GSi COMPETITOR 2000 Series, Руководство по эксплуатации и обслуживанию

Страница: 32 / 53

32
METERING ROLL SERVICING
SERVICE
This dryer is equipped with SCR
metering roll drive assembly. The
metering rolls are driven by a sepa-
rate DC type electric motor. The
speed of the motor is variable and
is controlled by an electric SCR (sili-
con controlled rectifier) control within
the main control box.
1. SCR speed control : The con-
trol unit dial on the front of the
control box regulates the speed
of the DC motor which drives the
metering rolls.
The markings on the scale from 0 to
999 represent the flow of grain past
the metering rolls as a percent of the
maximum grain discharge rate for
the dryer. The maximum setting of
999 provides a maximum 100% dis-
charge of 1120 BPH for 108, 1400
MAIN CONTROLS
BPH for 110, 1680 BPH for 112,
1960 BPH for 114, 2240 BPH for
116, 2520 BPH for 118, 2800 BPH
for 120, 3080 BPH for 122 and 3640
BPH for 126 model dryers.
Note: When the control is set to the
maximum discharge rate (999), the
metering roll speed should be 17.5
RPM.
2. DC electric motor : The direct
current (DC) motor provides the
drive for the metering roll, and
is located on the front left hand
side of standard model dryers.
The output shaft of the motor
is connected directly to the gear
box assembly.
The DC motor requires no opera-
tional adjustment as it is completely
controlled from the control box.
3. Speed reducer gear box : The
direct drive gear box provides
the required speed reduction,
and transmits power to the me-
tering rolls through a drive chain
arrangement. The gear box
does not require adjustment.
The drive chain should also be
periodically lubricated and
tensioned as necessary.
4. Unload auger time delay : The
delay controls the bottom auger
system and causes the unload
auger (and any connected aux-
iliary unloading conveyors) to
continue operating for the pro-
grammed amount of time, even
after the metering rolls stop.
This feature permits the clean
out of grain within the unload-
ing equipment at the end of all
discharge cycles.
The speed reducer gear box for the metering rolls.