Bunn U3 Manuales De Servicio
Page 3
SERVICE (cont.)
PUMP ASSEMBLY
J2
SET
L
OC
K
LO
C
K
SE
T
TL
1
TL
2
TL
3
TL
4
TL
5
J1
FIG.16 PUMP ASSEMBLY
P09.60
Location:
The pump is located on the center rear of the
component bracket.
Test Procedures:
1. Disconnect the brewer from the power source.
. Disconnect the black wire from the black lead on
the pump and the white wire from the black lead
on the pump.
3. With a voltmeter, check the voltage across the
black wire and the white wire. Connect the brewer
to the power source. The indication must be:
a) 10 volts ac for three wire 10/08 volt, 10/40
volt and 380 volt models).
b) 08 volts ac for two or three wire 08 volt
models.
c) 40 volts ac for two or three wire 40 volt
models.
d) 30 volts ac for two wire 30 volt models.
e) 08 or 40 volts ac for four wire 440 volt mod-
els
4. Disconnect the brewer from the power source.
If voltage is present as described, reconnect the wires
to the pump. Install swing spout and position over the
reservoir. Place the ON/OFF in the "ON" (upper) position
and push the start switch and release. If pump does
not run, replace the pump.
If voltage is not present as described, refer to the Wiring
Diagrams and check the brewer wiring harness.
Removal and Replacement (Refer to Fig. 17):
1. Disconnect the wires from the pump assembly.
. Loosen the #8-3 screw () securing the clamp
(3) on the fill tube (1) and slide the clamp (3) up
the fill tube (1).
3. Disengage the fill tube (1) from the pump assembly
(4).
4. Remove the four #8-3 screws (6) securing the
pump assembly (4) to the component bracket
(7).
5. Remove pump assembly (4).
6. Remove pump gasket (5) and inspect, replace if
necessary.
7. Position gasket (5) on component bracket (7).
8. Install new pump assembly (4) on component
bracket (7) and secure with four #8-3 screws
(6).
9. Install fill tube (1) on pump assembly (4).
10. Slide clamp (3) down into position on the fill tube
(1) and tighten screw ().
11. Refer to Fig. 17 and reconnect the wires.
WHI from Brew Timer
BLK from Brew Timer
1
3
4
5
6
7
FIG.17 PUMP INSTALLATION
P1737
10060 080900