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Idiomas disponibles
Idiomas disponibles
All switch positions are shown in refrigeration cycle operation, and change position upon initiation of a defrost.
1
8145 Replacement
Mode A - No Label Required
3
1
2
4
F
L1
THERMOSTAT
COMPRESSOR
OR
LINE
DEFROST
SOLENOID VALVE
OR
HEATER
CONTACTOR COIL
L2
DEFAULT (Out of the Box)
4
8047 Replacement–Double Pole Switching
Mode B with 8047 Terminal Block Label Applied
1
3
4
N
L1
SOLENOID
VALVE
DEFROST
OR
HEATER
CONTACTOR
L2
7
8141 Replacement
Mode A with 8141 Terminal Block Label Applied
N
2
1
3
4
THERMOSTAT
L1
COMPRESSOR
FAN
OR
SOLENOID VALVE
DEFROST
OR
HEATER
CONTACTOR COIL
L2
10
8245 Replacement
Mode A with 8245 Terminal Block Label Applied
2
3
1-N
4
F
L1
THERMOSTAT
COMPRESSOR
DEFROST
LINE
OR
SOLENOID VALVE
HEATER
OR
CONTACTOR COIL
L2
REPLACING EXISTING DEFROST TIMERS
The DTAV40 will replace all models of Paragon 8040, 8140,8240 Series or Precision 6040, 6140 Series and all prior Grasslin Defrost Timer models.
TERMINAL IDENTIFICATION:
The standard DTAV40 terminal identification is identical to the Paragon 8145 with the addition of the "F" terminal. Terminal identification labels are provided for the other models to be
placed over the printed numbers on the printed circuit board. From the table above, select the proper label, apply to printed circuit board and wire per the original wiring or the wiring
diagrams indicated.
"F" TERMINAL:
The DTAV40 contains a normally closed contact between terminals 1 and F. This terminal may be used to switch the fans off during a defrost rather than terminals 2 and 4. For hot gas
defrost applications, with the mode switch set to position "B", the fans may be connected to terminal "F".
8143 Replacement: When replacing a Paragon 8143, wire the termination thermostat to terminal X of the DTAV40 (with the 8143 label attached), and the adjacent blank terminal. The
Paragon timers are wired to terminal X and the blank terminal. If the termination thermostat is wired to terminal N of the DTAV40 temperature termination will not occur and may result
in burnout of the DTAV40. See wiring diagrams 8 & 9.
8240 SERIES REPLACEMENT: The DTAV40 may be used to replace the Paragon 8240 series defrost timers with integral pressure termination by the addition of a remote pressure
switch wired to terminals Xp and p of the DTAV40 (with an 8240 series terminal label applied). There must be no external voltage connected to the pressure switch. Set pressure
switch cut-in to the same value as set on the Paragon defrost timer being replaced. Set cut-out 6 to 14 psi below cut-in. See wiring diagrams 10 and 3.
DTAV40 - TYPICAL WIRING DIAGRAMS
2
8041 Replacement
Mode A with 8041 Terminal Block Label Applied
CONTROL
TERMINATE
POWER
INPUT
N
N
X
L1
TERMINATION
FAN
THERMOSTAT
FAN
MOTOR
W/FAN DELAY
L2
5
8045 Replacement
Mode A with 8045 Terminal Block Label Applied
CONTROL
TERMINATE
POWER
INPUT
2
2
8047
F
LABEL
L1
LINE
L2
8
8143 Replacement
Mode B with 8143 Terminal Block Label Applied
CONTROL
TERMINATE
POWER
INPUT
1
X
8141
LABEL
L1
TERMINATION
THERMOSTAT
W/FAN DELAY
FAN
VALVE
L2
Paragon
CONTROL
TERMINATE
Model
POWER
INPUT
TIME INITIATED, TIME TERMINATED
8045
p
8041
Xp
8245
LABEL
8047
TIME INITIATED, REMOTE TEMPERATURE OR PRESSURE TERMINATED
FAN
PRESSURE
8145
MOTOR
SWITCH
8141
8143
TIME INITIATED, PRESSURE TERMINATED
(Separate Pressure Switch Required - see instructions)
8245
8247
APPLICATION
The DTAV40 Defrost Timer is equivalent in function, ter-
minal identification (with appropriate terminal block label
attached), and wiring to the Paragon 8140 and Precision
6140 series Defrost Timers. (See Note 1) The DTAV40
may also be used to replace Paragon 8040 and
Precision 6040 series time terminated defrost timers.
