Bunn FPG-2 Manual De Usuario

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46
SERVICE (Cont.)
Timer (Model LPG-2E)
P1061
Location:
 
The timer is located inside the hopper housing just 
behind the left solenoid.
Test Procedure:
1.  Disconnect grinder from the power source.
2.   Insert the leads of a voltmeter set to read at least 
120 volts AC, along side the red wire (terminal 8) 
and the white wire (terminal 2) of the harness plug. 
Place the Off/On/Start switch in the “ON” center 
position. Connect the grinder to the power source. 
The indication must be 120 volts AC.
3.  Disconnect the grinder from the power source.
If voltage is present as described, proceed to step 
#4.
If voltage is not present as described, refer to the wiring 
diagram and check the grinder wiring harness.
4.  Place the hopper selector switch in the left posi-
tion.
5.  Insert the leads of a voltmeter set to read at least 
120 volts AC, along side the red wire (terminal 8) 
and the orange wire (terminal 10) of the harness 
plug. Place the Off/On/Start switch in the “START” 
lower position. Connect the grinder to the power 
source. The indication must be 120 volts AC for the 
set gate time and return to 0 volts.
6.  Disconnect the grinder from the power source.
FIG. 48 TIMER
If voltage is present as described, proceed to step 
#7.
If voltage is not present as described, replace the 
timer.
7.   Place the hopper selector switch in the right posi-
tion.
8.  Insert the leads of a voltmeter set to read at least 
120 volts AC, along side the red wire (terminal 8) 
and the violet wire (terminal 9) of the harness plug. 
Place the Off/On/Start switch in the “START” lower 
position. Connect the grinder to the power source. 
The indication must be 120 volts AC for the set gate 
time and return to 0 volts.
9.  Disconnect the grinder from the power source.
If voltage is present as described, proceed to 
step#10.
If voltage is not present as described, replace the 
timer.
10. Insert the positive (+) lead of a volt meter set to read 
at least 120 volts DC, along side the black wire (ter-
minal 7) of the harness plug and insert the negative 
(-) lead along side the white/black wire (terminal 6) 
of the harness plug. Place the Off/On/Start switch 
in the “START” lower position. Connect the grinder 
to the power source. The indication must be 120 
volts DC for the set gate time plus clean out time 
and return to 0 volts.
If voltage is present as described the timer is operating 
properly.
If Voltage is not present as described, replace the 
timer.
Removal and Replacement:
1.  Disconnect the main wiring harness plug from the 
terminal block on the timer.
2.  Remove the two timer dial knobs located on the 
rear panel of the grinder.
3.  Remove nut and internal tooth lockwasher securing 
dials to the rear panel.
4.   Loosen the two #8-32 pan head screws securing 
the timer and timer mounting bracket to the motor 
support plate.
41545 122209