Glas-Col LimiTrol 104A PC512 User manual

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user instructions 711 HULMAN STREET
PO BOX 2128
TERRE HAUTE, IN 47802
812-235-6167
FAX [phone]
Instruction Notes for LimiTrol
104A PC512 & 104A PC524
General Description
The LimiTrol is an analog high-limit overtemperature control with digital display of
setpoint. Operation is stable in ambient temperature from 32 to 130 degrees Fahrenheit.
Control Features
1. On/Off switch
2. 7.5 amp electromechanical relay output
3. Calibration in C.
4. Temperature range of -210 to 1038 degrees C.
5. Isolation of sensor and circuitry from line and load.

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How to Setup and Operate
First connect the heater load (7.5 amps or less) and the thermocouple plug to the load and
thermocouple receptacles on the rear of the control. Next, plug the control line cord into
the appropriate 3-wire grounded power receptacle.
Push the power switch to the “ON” position to apply power to the control. Press the
set/reset key and turn the control knob to the desired temperature setting. Release the
set/reset key once the desired temperature setting is set. The control will apply power to
the load until the temperature setting is exceeded. Once the setting is exceeded, power
will be removed from the load and a manual reset is required. The control is accurate
within +/- 1% of full scale.
Control Sensor
The LimiTrol is furnished with a TC105 thermocouple. This probe is an Iron-Constantan
thermocouple in a 6” stainless steel sheath. It is furnished with a 48” extension wire with
stainless steel overbraid and a polarized plug. The control may be used with any Type J
thermocouple which has a lead resistance less than 100 ohms.
Proper placement of the thermocouple can eliminate many problems in the total system.
The probe should be placed so that it can detect any temperature change with little
thermal lag. In a process that requires fairly constant heat output, the probe should be
close to the heater. In processes where heat demand is variable, the probe should be close
to the work area. Some experimenting with probe location can be tried to provide
optimum results.
Maintenance
Simple preventative maintenance steps include keeping the controller fairly clean. Protect
it from excessive dirt, oil and corrosion.

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Specifications
Control Mode
-Single input, single output
-Range -210 to 1038 degrees C
Operator Interface
-Control knob
-Digital setpoint display
-ON/OFF switch
-Type J thermocouple receptacle
-3-wire load receptacle
Input
-Type J thermocouple input; grounded or ungrounded
-Automatic cold junction compensation and break protection for sensor.
Output
-7.5 amp, 120 Volt (Fused); 7.5 amp, 240 Volt (Push-to-reset circuit breaker)
Accuracy
- Calibration accuracy: + or - 1% of span.
- Set point accuracy: + or –3% of span maximum.
Power
- 50/60 Hz 10%
-Power consumption less than 4VA plus load.
Operating Environment
-32 to 130 degrees F/ 0 to 55 degrees C; 0 to 90% RH, non-condensing

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Troubleshooting

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Limited Warranty
Glas-Col warrants products of its manufacture to be free from defects in material and
workmanship for one year and agrees to repair or replace without charge any products
found defective upon examination at the factory. With proper care and operation, Glas-
Col products will give long and efficient service. Chemical spillage, overheating,
overloading and general misuse will greatly reduce the service life. Glas-Col is not
responsible for damage due to apparatus due to improper installation or through attempts
to operate the apparatus beyond its rated capacity, intentional or otherwise. Normally
expendable parts are not covered by this warranty.
LIMITATION OF WARRANTIES
APART FROM SUCH WRITTEN STATEMENT OF WARRANTY, THERE ARE
NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, WHICH
EXTEND BEYOND THE DESCRIPTION OF THE PRODUCTS ON THE FACE
HEREOF.
Returns:
For returns, call or fax Customer Service for a Return Goods
Authorization (RGA) number before returning a product.
Reference the RGA number on the shipping box along with a written
description of the problem.
A 20% restocking charge applies for current models of standard products returned for
stock upon receiving inspection.
Glas-Col products are intended only for legal and legitimate purposes in commercial and
industrial settings.
Glas-Col reserves the right to make product refinements without prior notice.
Glas-Col, LLC
711 Hulman Street, P.O. Box 2128, Terre Haute, IN 47802-0128
Phone. [phone], Fax. [phone]
E-mail: [email protected]
Web: www.glascol.com