Operators Manual Circulating Bath with Programmable Controller 110-119 rev.
Table of Contents Section 1. General Information Section 4. Programming 1.1 Unpacking 4.1 Writing A Program 1.2 Package Contents 4.2 Entering A Program Into Memory 1.3 Description of Circulating Baths 4.3 Running A Program 1.4 Specification Chart Section 2. Set Up Section 5. Maintenance 2.1 Location 5.1 Heater 2.2 Filling the Reservoir 5.2 Pump Motor 2.3 Reservoir Fluids 5.3 Condenser and Air Vents (Refrigeration Units) 2.4 Fluid Connections 5.4 Cleaning 2.5 Pump 5.
Section 1. General Information 1.1 Unpacking Your circulator is shipped in a special carton. Retain the carton and all packing materials until the unit is completely assembled and working properly. Set up and run the unit immediately to confirm proper operation. Beyond one week, your unit may be warranty repaired, but not replaced. If the unit is damaged or does not operate properly, contact the transportation company, file a damage claim and contact the company where your unit was purchased. 1.
1.4 Specification Chart, continued Model TC-101P TC-201P TC-501P Dimensions (in.) (l x w x h) (cm) 143/4 x 81/4 x 14 37.5 x 13.3 x 35.6 131/4 x 141/4 x 131/4 33.7 x 36.2 x 33.7 153/4 x 183/4 x 17 40 x 47.6 x 43.2 Unit Weights 22 lbs (10.0 kg) 28 lbs (12.7 kg) 63 lbs (28.6 kg) Reservoir Volumes 6 liters 10 liters 6 liters Power Requirement 9A @ 115V / 1 / 60Hz (105V - 125V) 4.5A @ 240V / 1 / 50Hz (200V - 260V) 9A @ 115V / 1 / 60Hz (105V - 125V) 4.
You are responsible for proper selection and use of the fluids. Extreme range operation should be avoided. FLUID DESCRIPTION SPECIFIC HEAT @25°C NORMAL RANGE EXTREME RANGE Water 1.00 10°C — 90°C 2°C — 100°C Ethylene Glycol 30% / Water 70% .90 0°C — 95°C -15°C — 107°C Ethylene Glycol 50% / Water 50% .82 -20°C — 100°C -30°C — 100°C Ethylene Glycol 100% .62 50°C — 125°C 0°C — 125°C* Dynalene-HC 50™ .76 -50°C — 60°C -62°C — 60°C DC510 50 cs Silicone Oil .
2.4 Fluid Connections The pump inlet and outlet are threaded with female 1/4 inch NPT to allow use of barbed tubing adapters or hard plumbing. Select tubing and fittings that are compatible with bath fluid and temperature range. If the pump inlet and outlet are not used for external circulation, connect the inlet and outlet pipes with a short length of insulated tubing. Or, plug the pipes with male nylon plugs (supplied) or with metal plugs (not supplied) for high temperature use.
2.6 Open Bath Circulation The DUPLEX pump permits circulation to and from an open bath. Position both baths so that the two fluid levels are at the same elevation. If not, siphoning will occur when the unit is turned off. To prevent this, drain both hoses (pressure and suction). Use the same diameter and length of tubing and type of fittings on both the inlet and outlet connections to obtain a balanced flow.
Section 3. Programmable Controller Check for adequate fluid level in the bath and that aft connections are secure. PARAMETERS-AT-A-GLANCE Contrast Limits Readout Ext Probe Program Tuning °U Cal RS 232 Auto Refrig STANDBY – – – – – – – When first plugged in, before power is turned on, display will read . . . . . . . . . . . . . . . Press power Unit will perform self test and read the firmware’s revision level . . . . . . . . . . . . . . . . . .
3.2 To Change Pump Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SELECT PUMP SPEED HIT 1 THROUGH 5 (also in Section 3.3, System Set Up, FCN 6 - Function Tuning) The five selectable speeds 1. Press , The pump speed menu will appear first. FULL = 2. Select the pump speed number, then press 3. See Section 2.5 Pump for pump specifications. HIGH = MEDIUM = LOW = 3.3 System Set Up Each numerical keypad button permits access to all control parameters.