With the addition of a remote pressure switch, the
DTAV40 can replace the Paragon 8240 series pressure
terminated defrost timers. Defrosts will be initiated by
programming the timer, which will accept from 1 to over
24 defrost initiation settings per day at 15 minute
intervals (8:00AM, 8:15AM, 8:30AM, etc) Defrost
duration is settable in 15 minute intervals from a
minimum of 15 minutes up to several hours (15 minutes,
etc.) The defrost duration determines the termination
time. In standard configuration, the contacts between
terminals 1 and 3 are normally open and closed during
a defrost to energize defrost heaters; the contacts be-
CONTROL
TERMINATE
POWER
INPUT
2
1
3
4
X
THERMOSTAT
COMPRESSOR
OR
SOLENOID VALVE
DEFROST
OR
CONTACTOR COIL
HEATER
CONTROL
TERMINATE
POWER
INPUT
3
2
4
X
1-N
THERMOSTAT
FAN
MOTOR
COMPRESSOR
DEFROST
OR
SOLENOID VALVE
HEATER
OR
CONTACTOR COIL
CONTROL
TERMINATE
POWER
INPUT
3
4
2
X
N
HOT
GAS
CONNECT ACROSS
COMPRESSOR
THERMOSTAT
WIRING LEGENDS
Precision
GRASSLIN
S1 Mode
Model
Model
Selector
6045
DTAV40
A
6041
DTAV40
A
6047
DTAV40
B
6145
DTAV40
A
6141
DTAV40
A
---
DTAV40
B
---
DTAV40
A
---
DTAV40
B
3
8247 Replacement–Double Pole Switching
Mode B with 8247 Terminal Block Label Applied
3
N
1
8041
LABEL
L1
SOLENOID
VALVE
DEFROST
OR
HEATER
CONTACTOR
L2
6
120V Fan & Defrost Heater; 240V Compressor
Mode A - No Label Required
F
3
1
8045
LABEL
L1
DEFROST
FAN
HEATER
N
L2
SOLENOID VALVE
CONTACTOR COIL
9
8143 Replacement–Double Pole Switching
Mode B with 8143 Terminal Block Label Applied
3
1
N
8143
LABEL
L1
TERMINATION
THERMOSTAT
SOLENOID
VALVE
W/FAN DELAY
DEFROST
OR
HEATER
CONTACTOR
L2
Terminal
Typical
Ident.
Wiring
Terminal Layout
Label
Diagram
8045
5
F
3 1-N
2
2
8041
N
1
3
2
4
N
1
3
4
8047
F
3
1
2
1, 6
None
N
7
1
3
2
8141
8, 9
1
N
3
4
8143
See Note 1
F
3 1-N
2
10
8245
3
N
1
3
2
8247
temperature switch is used with it's normally closed
contacts wired to the fans thereby delaying the fans
from coming on until the coil temperature has dropped
back to below freezing. In most applications, the con-
tacts at terminals 2 and 4 are normally closed with
S1 in "A" position and control the fans and refrigera-
tion equipment or compressor. For hot gas defrost, or
for double pole switching, contacts 2 and 4 may be
configured as normally open by selecting mode "B."
Refer to wiring diagrams 1 thru 10 for additional detail.
"F" Terminal:
The DTAV40 contains a normally closed contact
between terminals 1 and F. This terminal may be used
to switch the fans off during a defrost rather than ter-
minals 2 and 4. For hot gas defrost applications, with
the mode switch set to position "B", the fans may be
connected to terminal "F."
p
2
4
Xp
8247
LABEL
PRESSURE
SWITCH
CONTROL
TERMINATE
POWER
INPUT
2
4
N
X
THERMOSTAT
TERMINATION
THERMOSTAT
W/FAN
DELAY
COMPRESSOR
OR
OR
CONTROL
TERMINATE
POWER
INPUT
4
2
X
8143
LABEL
TERMINATION
THERMOSTAT
4
X
4
X
2
2
N X
4
4
X
2
X
4
Xp
p
p
4
Xp
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