skyjuice123

Just to ask. You use external temperature probe? Most use internal probe. Water flow has to be high. Not likely they will get 1 hr run and 2 hrs rest.

Have seen pple using a 1/4 hp chiller for 5 feet tank which is roughly 410 litres. If using JBL website, Remember that actual water temperature refers to maximum water temperature which should be around 30C or 87F; also, a 40 watts flourescent fitting will give 50 watts of heat; 40 watts for the lamp and 10 watts for the ballast. It is still good to up one size larger because chiller will age over time and efficiency will drop and one might add some equipment or pumps in future..

Another article written on how to select a chiller for nano aquarium tanks http://skyjuiceiswater.blogspot.sg/2012/11/selecting-nano-aquarium-chillers.html

I have some exchanges with someone at the other forum about Peltier and Freon chillers and found that even those experienced reef keepers do not much about chillers. I have just written an article posted in my blog after gathering enough information from the forumers what they know and they do not know about their own aquarium chillers. Generally, some forumers do not know that Peltier Chiller can also be used for reef keeping; also, they are not familar with the term Coefficient of Performance (COP) to select chillers properly. All they are following are thumb rules pick up from here and there. Please note that blog writing is just one of my hobby which I started many years ago. I gain nothing by maintaining the blog. Just like to share with some reefers about Peltier and normal freon chillers. http://skyjuiceiswat...r-chillers.html If you are "pinched" by ever rising energy cost and want to cut some electricity cost in your home.. there are also articles on how to save up to 90% of your cooling energy bills; for example, spot cooling, ultrasonic humidifier cooling and DIY cooling bed etc

can now assess the article from this address http://skyjuiceiswater.blogspot.sg/2012/11/servicing-resun-cl650-aquarium-chillers.html

Read many posts here recommending reefers to top up gas or refrigerant when chillers does not perform as good as before. This recommendation is good if there is a leak somewhere because of manufacturing defects. Most aquarium chiller like refrigerators and unlike airconditioners have compressor of hermetically sealed type, meaning they are air tight that should never have refrigerant leakage throughout its life unless there is a pipe burst or a puncture where topping up gas alone will not help to restore the efficiency. Most chiller have in-built compressor overload protection that shoudl prevent overloading. Most likely, the cause of inefficiency is due to condenser coil being clogged up with dirts over the time of operation even when one has obediently change and clean the filters according to the manufacturer's instruction. Small dirt particles passing through the filter will build up overtime without users realising that it has stucked and clogged up the condenser. A chiller that has been in operation for more than 2 years should perform a condenser coil clean up where cleaning chemical might have to be used to losen up the dirt first, then be flushed out by strong water current. A soft brush may be used also to speed up the cleaning process. Remember, a dirty condenser may cut the chiller efficiency by as much as 60% and increase the electricity bill by about the same amount. I am starting to write a blogger article with photos etc on how I performed this condenser cleaning operation to restore the chiller efficiency.

There is one kit from Hong Kong selling through ebay, all for the price of S$41/= including shipping. The kit consists of power supply, 2 pieces of peltier element etc only for refrigeration. For chiller unit, one would need to buy a cooling block and a temperature controller which cost another S$40/-. Cooling is only about 120 watts; may be only good for emergency use. One can use multiply unit of these connect them in parallel to give the required power. Not for usual run as it is not energy efficient. It is powered by 12 volt supply; may be the daring ones can extend the cooling heat sink and dip it directly into the water. This is actually how Ice Probe chiller works. http://www.ebay.com.sg/itm/12V-6A-refrigeration-system-Cooling-system-DIY-kit-set-Peltier-cooler-TEC1-12706-/180959391026?pt=Home_Automation_Modules&hash=item2a22052d32

Peltier element can freeze water droplet into ice in about 30 seconds and can even go below -40C. Therefore, Pletier Chillers must work with proper temperature controller.

Just to share this DIY chiller project that uses electronic chip called Peltier. Peltier chillers has fewer components and they are cheap to construct. All components are available from ebay. dun think the project cost would be more than S$120/= if one were to use other form of heat sink than the one shown that cost US$60/=. Good for those who are DIY enthusiatic and not willing to buy costly chiller for their reef project. One snag though is that Peltier chillers is not as energy efficient as Freon chillers. http://www.shine7.com/aquarium/chiller.htm

Yes. for cl150, you can connect in any direction. for other chillers that run on freon, must follow the directional sign as they have embeded heat exchanger that works better for heat exchange when there is a counterflow between freon and the water

Hi, you can try Acez Instrument. @ basement of Sim Lim Tower to buy the probe. If the probe is not tracking the reading of the tank, there are many reasons, most attributed by insufficient flow but it was working properly before and chiller start and stop more often than normal, it may be time to service the chiller unit if it has not been serviced for more than a year.

The Cl150 use peltier element for cooling. Peltier is an electronic chip, It is only about 40mm to 60mm square, one end mounted on water cooling block, the other end has a air-cooled heat sink. Unlike normal chillers running on freon, it has no evaporator pipes and hence, direction of flow is not important. Peltier chillers are cheaper but there are 2.5 times less energy efficient than normal chillers running on freon gas.