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FAQ's
FAQ's for the S&A Water Chillers range
CW-3000TG Helpful Guide
What is it?
The CW-3000TG is a chiller used for cooling water however it is limited by the room temperature as it is not a refrigerated system.
What is it used for?
It is designed for laser cooling. It is a good low cost solution where the load is less than 80w and where the water temperature does not need to be controlled below the room temp.
What is the lowest temperature?
Limited by the room temperature if you are using the CW3000. If you are using another model then please read the specific datahere
How do you adjust temperature settings?
A. Please refer to section 7 of the user manual. This explains how to use advanced setting adjustments. In order to change the temperature, we must change F9 & F0. Please refer to the table in section 8 for more details.
References:
Hard copy of manual: Section 7
Digital manual: Page 8-9
What are the power requirements?
220V, 50/60Hz.
Is there a flow alarm?
Yes, there is an audible flow alarm and an indicator light on the temperature controller. If you hear the flow alarm this could indicate that there is a flow restriction or there is not enough water in the reservoir.
What size and fitting type are the water connections?
The connections for water inlet/outlet are 10mm hose barb.
What size lasers can this chiller cool?
It can be used for up to 80W lasers however it is limited by the room temperature.
Do you have installation instructions?
Yes, please refer to CW-3000TG manual.
What type of water should be used with this chiller?
It is highly recommended to use distilled water. This will prolong the life of the chiller unit.
Should I perform any routine maintenance?
The CW-3000TG chiller should operate with little maintenance. On an annual basis it would be a good idea to carry out a flush of the chiller’s cooling loop.
How do you perform a flush?
The flush procedure is simple. Please refer to the separate instructions on our blog page - https://www.megacold.uk.com/flushing-the-water-chiller
Reference: Flushing out the cooling water document
What kind of refrigerant is used?
The chiller is not a refrigerated system.
Is the chiller subject to regular F-GAS leak checks?
No as it does not contain any refrigerant.
Are there any future bans for the refrigerant?
Not applicable – no refrigerant.
What is the cooling capacity of this chiller?
Not really applicable – the system can handle up to an 80W load at room temp.
What certification does this chiller have?
The chillers are CE and RoHS compliant.
References: CE cert, RoHS cert
CW-5200TH Helpful Guide
What is it?
The CW-5200 is a chiller used for controlling the temperature of water which is circulated around a process loop.
What is it used for?
It is designed for laser cooling. It has a cooling capacity of 1.4kw and can be used on laser up to 130 watts in size. Aside from this it can be used for any water cooling application where we need to maintain around 20 degrees C.
What is the lowest temperature I can go with this chiller?
The temperature can be set between 5-30 degrees C.
How do you adjust temperature settings?
Please refer to section 7 of the user manual. This explains how to use advanced setting adjustments. In order to change the temperature, we must change F9 & F0. Please refer to the table in section 8 for more details.
References:
Hard copy of manual: Section 7
Digital manual: Page 8-9
What are the power requirements?
220V, 50/60Hz.
Is there a flow alarm?
Yes, there is an audible flow alarm and an indicator light on the temperature controller. If you hear the flow alarm this could indicate that there is a flow restriction or there is not enough water in the reservoir.
What size and type are the water connectons?
The connections for water inlet/outlet are 10mm hose barb.
What size lasers can this chiller cool?
The CW-5200 is most commonly used for the K40 laser however it can handle up to a 130w laser CO2 laser tube.
Reference: Chiller model guidelines document
Do you have installation instructions?
Yes, please refer to page 5 of the digital manual or section 2 of the hard copy supplied with the chiller.
What type of water should I use with this chiller?
It is highly recommended to use distilled water. This will prolong the life of the chiller unit.
Should I perform any routine maintenance?
The CW-5200 chiller should operate with little maintenance. On an annual basis it would be a good idea to carry out a flush of the chiller’s cooling loop.
How do I perform a flush?
The flush procedure is simple. Please refer to our specific 'How to Flush the system' blog post.
Reference: Flushing out the cooling water document
What kind of refrigerant is used in the CW5200?
The chiller uses R407C refrigerant (480 grams). This refrigerant has a GWP of 1774 and a specific equivalent CO2 tonnage of 0.85. Please see MSDS on file.
Is this chiller subject to regular F-GAS leak checks?
F-GAS leak checks are not required for systems containing less than 5 tonnes CO2 equiv.
Are there any future bans for this refrigerant?
The latest refrigerant ban was for service use over a GWP 2500. Currently (Feb 2021) there is no ban on using R407C at this quantity.
What is the cooling capacity of this chiller?
The nominal cooling capacity is 1.4kw at 50hz. Please refer to the cooling performance curve on the 2nd page of the datasheet for cooling capacity vs water temperature.
Reference: CW-5200TH brochure
What certification does this chiller have?
The chillers are CE and RoHS compliant.
References: CE cert, RoHS cert
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