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<1> Cautions ---------------------------------------------------------------- 3
<2> Contour and parts introduction ---------------------------------- 4
<3> Installation -------------------------------------------------------------- 5
<4> Operation and parameters adjustment ----------------------- 6
<5> Alarm and output terminal ----------------------------------------- 10
<6> Simple troubleshooting -------------------------------------------- 11
Thank you for using the machine from GUANGZHOU TEYUELECTROMECHANICAL CO., LTD.
Please read the installation instructionscarefully before installing and operating and keep it properly.
This installation instructions is not a quality assurance. GUANGZHOU TEYUELECTROMECHANICAL CO., LTD
reserves the right to the interpretation ofcorrection of typographical errors, improper mentioned information and
productimprovement. The amended content will be reprinted in installation instructionswithout notice in advance.
Please choose model of 50Hz or 60Hz according to actual circumstance.
storage water tank!
The new machine is packed after draining whole water in the tank, so please make sure the tank has water inside
before machine starting, otherwise it’s easily to have the pump damaged. When the water level is below the green
(NORMAL) range of the water level gauge, the cooling capacity of our chiller will go down slightly. Hence please
ensure the water level is within the green (NORMAL) range. To drain through circulating pump is strictly prohibited!
It’s essential to remove and wash the dust gauze regularly, otherwise chiller malfunction can be caused by serious blockage.
With greater ambient humidity, when the water temperature is lower than theambient temperature, the condensate
water will generate on the surface ofwater circular pipes and the cooled components. If above circumstanceappears,
it is recommended to set a higher water temperature or keep pipesand cooled parts warm.
It is very simple to install this industrial cooling machine. The installation for the
first time of the new machine can be carried out by following steps:
accessories are completed.
Observing the water level gauge to feed water slowly, be careful not to have the
water overflowed!
properly.
water tank!)
(1) Power switch turned on, the circulation pump of the chiller starts working. The
first time of operating may cause more bubbles in the pipe leading to a flow
alarming occasionally, but running for a few minutes later, it will go back to
normal.
(2) If the chiller starts for the first time, you must immediately check whether the
water pipe leaks.
(3) Power switched on, if the water temperature is under the set value, it is normal that fans and other components
of the machine do not work. The temperature controller will automatically control the working conditions of the
compressor, magnetic valve, fans and other parts based on the set controlling parameters.(4) As it takes a longer
time to start over the compressor and other components, according to different conditions,
the time is range from seconds to minutes, so do not turn on and off frequently.
The first starting up of a new chiller will empty the air in the water pipe, causing a slight water level decline, but in
order to keep the water level in the green area, it is allowed to add adequate water again. Please observe and record the current water level, and inspect it again after the chiller running for a period of time, if the water level drops
obviously, please re-inspect the water pipeline leakage.
CWFL-2000 series use an intelligent thermostat. Normally users do not need toadjust the parameters. If it is necessary,
please refer to page 6 , “Operatingstatus and parameters adjustment.”
<4> Operation status and parameters
adjustment
The new T506 intelligent temperature controller does not need to adjust the
controlling parameters under normal circumstance. It will self-adjust
controlling parameters according to room temperature for meeting equipment
cooling requirements.
The new T506H intelligent temperature controller is selected constant
temperature control mode as factory setting with water temperature at 25℃.
User can adjust it as needed.
T506 and T506H controllers are of same functions and structure except
default setting.
(1). Indicators of temperature controller working status:
COMP ON, compressor working
SV ON, solenoid valve working
Heating ON, heating rod working
INT Ctrl ON, controller working in intelligent control mode
CT Ctrl ON, controller working in constant temperature control mode
PARAM Set ON, controller working in parameters setting mode
ALM OUT ON, alarm output status
Room Temp ON, displaying room temperature
ST DLA ON, starting up delay status
(2). Press key to show the room temperature, 6 seconds later default display restored. (Meanwhile, Room Temp light is on, displaying room temperature.)
