Dri-Eaz Dragon K85 Mobile Owner's Manual - Page 16

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Replacement Sensor - Order
Part No. 1309007-044
SPECIFICATIONS
The 1309007-044 sensor is a negative temperature coefficient
(NTC) thermistor sensor. The sensor resistance decreases with
temperature increase. It is .25 x 1.94 long with 8 feet #22 AWG
cable. The thermistor has a reference resistance of 30,000 ohms
at 77°F (25°C).
IMPORTANT
The schematic drawings and other information included in these instruc-
tions are for the purpose of illustration and general reference only. Ranco
assumes no responsibility for any unconventional application of this
control, unless such application has been approved in writing by Ranco.
Deg. C.
Deg. F .
RES. Nom.
-40
-40
1,010,000
-30
-22
531,000
-20
-4
291,200
-10
14
166,000
0
32
97,960
10
50
59,700
20
68
37,470
25
77
30,000
30
86
24,170
40
104
15,980
50
122
10,810
60
140
7,464
70
158
5,200
80
176
3,774
90
194
2,753
100
212
2,036
110
230
1,531
Figure 10 :
Resistance vs Temperature of 1309007-044. Sensor including 8 foot cable.
Ranco North America
8115 U.S. Rt. 42 North
Plain City, Ohio 43064
An Invensys Company
6
R A N C O
I N S T A L L A T I O N
ETC SINGLE STAGE ELECTRONIC TEMPERATURE CONTROL
PRODUCT DESCRIPTION
The Ranco ETC is a microprocessor-based
family of electronic temperature controls, de-
signed to provide on/off control for commercial
heating, cooling, air conditioning and refrigera-
tion. The ETC is equipped with a liquid crystal
display (LCD) that provides a constant readout
of the sensed temperature, and a touch keypad
that allows the user to easily and accurately
select the set point temperature, differential and
heating/cooling mode of the operation. Models
are available that operate on either line voltage
(120/208/240 VAC) or low voltage (24VAC).
APPLICATIONS
With its wide temperature
setpoint range and selectable
heating or cooling modes, the
ETC can be used for a wide variety of
applications including refrigerated display
cases, walk-in and reach-in refrigerators, milk coolers, refrigerated
warehouses, chillers, beer and beverage coolers, tank heating, space
and return air temperature control and condenser fan cycling.
FEATURES
•
Wide setpoint temperature range (-30°F to 220°F) and
differential adjustment (1°F to 30°F).
•
Simple keypad programming of setpoint temperature,
differential and cooling/heating modes.
•
LCD readout of sensor temperature, control settings,
relay status and onboard diagnostics.
•
Remote temperature sensing up to 400 feet.
•
SPDT output relay.
•
User-selectable Fahrenheit/Celsius scales.
•
Lockout switch to prevent tampering by unauthorized
personnel.
•
Choice of line voltage and low voltage models available.
•
Optional 0 to 10 volt analog output available for remote
temperature indication.
SPECIFICATIONS
Input Voltage
120 or 208/240 VAC (24 VAC optional), 50/60 Hz
Temperature Range
-30°F to 220°F
Differential Range
1°F to 30°F
Switch Action
SPDT
Sensor
Thermistor, 1.94 in. long x 0.25 in. diameter with
8 ft. cable
Power Consumption
120/208/240 VAC: 100 Milliamps
24 VAC: 2 - 6 VA
I N S T R U C T I O N S
Form No. 7515003-001 Rev. C
Relay Electrical Ratings
120V
208/240V
NO Contact
Full-load amps
16 A
Locked rotor amps
96 A
Resistive amps
15 A
Horsepower
1 hp
NC Contact
Full-load amps
5.8 A
Locked rotor amps
34.8 A
Resistive amps
5.8 A
Horsepower
1/4 hp
Pilot Duty: 125 VA at 120/208/240 VAC
Control Ambient Temperature
Operating
-20°F to 140°F (-29°C to 60°C)
Storage
-40°F to 176°F (-40°C to 80°C)
Ambient Humidity
0 to 95%, RH, Non-condensing
0 to 10 V Output Impedance
1K
Enclosure
NEMA 1, Plastic
Agency Approvals
UL Listed, File E94419, Guide XAPX
CSA Certified, File LR68340, Class 4813 02
ETC ORDERING INFORMATION
Input
No. of
Code Number
Voltage
Stages
ETC-111000-000
120/240
1
ETC-111100-000
120/240
1
ETC-112000-000
24
1
ETC-112100-000
24
1
OPERATION
Liquid Crystal Display (LCD)
The LCD display provides a constant readout of the sensor temperature and
indicates if the output relay is energized. When the S1 annunciator is
constantly illuminated during operation, the relay is energized. The display is
also used in conjunction with the keypad to allow the user to adjust the setpoint
temperature, differential and heating/cooling modes.
Control Setup
The temperature setpoint refers to the temperature at which the normally open
(NO) contacts of the output relay will open. Determine the load (s) to be
controlled and the operating mode required, cooling or heating. Refer to
Figure 1 for a visual representation.
•
When the cooling mode is chosen, the differential is above the setpoint.
The relay will de-energize as the temperature falls to the setpoint.
•
When the heating mode is chosen, the differential is below the setpoint.
The relay will de-energize as the temperature rises to the setpoint.
1
8 A
48 A
8 A
1 hp
2.9 A
17.4 A
2.9 A
1/4 hp
0 - 10 V
Output
No
Yes
No
Yes