The Maximum Setpoint Differential (MSD) function provides additional protection against excessive heating of the internal reservoir. Setting Maximum Setpoint Differential (MSD) For External Probe Values from 1 to 30 will be accepted. Outside this range will result in default to previously entered value. Default is set to 10°C External Probe MSD should be set to twice the maximum difference in °C found between the internal and external probes when at the operating temperature.
RTD specifications –Platinum RTD, four wire hookup –100 ohms at 0°C –DIN standard 00385 temperature coefficient Hookup Specifications Use a DB9 Male 9-pin connector with a housing to connecting cable to controller. Connect four wires to pins 6, 7, 8, 9. Shielded wire should be used. Connect the shield to ground on pin 1.
Press If pump speed does not require adjustment, press for FLUID VOLUME, Press Press a third time for SPECIFIC HEAT again for FLOW RATE, — Fluid Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . then FLUID VOLUME 10 LITER(S) once. Enter the total internal and external fluid volume in liters. Default setting is 10 liters. — Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Choose different physical characteristics of fluid, bath sizes, tubing sizes and insulation, or covering schemes as below: CONTROL SYMPTOM MODIFY EXTERNAL FLOW RESTRICTION MODIFY ACTUAL FLUID VOLUME MODIFY INSULATION COVERING OF BATH MODIFY SPECIFIC HEAT OF FLUID Too Slow Increase Diameter Decrease Improve Raise Unstable Increase Diameter Decrease Improve Raise — °U Cal, User Defined Temperature Scale . . . . . . . . . . . . . . . . . . . . . °U = K1 * (°C + K2) + K3 K1 = 001.
— RS232 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Allows selection of 1200 BAUD or 9600 BAUD (default setting). An IBM 9-pin Dsubminiature straight wire serial RS232 communication cable is supplied. Older XT computers only have a 25-pin connectors. If you purchase a 25-pin connector to 9-pin cable or adapter, it must be a “NULL MODEM” type.
Automatic Data Acquisition: Connect serial cable to PC serial port. To enable data acquisition logging mode use command El. The command E0 will disable logging mode. Enable and disable commands are stored in permanent non-volatile memory. When running in logger mode, the unit will send set and actual fluid temperature readings to the RS232 port in an ASCII format. Use download feature in communications software and specify ASCII file format.
Section 4. Programming 4.1 Writing A Program Each program will accept up to 10 different temperature points (number 0 to 9) over adjustable time periods. In each step, setting the temperature point is first, then it is followed by a time. To hold a steady temperature, two different temperature points must be the same. To ramp a temperature, the next temperature point must be different than the last temperature point. To prepare a program, draw a simple graph of times and temps you desire.
Example C Initial temperature is at 25°C 1. Go quickly to 20°C 2. Go quickly to 55°C 3. Repeat 7 times (8 cycles) STEP 0 1 2 3 4 5 6 7 8 9 cycles TEMP 20°C 55°C 55°C 55°C 55°C 55°C 55°C 55°C 55°C 55°C 8 TIME 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 — 4.2 soak 4°C — Entering A Program Into Memory To begin entering a program, press ............................. SELECT PROGRAM 1 OR 2 3 = ESCAPE The controller can store two individual programs.
Section 5. Maintenance 5.1 Heater The heater should be kept clean. If deposits build up on the heater they may be removed by scouring with a non-metallic scour pad, or a plastic pad with fiberglass beads embedded to provide roughness. Do not use copper or steel wool, it will cause stainless steel to rust. 5.2 Pump Motor The top and bottom bearings are permanently lubricated with a high temperature silicone grease. They should not require lubrication. The pump motor bearings are not available separately.
6.4 No Heating or Insufficient Heating Check if unit is pumping properly. If heat light is not on, check the setting of the setpoint temperature and bath temperature. Check fluid level of the bath. Check for proper line voltage. Check for excessive external cooling lead on unit. At higher temperatures, it could be due to heat loss from tanks, hoses or vapor from a tank. Variance of heat load on the system from experiments may exceed the power handling of the unit.
Section 8. Warranty Thank you for your purchase. We are confident it will serve you for a long time. Our warranty to you is as follows: The manufacturer agrees to correct for the original user of this product, either by repair, or at the manufacturer’s election, by replacement, any defect which develops after delivery of this product within the period as stated on the warranty card.
