
GROUND
LUG
GROUND
WIRE
L1
L2
L3
N
120V
N
208-240V
NOT
USED
1 & 2
4 & 5
3 & 6
HEATER WIRES
CBS-2052e
SINGLE PHASE
CONFIGURATION
120/208-240 VAC
3 wires + ground
GROUND
LUG
GROUND
WIRE
120V
N
208-240V 208-240V
208-240V
1 & 2 3 & 4
5 & 6
HEATER WIRES
CBS-2052e
THREE PHASE
CONFIGURATION
120/208-240 VAC
4 wires + ground
L1
L2
L3
N
Incoming Power: Connect wires to L1, L2, N, Ground
Heater Wires: Connect wires 1 & 2 to L1
Connect wires 4 & 5 to L2
Connect wires 3 & 6 to L3
Incoming Power: Connect wires to L1, L2, L3, N, Grnd
Heater Wires: Connect wires 1 & 2 to L1
Connect wires 3 & 4 to L2
Connect wires 5 & 6 to L3
For brewers manufactured after August 1, 2005:
A jumper wire with instruction tag is provided (pictured at right).
Single Phase: Connect the jumper to L2 and L3.
Connect incoming wires to L1, L2, N, ground.
Three Phase: Do not use the jumper.
Connect wires to L1, L2, L3, N, ground.
When not used, the jumper should remain secured inside the
brewer for future use.
Warning: To prevent
electrical shock, this
unit must be properly
grounded.