Donaldson Torit RFWP - Page 52

49
Donaldson Company, Inc.
Motor Starters
PD Blower
Fan
Cleaning Drive
filter timer
clean down relay. 2.11
off delay. 5-10 min. 4
*
solenoid valve
rotary valve if used
PD blower
drive motor
fan
Valve
Disconnect
1FU
2FU
3FU
230 460
60/3
T1
T2
T3
T1
T2
T3
T1
T2
T3
T1
T2
T3
230V
120V
H1
H2
H3
H4
X1
1 2
X2
STOP
FUSE
START
1CR
1CR-1
1TR-1 3
3P O L
3P O L
3P O L
3P O L
1CR-2 MS1
MS3
MS1
MS4
MS2
G
G
5
4
(Off
Delay)
1TR
L1
MS1
MS1
O.L.
O.L.
O.L.
O.L.MS4
MS4
MS3
MS3
MS2
MS2
L2
L3
*1 TR-1 allows cleaning system to operate 5-10 minutes
after fan stops
Use wiring diagram provided with collector, if provided
L1
L2
1
2
3
4
5
6
7
8
9
10
11
12
Collector Wiring
Input
102-132V/50-60Hz/1Ph
Output Solenoids
2-3A max per channel
Pulse ON Time
Factory set at 100-milliseconds, or 1/10-second.
Do not adjust pulse ON time
unless the proper test equipment
is available. Too much or too little ON time can
cause shortened lter life.
Pulse OFF Time
Factory set at 10-seconds, the OFF time must be eld adjusted
such that the pressure at the air reservoir peaks at 8-9 psig
just before the next pulse. Make nal adjustments by observing
the LOAD ON light ashing on the timer.
Open the valve to the air
reservoir gauge only when
adjusting OFF time.
Operating Temperature Range
-20° F to 130° F
Solenoid Valves
120V/60 Hz intermittent duty @ 20.9 watts
Interlocking
To ensure proper operation of the system the main blower
should not start unless the cleaning mechanism, positive-
displacement blower, and dust removal system are all
operating. It is recommended that an interlock device is
installed between these motors. Failure of interlocked devices
should generally not shut down the main blower, but should
activate an alarm system, if available. Failure of either a rotary
airlock or screw conveyor with separate drives should shut
down all other drives and alarm the operator. This will avoid
lling the collector with dust.
Time Delay, Start-Up
Starting motors at 3-second intervals is recommended to
minimize inrush current and to allow interlocking.
Time Delay, Shut-Down
A sequenced shut down approach is recommended for optimal
performance of the collector. After the main blower shuts
down, the remaining components should continue to run for
several minutes to empty the hopper and dust removal system
of all dust that drops from the lter bags after the primary
airow stops.