Donaldson Torit DFO 3-6 Specifications Page 21

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Downflo II Dust Collector
21
panel if the pressure drop reaches the alarm
setpoint. The auxiliary relay can also be used to
activate visual or audible alarms provided by others.
6. Thirty-five feet of plastic tubing is supplied with
the control and must be cut in two sections.
Connect one section of tubing from the control
enclosure’s high-pressure port to the pressure
tap on the dirty-air plenum. Connect the
remaining section of tubing from the control
enclosure’s low-pressure port to the pressure
tap on the clean-air plenum. Additional tubing
can be ordered from your representative.
7. Place the program wire on the solid-state timer
board pin to match the number of solenoid-
valve connections used.
8. Apply power to the control. Set the high- and
low-pressure setpoints to start and stop the
cleaning process. Set the alarm setpoint to
activate the alarm display. See Delta P Control
Calibration on Page 22.
Delta P Control Printed Circuit Board
PS1
5
42 1
side view
autotran
BKT1
C6
R35
U6
L3
L4
L5
C16
C17
C18
R43
R42
R41
R44
R45
R46
C3
C2
Y1
D5
5 4 3 2 1
J2
U1
R50
R51
C8
R27
T36
R37
R38
RA12
U7
U2
1
2
3
4
5
6
7
8
1
2
3
4
5
1
2
3
4
5
6
7
8
RA8
RA7
RA11
ADDRESS
SW6
1
2
3
4
5
6
7
8
C14
R33
R48
R49
low
CP1
D1
D2
CR1
CR2
TB3
Mode
slave
alarm
R47
Q7
J5
7 8 9 10 11 12
hi/lo
control
alarm or
auxiliary
J3
J4
NC
2
3
NC
2
3
prog
disable
alarm
reset
3 4 5 6
R26 R28 R31 R32
R25
R39
R29 R21
R22
R23
C11
C12
TB2
3 2 1
J1
in mm
L1
L2
1 2
TB1
115/230-V
input
W1
W2
W3
115V 230V 115V
UPDOWN
CP4
CP5
CP2
U4
U8
C15
high
Alarm
C5
R34
R16
R15
R19
R14
Cleaning
Alarm
CP3
U3
C4
Q2
Q1
Q3
Q5
Q4
"wg
mm wg
R5
R11
R6
R8
R20
Q8
Q6
R10 R4
R9 R7
LED 1 LED 2
LED 3
LED 1-3
R1
R3
Q10
R13
Q9
R12
R17
R12
R30
C13
C19
C7
VR2
U5
CONN 1
R2
R40
R24
TB4
sensor out
13
+
14
GND
C10
VR1
in
out
F1
D3 D4
C1
C9
7
9
10
12
T1
1
3
4
6
A144C
M9805-02-08 REV.
PJ1
1
2
3
4
5
alarm
disable
units
"wg
or
daPA
voltage jumpers
power connection
sensor
out
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