Is my chiller malfunctioning???

[lyz77]

I got a new Resun C0500 and hv set the temp to 26 deg. I notice that my tank temp stays at 30 deg for 3-4hrs without any temp drop though I hv set my chiller to 26 deg.

Is my new chiller malfunctioning???

[May&Bruce]

It doesn't sound right. My Co500 brought my 150 gal tank down from 30 to 26 in around 3 hours. What flow rate pump are you using? I think resun recommend 2700 L/hr. You should definitaly use the pump size that they recommend - nothing smaller. Remember too, if you are returning the water from your chiller directly back into your main tank you will have a lower flow rate due to the height (head) that you are pumping the water up to.

[tjlee]

Sometimes the degree on Resun not accurate, my show 28 but actual is 26...you might want to test the temp in your tank

[lyz77]

It doesn't sound right. My Co500 brought my 150 gal tank down from 30 to 26 in around 3 hours. What flow rate pump are you using? I think resun recommend 2700 L/hr. You should definitaly use the pump size that they recommend - nothing smaller. Remember too, if you are returning the water from your chiller directly back into your main tank you will have a lower flow rate due to the height (head) that you are pumping the water up to.

I'm using one of my OR6500 to Tee-off to my chiller and out to my sump! So in terms of flow, shd be more then sufficient! I started my chiller at 7pm yesterday and the tank temp is 33deg. This morning after 12hrs of continuously running, the tank temp is stuck at 29.3deg. I notice that there's a different of ard 2 deg between my chiller and my main tank.

[Tigger]

Hi M&B,

Can u share the performance of this chiller? ie how often it kick in and the durantion of each kick in. Pls provide the heat source of yr tank too. TIA.

[lyz77]

Sometimes the degree on Resun not accurate, my show 28 but actual is 26...you might want to test the temp in your tank

My tank temp is higher then the chiller temp.

Main tank: 29.3deg after running the chiller for 12hrs continously (Drop from initial 33deg)

Chiiler: 28 deg (Drop from initial 31deg)

[Tigger]

I'm using one of my OR6500 to Tee-off to my chiller and out to my sump! So in terms of flow, shd be more then sufficient! I started my chiller at 7pm yesterday and the tank temp is 33deg. This morning after 12hrs of continuously running, the tank temp is stuck at 29.3deg. I notice that there's a different of ard 2 deg between my chiller and my main tank.

I m not sure if having too high flow will affect the chiller performance. I got a feedback from a senior reefer that he runs 4000L/H pump and the chiller kick in/out very often.

Myself running C0500 w 1260. Chiller kicks in every 1.5-2 hr or so and run for 20mins.

[lyz77]

I m not sure if having too high flow will affect the chiller performance. I got a feedback from a senior reefer that he runs 4000L/H pump and the chiller kick in/out very often.

Myself running C0500 w 1260. Chiller kicks in every 1.5-2 hr or so and run for 20mins.

I tried reducing the flow as I was told that higher flow will achieve better chilling results. Anyway, I tried both high and low flow and I find it ridiclously to hv the chiller run continously for 12hrs and yet, the temp is not going down any further.

Strange rite???

[Tigger]

That is very wrong w the chiller. Is the output cold?

I have known of the same senior reefer who ran the C0500 to below 20C and his tank is abt 522. There is something really wrong w the chiller.

[lyz77]

That is very wrong w the chiller. Is the output cold?

I have known of the same senior reefer who ran the C0500 to below 20C and his tank is abt 522. There is something really wrong w the chiller.

I think so too. Had call up the agent and hopefully, he can resolve this issue. If not, dun kw whether will they provide one to one exchange?!?

[Elune]

lyz77 : sometimes the thermometer of the chiller is not accurate, try testing the water temperatures with another external digital thermometer.

tigger: ur $250 chiller u sold off (my another reefer), same situation -- chiller states 29 degree, but his thermometer already indicates 25.6 degree. =) so such things happens, chiller's indicator might not be accurate.