(3). keys are for modifying parameters values and keys are for switching parameter items. 6 CWFL-2000 Series
(4). RST key: confirm
(5). SET key: setting function
Before machine startup, press and hold keys until the controller displays rE, 6 seconds later after releasing the keys, the controller works in normal order. All parameters values settings of the controller have been restored to factory settings.
(1) Alarm Display:
When alarm occurs, the error code and the temperature will be alternately
displayed.
| E1 | E2 | E3 | E4 | E5 | E6 |
| Ultrahigh room water temperature | Ultrahigh water temperature | Ultralowwater temperature | Room temperature sensor failure | Water temperature sensor failure | Externalalarm input |
(2) To suspend the alarm:
In alarming state, the alarm sound could be suspended by pressing any button,
but the alarm display remains until the alarm condition is eliminated.
| No | Code | Item | Range | T-506 Temperature controller Factory Setting | T-506H Temperature controller Factory Setting | Note |
| 1 | F0 | Temperature setting | F9~F8 | 30 | 25 | Constant temperature control effecting |
| 2 | F1 | Temperature Difference values | -15~+5 | -2 | -2 | Intelligent control effecting |
| 3 | F2 | Cooling hysteresis | 0.1~3.0 | 0.3 | 0.3 | |
| 4 | F3 | Way of control | 0~1 | 1 | 0 | 1: intelligent 0: constant temperature |
| 5 | F4 | Alarm for ultrahigh water temperature | 1~20 | 20 | 10 | |
| 6 | F5 | Alarm for ultralow water temperature | 1~20 | 20 | 15 | |
| 7 | F6 | Alarm for ultrahigh room temperature | 40~50 | 45 | 45 | |
| 8 | F7 | Password | 00~99 | 8 | 8 | |
| 9 | F8F | The allowed highest water temperature | （F9+1) | 35 | 30 | |
| 10 | F9 | The allowed lowest water temperature | ~40 1 ~（F8-1) | 25 | 20 |
Press SET key to enter into the user-defined state. Meanwhile, PARAM SET is on, controller in parameters setup status.
(1) Under intelligent mode, the control panel displays the temperature difference value between water and air (default value is -2).
(2) Under constant temperature mode ， the control panel displays the set temperature value (default value is 25). At this moment, press keys to change settings. After modifying the value, press RST key to save and exit, then new parameters take effect, or press SET key to exit without saving parameters. If there is no more action within 20 seconds, it will automatically exit modifying status without saving parameters.
(1) Press and hold the key while press SET key for 5 seconds until 
displayed in upper window and PAS in lower window. Then press keys to select the password (default setting is 8), and then press the SET key, if the password is correct, F0 displays, entering into setup status, D1 flashing to indicate that the controller is under parameters setup status. If the password is incorrect, it returns to temperature display.
(2) Enter setup state, press keys to switch parameter items circularly, then press keys to modify the parameter values. Press enter key RST at any time to exit parameters setup with saving modified parameters and return to temperature display, then chiller runs under the new parameters. If no key is pressed within 20 seconds, the controller will automatically exit parameters setup without saving the modified parameters (under parameters setup status, system running in original parameters). Under parameters setup status, SET key does not work.
Note:
CWFL-2000 Series
| No | Code | Item | Value in case 1 | Value in case 2 | T-506H Temperature controller Factory Setting | T-506H Temperature controller Factory Setting |
| 1 | F0 | Temperature setting | 28 | 20 | 30 | 25 |
| 2 | F1 | Temperature Difference values | -2 | -2 | ||
| 3 | F2 | Cooling hysteresis | 2 | 1 | 0.3 | 0.3 |
| 4 | F3 | Way of control | 0 | 0 | 1 | 0 |
| 5 | F4 | Alarm for ultrahigh water temperature | 5 | 4 | 20 | 10 |
| 6 | F5 | Alarm for ultralow water temperature | 10 | 14 | 20 | 15 |
| 7 | F6 | Alarm for ultrahigh room temperature | 45 | 48 | 48 | 45 |
| 8 | F7 | Password | 8 | 8 | 8 | 8 |
| 9 | F8F | The allowed highest water temperature | 30 | 30 | 35 | 30 |
| 10 | F9 | The allowed lowest water temperature | 5 | 5 | 25 | 20 |
(1) Case 1: cooling water temperature is controlled by constant mode. Requiring water temperature is constant in 28℃, and the fluctuate does not exceed ±2℃. The alarm of over high water temperature will be on when water temperature is 5℃ higher than normal value, and the alarm of over low water temperature will be on when water temperature is 10 ℃ lower than normal value. It is convenient for user to adjust the water temperature between 5-30℃.
