Bunn U3 Operating & Service Manual page 25

SERVICE (cont.)
RELAY (BREWERS W/BREW LOCKOUT)
Removal and Replacement:
1. Disconnect the wires from the relay.
2. For 120/208V, 120/240V, 208V, 380V, 440V and
240V models prior to #U300004095 remove the
#6-32 screw securing the relay to the relay mount-
ing bracket. For 230V models #U300004095 and
up, remove the two screws securing the relay to
the relay mounting bracket.
3. Remove relay and discard.
4. For 120/208V,120/240V, 208V, 380V, 440V and
240V models prior to #U300004095, install new
relay on relay mounting bracket and secure with
a #6-32 screw. For 230V models #U300004095
and up, install new relay on relay mounting bracket
and secure with two #6-32 screws.
5. Refer to Fig. 19 and reconnect the wires.
BLU from
Start Switch
RED from
Main Harness
120/208V, 120/240V, 208V, 380V, 440V AND 240V
MODELS PRIOR TO #U300004095
BLK from
Main Harness
230V MODELS #U300004095 AND UP
FIG.19 RELAY TERMINALS
Page 25
BLU from
Brew Timer
3
2
6
1
5
9
4
8
B
7
BLK to Control
A
Thermostat
BLU to Start
Switch
BLU from
Brew Timer
3
2
6
1
5
9
4
8
RED to Control
B
7
Thermostat
A
10060 080900
P1739