Omtech CW-5200 User manual

CW-5200
Industrial Chiller
User Manual
Read Carefully Before Use
Keep for Future Reference
V20230421

1
Safety Information
• DO NOT use this product with an incompatible, unstable, or ungrounded power supply. Only
use with well-grounded 3-prong 110V/60Hz outlets. Do not use a 3 to 2-prong adapter to
allow it to run from an ungrounded outlet.
• DO NOT run this chiller without rst lling it with an adequate amount of distilled water or
specially formulated laser-safe antifreeze. If neither is available, deionized water is preferable
to tap water, which can cause faster scaling and microbial growth that will shorten the life
expectancy of your chiller and attached devices.
• Place this chiller in a dry well-ventilated environment away from heat sources but warm
enough to avoid freezing temperatures.
• Ensure at least 1 ft. (30 cm) of open space next to its side air inlets.
• Ensure at least 1′8″ (50 cm) of open space above its top air outlet.
• When cooling a laser engraver, take care that this device does not cause the room's humidity
to exceed safe levels. Some smaller rooms may require additional ventilation to ensure safe
engraving.
• Remember that the OUTLET of the water chiller should connect to the INLET of the product
to be cooled. Similarly, the water chiller's inlet should be connected to the other machine's
water outlet.
Warning!
Caution!
Specications
Input Voltage 110–120 V~ 60 Hz
Dimensions 22.8×11.3×18.1 in. 58×28.8×46 cm
Compressor Power 0.67 hp 0.5 kW
Fan Power 0.03 hp 0.02 kW
Water Pump Power 0.04 hp 0.03 kW
Refrigeration Capacity 0.39 ton 1.39 kW
Refrigerant R410A
Refrigerant Charge 10.6 oz. 300 g
Max. Working Temperature 113°F 45°C
Tank Capacity 1.6 gal 6 L
Inlet / Outlet Fitting 0.4 in. 10 mm
Max. Lift 42.7 ft. 13 m
Max. Flow 3.17 gal/min 12 L/min
Net Weight 57.3 lb. 26 kg

2
Parts Diagram
Front
Back
Cooling Water Inlet
Cooling Water Outlet
Water Level Gauge
Water Drain
Filling Port
Control Panel
Air Inlet & Filter
Power Socket
Spare Fuse
Alarm Output Terminal
Power Switch
Package List
1 × Industrial Chiller
1 × Power Cord
1 × Alarm Signal Output Plug
1 × Spare Fuse

3
Installation
1. Fill the water tank with distilled or deionized water.
For cooling carbon steel equipment, include the
appropriate amount of anticorrosive additive. DO
NOT ll completely. Pay attention to the water gauge
and ensure that the water level at the appropriate
level.
Use the water level gauge and ensure the level
is between the middle and top of the green area.
“FULL” is actually overfull. Pour slowly and do not
allow the water to overow.
2. Connect the chiller’s water outlet port to the water
inlet of the product to be cooled and connect the
chiller’s water inlet port to the water outlet of the
product to be cooled.
3. Plug in the power cable and turn on the water
chiller. The pump will begin working. There may be
some bubbles at rst. These should disappear after
a minute or two. Don’t worry if the fans and other
components of the chiller do not activate. They are
usually automatically controlled and will not begin
working until they are needed by the machine.
4. Check the water level of the tank again using the
water level gauge. The water level of the chiller may
be lowered as it lls the cooling path in your device.
If necessary, carefully add more water to the chiller
to maintain appropriate levels of water. Keep the
level between the middle and top of the green area.
If the water level drops sharply or continues to
go down during normal use, turn off your device
and examine the water pipes and cooling path for
leakage. Repair any such leaks before restarting the
devices and continuing work.
5. Adjust the water chiller’s parameters with the control
panel as needed.

4
Operation
Control Panel
Comp Compressor indicator light
SV Solenoid valve indicator light
Heating Heating rod indicator light
INT Ctrl
Intelligent control mode indicator light
The temperature will be kept 3°F (2°C) cooler than the room
Users can adjust this value as needed
CT Ctrl
Constant temperature mode indicator light
A constant 77°F (25°C) temperature will be maintained
Users can adjust this value as needed
PARAM Set Parameter setting mode indicator light
ALM OUT Alarm status indicator light
This light comes on when an alarm is sounding
Room Temp Room temperature indicator light
Hold ▼ to display the current ambient room temperature
ST DLA Startup delay indicator light
This light comes on during startup as the device checks its power supply
RST Enter button
SET Settings button