(2) Case 2: cooling water temperature is controlled by constant mode. Requiring water temperature is constant in 20℃, and the fluctuate does not exceed ±1℃. The over high water temperature will be on when water temperature is higher than 25℃, and the alarm of over low water temperature will be on when water temperature is lower than 5℃. (Regardless of what is the ambient temperature, the cooling water temperature is constant in 19℃ to 21℃)
In order to guarantee the equipment will not be effected while abnormal situation happens on the chiller, CWFL-2000 dual temperature and dual pump series chillers possess alarm protection function.
| Condition/Display | Alarm code | Buzzer | Out H1.H2 Disconnection | Out H1.H3 BREAK OVER |
| Circulating pump works properly | DISCONNECTION | BREAKOVER | ||
| Alarm of water shortage | E6 | Sounds | BREAKOVER | DISCONNECTION |
| Faulted circulating pump | E6 | Sounds | BREAKOVER | DISCONNECTION |
| Ultrahigh room temp | E1 | Sounds | BREAKOVER | DISCONNECTION |
| Ultrahigh water temp | E2 | Sounds | BREAKOVER | DISCONNECTION |
| Ultralow water temp | E3 | Sounds | BREAKOVER | DISCONNECTION |
| Faulted room temp sensor （constant temp invalid） | E4 | Sounds | BREAKOVER | DISCONNECTION |
| Faulted water temp sensor | E5 | Sounds | BREAKOVER | DISCONNECTION |
| Chiller power failure | BREAKOVER | DISCONNECTION |
Note: The flow alarm is connected to the normally open relay and normally closed
relay contacts, requiring operating current less than 5A, working voltage less
than 300V.
| Failure | Failure Cause | Approach |
| Machine turned on but unelectrified | Power cord is not plugged in place | Check and ensure the power interface and the power plug is plugged in place and in good contact. |
| Fuse burnt-out | Open the electric box cover, check the if necessary and check whether the power supply voltage is stable; Check and ensure the power interface and the power plug are in good contact. | |
| Flow Alarm (controller displays E6) use a water pipe directly connectto the water outlet and inlet but still without water flowing | Water level in the storage water tank is too low | Check the water level gauge display,add water until the level shown in the green area; And check whether water circulation pipe leaks. |
| Flow alarm occurs while running with other equipment (controller displays E6), but there is water flowing and no alarm when use a water pipe directly connected to the chiller water outlet and inlet. | Water circulation pipes are blocked or a pipe bending deformation. | Check water circulation pipe |
| Ultra-high temperature alarm （controller displays E2） | Blocked dust gauze, bad thermolysis | Unpick and wash the dust gauze regularly |
| Poor ventilation for air outlet and inlet | To ensure a smooth ventilation for air outlet and inlet | |
| Voltage is extremely low or astable | To improve the power supply circuit or use a voltage regulator | |
| Improper parameter settings on | To reset controlling parameters orrestore factory settings | |
| thermostat Switch the power frequently | To ensure there is sufficient time for refrigeration (more than 5 minuets) | |
| Excessive heat load | Reduce the heat load or use other model with larger cooling capacity | |
| Alarm for ultra-high room temperature （controller displays E1）Serious problem of condensate water | The working ambient temperature is too high for the chiller Water temperature is much lower than ambient temperature, high humidity | To improve the ventilation to guarantee that the machine is running under 40℃.Increase water temperature or to preserve heat for pipeline |
| Water drains slowly from outfall during water changing | Injection port is not open | Open the injection port |
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