Operating Manual for BCLT-2103

1. Safety warning
2. Product Introduction
3. Product use
4. Maintenance and Precautions
5. Attachment
6. Packing List

1. Safety warning

! Dangerous (may result in serious loss of property or casualties)
1. The instrument must be grounded and away from sources of electromagnetic interference (must not be zero line or middle line for the ground).
2. Before use, please confirm the voltage and frequency of the power supply match the product requirements.
3. The product should use a separate power outlet, and confirm the plug, socket, good grounding.
4. Do not allow products in operation without turning off the power switch and unplug the power plug.
5．Do not allow free access or cut short product power line.
6. Do not repair without authorization, the company commissioned by the professionals must be repaired.
! Warning (may cause property damage or personal injury)
1. Must fully read and understand this product manual before operation.
2. When unplugging the power plug, do not drag the power cord directly.
3. One of the following conditions, you must unplug the product power plug:
3.1 When replacing the fuse tube.
3.2 Product failure to be checked repair.
3.3 Long time to stop using the product.
3.4 When moving the product.

! Note (may affect the service life of the product cause it could not work normally)
1. The product should be placed on a hard and firm surface to keep it level.
2. The product should be left some space around.
3. The product must be used under certain conditions of use. (See Chapter III 1.1 ~ 1.4)
4. The product must be used under the correct settings. (See Chapter III for details)

2. Product Introduction

1. Outline

Figure 1

Figure 2

2. Structure Functional Overview
Low temperature circulation tank by the cycle controller, box and refrigeration system composed of three parts. Circulation controller is composed of the temperature controller, temperature sensors, and circulation pump. The box is made of high quality thin steel plate, the surface is sprayed and treated, the liner is made of stainless steel. The refrigeration system is composed of the compressor, condenser, evaporator and other components.
The device relies on the cooling system to rapidly cool down to the desired temperature and the magnetic stirrer system provides good temperature uniformity in the bath. The circulation pump is in addition to meet their own needs of constant temperature control, at the same time for the transfer of heated bath.
Behind the low temperature circulation sink there are inlet and outlet connections. Temperature controller is a CPU processor and peripheral circuits consisting of a double-row four-digit display digital controller, with Pt100 platinum resistance as a temperature sensing element, with high control accuracy, good stability advantages, meanwhile with timing, over-temperature alarm protection and other alarm functions.

3. Product use

1. Preparation before use
1.1 The product should work under the following conditions of use.
a. Ambient temperature: 5 ℃ ~ 35 ℃, air relative humidity: ≤ 85%
b. Atmospheric pressure: (86 ~ 106) KPa
c. Altitude not higher than 2000 meters
d. Power: AC220V±10%/50HZ
e. Keep away from heat source, no corrosive gas around, no strong vibration source and strong electromagnetic field.
1.2 The base that place the equipment should be flat and of non-combustible material.
1.3 Keep the equipment around (front and rear ventilation grid) at least 300mm of space, well-ventilated.
1.4 This equipment is equipped with a compressor. After the equipment is transported, do not operate it right away. After standing in the correct position, wait for (1 ~ 2) days to restart to ensure the normal operation of the compressor.
1.5 When pouring into the bath, please be careful not to pour the liquid into the instrument. It is recommended to open the insulation cover to add water or other medium from the sink port, the liquid must cover the evaporator.
1.6 Should be based on different temperature range, filling different bath (non-over-temperature use).
When the operating temperature is below 5 ℃, please pay attention to the danger of icing! Bath recommended: ethanol or ethylene glycol.

2. Power on

Figure 3
Controller panel
2.1.1 Indicator light description
1）TEMP: Display the measured temperature.
2）SET: Display the setting temperature.
3）Cooling light: Light when the cooling output.
4）TIME area: Display the running time or parameter value.
5）Silencer light: There is an alarm, light when the buzzer has silenced.
6）Alarm light: Light when alarm.

2.1.2 Key Description
① Function key: Used for setting value modification; parameter recall and parameter modification confirmation.
② Shift key: used to set value, shift of internal parameters and view of ambient temperature.
③ Decrease key: In the setting state, click once to decrease 1 digit unit, long press the button, will jump to decrease more digits.
④ Add key: In the setting state, click once to increase 1 digit unit, long press the button, will jump to add more digits.
⑤ Start/stop key: Press and hold this button for more than 4 seconds to control cooling operation / stop.