[Tigger]

tigger: ur $250 chiller u sold off (my another reefer), same situation -- chiller states 29 degree, but his thermometer already indicates 25.6 degree. =) so such things happens, chiller's indicator might not be accurate.

I already informed of the buyer such things exist and its up to his disgression to play ard w the temp setting. Thanks for yr concern.

[lyz77]

lyz77 : sometimes the thermometer of the chiller is not accurate, try testing the water temperatures with another external digital thermometer.

tigger: ur $250 chiller u sold off (my another reefer), same situation -- chiller states 29 degree, but his thermometer already indicates 25.6 degree. =) so such things happens, chiller's indicator might not be accurate.

I have another external thermometer and the temp in the main tank is higher then the chiller buy ard 2 deg. Furthermore, I hv set my chiller to stop at 26deg and it's stuck at 28deg for hours without going down any further!

Sign.... my monthly electrical bill will shoot damn high considering it's running continously at full load!!!

[Elune]

I already informed of the buyer such things exist and its up to his disgression to play ard w the temp setting. Thanks for yr concern.

tigger: chill, we know, u're a nice guy. and the purchase was high-satisfaction by the buyer. very nice condition u maintained the chiller. cheers

[May&Bruce]

Tigger

My tank is 150 gal 5 x 2 x 2 with a 30 gal sump. I have 3 x 150W MH and 2 x 4 ft actinic T5 lights. All my pumps are in-sump, inc large pump for skimmer, large return pump, FR pump, chiller pump and 3 x powerheads in the tank. In other words my heat load is quite high. The tank also gets direct sun for a few hours each day.

I cannot remember the size of pump on my chiller but the flow rate is exactly as recommended for the CO500, which I think from memory is about 2700 or 2800 L/hr.

If I have no chiller then water temp would be 30-32 C for sure. The CO500 is set to 26 celsius and the actual tank temp is 26.4, so the chiller thermostat is reasonably accurate. The chiller cuts in about every 20 minutes and runs for 4 minutes each time. To me, this is quite OK.

[zorden]

what the flowrate? resun could not support high flowrate as compare to artica and daeil. Artical and daeil 1/3HP can support up to 9000L per hour.

[cowgum]

I tried 3600l/hr for my CL650....think C0500 should be able to handle at least 5000l/hr considering is has a 1" connection....don't think the flowrate can be that powerful to cause the chiller to burst or leak

lyz777 has about 900L if you calculate, larger than any of you have stated.

Not too mention his lights are 400W lumenarc with T5....

[lyz77]

Not sure if the agent can't solve the problem, whether will I be entitled for a one to one exchange?!?

Something is very wrong as the chiller can't cool down below 28 deg!!!

[macan]

If it's less than a week, get the agent to service the chiller.

Possibly either there is lack of gas or there is a leak in the compressor unit. Things might happen during delivery or shipping. Should not be the PCB Board.

[arcanehacker]

That is very wrong w the chiller. Is the output cold?

I have known of the same senior reefer who ran the C0500 to below 20C and his tank is abt 522. There is something really wrong w the chiller.

below 20c?? His corals from antartica isit?

[Tigger]

below 20c?? His corals from antartica isit?

no lah, just to test out the power of the chiller.

[lyz77]

Manage to get it solve by improving the ventilation. But I still notice it take pretty long to chill down even though the chiller specs state up to 1200L.

My tank plus sump is abt 1050L.

[Tigger]

Glad u solve the problem. What do u mean by pretty long? 2 hours continues running after 1 hr rest?

[lyz77]

Glad u solve the problem. What do u mean by pretty long? 2 hours continues running after 1 hr rest?

I notice the kick-in time is almost equivilent with the resting time! is that normal?

[lyz77]

what the flowrate? resun could not support high flowrate as compare to artica and daeil. Artical and daeil 1/3HP can support up to 9000L per hour.

May I kw where u get the info that artica and daeil chiller can support up to 9000L per hour flow rate?

On the manual, I notice the recommended flow is only 480gph which is ard 1800L per hour!