5
Temperature Adjustment
Press SET to enter settings mode. Use ▲ and ▼ to modify the desired water temperature. Press
RST to save and exit. Press SET to exit without saving. If no activity is detected for 20 seconds,
settings mode will also exit without saving. The set temperature will be displayed on the lower
readout, and the chiller will bring the actual water temperature to that level over time.
Password Protection
Press ▲ and then hold SET until “00” is displayed in the Actual Temp display and “PAS” is
displayed in the Set Temp display. Use ▲ and ▼ to select your password and press SET to save
and exit.
Parameter Adjustment
Enter your password again and the device will enter the advanced settings mode. Use ▲ and ▼
to cycle through the parameters. Use ▲ and ▼ to modify the current parameter. Press RST to
save and exit. Press SET or wait to exit without saving any changes.
Order Code Item Range Defaults Note(s)
1 F0 Water Temperature F9–F8 25 Celsius value of constant
temperature mode
2 F1 Temperature Di󰀨erence −15 to +5 −2
Celsius value of the di󰀨erence between
water and air temperatures in intelligent
control modeCelsius
3 F2 Cooling Hysteresis 0.1–3.0 0.8 Celsius value of the acceptable deviation
from F0 and F1 values
4F3 Control Mode 0–1 1 1 is intelligent control mode
0 is constant temperature mode
5 F4 Overheated Water Alarm 1–20 10 Celsius value above the F0 and F1 values
causing an alarm
6F5 Overchilled Water Alarm 1–20 15 Celsius value below the F0 and F1 values
causing an alarm
7 F6 Overheated Room Alarm 40–50 45 Celsius value of the ambient room
temperature causing an alarm
8F7 Password 00–99 8
9F8 Highest Allowed Water Temperature F0–40 30 Celsius value of the highest acceptable
temp. in intelligent mode
10 F9 Lowest Allowed Water Temperature 1–F0 20 Celsius value of the lowest
acceptable temp. in intelligent mode

6
For example:
Case 1: The chiller is in intelligent control mode and requires the water to be between 77–88°F
(25–31°C). With the ambient room temperature kept constant, the water temperature will remain
5°F (3°C) lower with a deviation of ±0.9°F (±0.5°C). An alarm will sound if the water temperature
is 18°F (10°C) higher or lower than this target.
Case 2: The chiller is in constant temperature mode and requires the water to be at 82°F (28°C)
with a deviation of ±3.6°F (±2°C). An alarm will sound if the water temperature is 9.6°F (5°C)
higher than this target or if the water is 18°F (10°C) lower than this target.
Case 3: The chiller is in constant temperature mode and requires the water to be at 77°F (25°C)
with a deviation of ±1.8°F (±1°C). An alarm will sound if the water temperature goes above 86°F
(30°C) or below 50°F (10°C).
Restore Factory Settings
While the chiller is in standby mode, press and hold ▲ and ▼ until “rE” is displayed. All settings
have now been returned to factory defaults.
Code Item Defaults Value in
Case 1
Value in
Case 2
Value in
Case 3
F0 Water Temperature 25 28 25
F1 Temperature Di󰀨erence −2 -3
F2 Cooling Hysteresis 0.8 0.5 2.0 1.0
F3 Control Mode 1 1 0 0
F4 Overheated Water Alarm 10 10 5 4
F5 Overchilled Water Alarm 15 10 10 14
F6 Overheated Room Alarm 45 45 45 45
F7 Password 8 8 8 8
F8 Highest Allowed Water Temperature 30 31 30 30
F9 Lowest Allowed Water Temperature 20 25 5 5
Maintenance
• Regularly clean the air lter of dust and debris with a soft cloth or vacuum.
• Periodically clean the inside of the inlet and outlet hoses to ensure no clogs form. To do this,
soak the hoses in a mild detergent solution with a low concentration of biocide (e.g. bleach)
for 8–24 hours. Rinse the hoses with tap water before reinstalling them.
• Periodically clean the water tank with a mild detergent solution with a low concentration of
biocide (e.g. bleach) to prevent and remove scaling.
• Disconnect the chiller from its power supply and drain all water before transporting it or
placing it in storage.

7
Troubleshooting
Potential Problems Usual Solution(s)
The chiller does not turn on. Check your electrical connections, fuse box, and
circuit breaker.
Condensation forms on the chiller. Increase chilling temperature or decrease the
ambient room temperature.
Water drainage is slow. Open the water tank inlet to allow air to ow more
freely.
Scaling builds up in the water tank. Clean with a mixture of water, mild detergent, and
bleach.
Error Messages
When alarms occur, an error code will be displayed as above. The alarm noise can be muted by
pressing any button on the control panel.
Error Message Meaning
E1 The ambient room temperature is too high. Reduce it or cease work.
E2
The water temperature is too high. Cease work and replace or cool it.
More refrigerant may be needed. Other problems which might exist include
obstructed air flow from a clogged filter or inadequate space around the
chiller's vents, an unstable power supply, an excessive heat load from the
machine being cooled, or a poor parameter conguration.
E3 The water temperature is too low. Cease work and replace or heat it.
E4 The room temperature sensor has malfunctioned. Cease work and repair
or replace it.
E5 The water temperature sensor has malfunctioned. Cease work and repair
or replace it.
E6 The water flow has a problem. Cease work and check for low water,
obstructions, or a pump malfunction.

8
Contact Us
Thank you for choosing our products! If you have any questions or
comments, contact us at [email protected] and we'll resolve your
issue ASAP!
For a .pdf copy of the latest version of these instructions, use the
appropriate app on your smartphone to scan the QR code to the right.

LCW-5201-US
Rev. 21 Apr. 2023