3. Operating steps
1）Timing function: Press key once, When the time is set as 0, there is no timing function; when the time setting is not 0, the controller has the timing function. Press key once, the TIME value flashes, indicating that the time can be set as needed, by add, decrease and shift key, set the desired time value. Timing time to, Time window shows "END", buzzer sound, press any key to silence.
2）Temperature setting：Press key again, “TEMP SET” window flashes，indicating that the temperature can be set as desired. Set the desired temperature by add, decrease and shift key. Then press key again, return to standard display mode.

Note：①Every time modify a parameter,，need to press“ ” key to confirm the modification is valid.
②After all the parameters are set，long press “ ” key for about 4 seconds to start running.

4. Upper deviation alarm setting
The setting of the upper deviation is reasonable, can play the role of system temperature control or out of control protection, the product must be used when working.
Example: If the product is shipped with AL = 3.0, the alarm temperature is: (set temperature + AL value) ℃

5. Check the temperature control accuracy
5.1 With 0.1 ℃ index mercury thermometer (or resolution 0.1 ℃ digital thermometer) into the bath, the mercury end should be immersed in the bath and placed in the geometric center of the bath.
5.2 Choose a point within the range of product control, when the temperature measurement value is equal to the set value, then keep the temperature for about 1 hour. Observe that the difference between the actual measured value of the mercury thermometer and the measured value of the thermometer should be ≤ ± 0.5 ℃.

4. Maintenance and Precautions

1. The device must be connected to a good grounding outlet! To ensure personal safety.
2. When the bath is water, please pay attention to the use of temperature, prevent freezing, resulting in temperature control being inaccurate.
3. When replenishing the bath liquid, the type of bath liquid into the bath must be the same. (Note that the liquid medium in the working chamber must be filled with different bath liquid according to different operating temperature)
4. Use of flammable bath! Such as the use of improper bath caused damage, is responsible for the user.
5. Connect the rubber tube, connecting the clamp pressure to prevent fall off.
6. Continuous operation, part of the bath cover and circulation pump junction will become very cold, therefore, in the touch of these places, we must be careful to prevent frostbite.
7. Tank filled with liquid is strictly prohibited to transfer or tilt, so as not to be immersed in liquid immersion into the device causing danger or equipment damage.
8. Please use clean water or medium, strictly prevent sediment and other foreign matter into the cooling system damage circulation pump.
9. After use, turn off the power switch, unplug the power cord plug, drain into the drain plug (note the bath temperature, be careful to avoid frostbite) and dry the cabinet.

5. Attachment

1. Main Specifications

Product Name	Cooling recirculating chiller
Model	BCLT-2101	BCLT-2102	BCLT-2103	BCLT-2104	BCLT-2105
Storage tank maximum capacity (L)	5	8	15.5	30	62
Temperature range	-20~20°C
Temperature accuracy	±2°C
Cooling capacity at 10°C (W)	530	800	1500	2500	4000
Refrigerant	R404A		R410A
Security features	Delay, leakage, overcurrent, overvoltage
Total power (W)	550	600	1300	1600	2400
Power requirements	AC220V/50HZ
Pump power (W)	30		60		550
Pump flow max. (L/min)	6		17		30
Maximum head (m)	9		15		25
Inlet/Outlet pipe diameter (mm)	φ10		φ12
Weight (kg)	32	41	60	76	126
Liquid storage (L)	3.5	5.2	13	25	52
Noise level (dB)	≤45		≤55	≤65	≤75
Dimensions WxDxH (mm) (include caster)	210x410x511	310x445x570	400x500x739	450x600x821	560x845x850

Table 1

Product Name	Cooling / Heating recirculating chiller
Model	BCLT-2201	BCLT-2202	BCLT-2203	BCLT-2204	BCLT-2205
Storage tank maximum capacity (L)	5	8	15.5	30	62
Temperature range	-20~80°C
Temperature accuracy	±0.5°C
Cooling capacity at 10°C (W)	530	800	1500	2500	4000
Refrigerant	R404A		R410A
Security features	Delay, leakage, overcurrent, overvoltage (applies to all models)
Total power (W)	1100	1350	2500	3000	4300
Power requirements	AC220V/50HZ
Pump power (W)	30		60		550
Pump flow max. (L/min)	6		17		30
Maximum head (m)	9		15		25
Inlet/Outlet pipe diameter (mm)	φ10		φ12
Weight (kg)	32	41	60	76	126
Liquid storage (L)	3.5	5.2	13	25	52
Noise level (dB)	≤45		≤55	≤65	≤75
Dimensions WxDxH (mm)	210x410x511	310x445x570	400x500x739	450x600x821	560x845x850

Table 2

2. Each function parameter table
Under normal conditions, if you press SET key and SHIFT LEFT key for over 3 seconds simultaneously, LK code will be displayed on the screen and setup of a password will allow entry into the parameter settings. Please do not change any values without further consulting.
1） When the output area on the LCD screen displays LK, press add-subtract key or shift key to let LK=0000 and pressing the SET key may allow you to enter into the setting of the user's parameter hierarchy.

Prompting character	Name	Setup scope	Description	Initial value
dy	Run delay	00:00-99:59	00:00: No delay. Other values- Start of a program will be delayed dy time after pressing the RUN key.

Table 3
（2）When the output area on LCD screen displays LK, make LK=0003. You can enter into setting of manufacturer’s parameter hierarchy only by pressing SET key.
The menu of manufacturer’s parameter hierarchy is as follows:

Prompting character	Name	Setup scope	Description	Initial value
tM	Maximum Allowable Temperature Setting	Set within the measuring range	Stop heating and alarm when the maximum temperature is exceeded.
PO	Power-up Mode	0～3	PO=0000: Controller is in a stopped state after power-on. User must start the operation by pressing the RUN/STOP button for 3 seconds. PO=0001: Controller automatically starts the step operation after power-on. PO=0002: Controller starts running from the last power-off.
AL	Alarming Setting	0～full range	Alarm illuminates with audible output (and Hold function) when the temperature exceeds the Setpoint + AL value.
Pb	Zero adjustment (intercept)	-100.0～100.0	When the zero error of the meter is large and the full-scale error is small, adjust this value. Generally, PT100 rarely adjusts this value.
PK	Full Scale Adjustment (Slope)	-1000～1000 S	When the zero error of the meter is small and the full-scale error is large, adjust this value. PK=4000× (Mercury thermometer value - display value)/display value, generally PT100 first adjust this value.
PA	Revision of RT	-80-80	When the actual RT differs from that shown by the controller, adjust the value accordingly.
2b	The second zero correction	-100-100	When the second channel zero error is large and the full scale error is small, adjust this value. Generally, Pt100 rarely adjusts this value.
2K	Second channel full scale adjustment	-1000～1000	When the zero error of the second channel is small and the full-scale error is large, adjust the value. PK=4000×(mercury thermometer value-display value)/display value, generally Pt100 adjust this value first.

Table 4
Products are strictly tested before leaving the factory, when the studio technical indicators meet the requirements, work properly, generally do not be amended.
3.Trouble shooting

Problems	Causes	Handling methods
1． No power (Light does not shine)	No electrical outlet or poor plug / receptacle contact	Reinsert or repair
	Power into the line off or the power switch is bad	Replace or repair
	Breaker jump	If replaced, still jump., you must check the temperature meter, circulation pump, refrigeration unit and other components, repair before powering on
2． Instrument no display	Temperature controller bad power or incoming terminal off	Replace the temperature controller or reconnect the cable
3． Instrument PV screen display----	Pt100 sensor defective or instrument input circuit fault	Replace Pt100 or replace the temperature controller
	Thermometer full-scale setting error so that the measured value is out of range	Reset
4． Not cool	Cooling power switch is not on	Turn on
	Compressor bad, bad protector, boot does not start	Replace the compressor
	Overheating causes compressor protector to start	Stop for a few hours, natural recovery
	Leakage of refrigerant, insufficient cooling capacity, blocked lines	Drain and add refrigerant.
5． Large temperature error	Poor contact of Pt100 sensor, big error	Replace Pt100
	Correct SC, HL parameters (large error)	Refer to this manual
	Adjust parameters such as PID (static difference)	Refer to this manual
	Cold, heat power imbalance	Adjust AL
6．Poor uniformity	Circulating pump flow is not enough, the bath does not cycle,	Adjust or replace

Table 5

6. Packing List

Product name：Low temperature circulation bath

Serial number	Category	Name	Unit	Quantity	Remark
1	Document	Operation instruction		1
2	Document	Packing list		1
3	Spare parts	Power line		1
4	Spare parts	Connecting tube		2