Chiller Problem

[hkching]

Hi bros.. I have an issue with my Resun CL650 chiller.

Seems that it cuts in too often. Sometimes about every 10 mins and runs for 5 mins.

Details on the configuration:

1. Pump used is Atman 104, 2000L/H (recommended is btw 900L/h to 2400 L/H)

2. Temperature set at 27-29. Chiller will cut in when temp is 29.

Attached is the pics of the connection to my chiller. Basically it input from and output to my sump, just different compartment. Any advise ??

[tineng]

errr....i think your return from the chiller needs to go direct to the tank not the sump....if not it will be quite hard for the temp in the entire system to stabilize

[Cedric]

You have METAL in your water!

[Ekia]

Hi bros.. I have an issue with my Resun CL650 chiller.

Seems that it cuts in too often. Sometimes about every 10 mins and runs for 5 mins.

Details on the configuration:

1. Pump used is Atman 104, 2000L/H (recommended is btw 900L/h to 2400 L/H)

2. Temperature set at 27-29. Chiller will cut in when temp is 29.

Attached is the pics of the connection to my chiller. Basically it input from and output to my sump, just different compartment. Any advise ??

Whats your tank size? Lights?

I'm currently using CL650 as well for my 4x2x2... set up my chiller in the same configuration.. my chiller dun cut in very often.. even when lights are on... furthermore I set my chiller at 26...

It will be better if the output from chiller goes straight into the tank but I find it quite unsightly.. thats why set up the same configuration as yours.. no problem at all.. I'm using Sicce Extrema for the chiller pump..

[hkching]

Oh shot....forgot about the hose grip...

Will remove it right away... Thanks for pointing it out Cedric...

[tineng]

Whats your tank size? Lights?

I'm currently using CL650 as well for my 4x2x2... set up my chiller in the same configuration.. my chiller dun cut in very often.. even when lights are on... furthermore I set my chiller at 26...

It will be better if the output from chiller goes straight into the tank but I find it quite unsightly.. thats why set up the same configuration as yours.. no problem at all.. I'm using Sicce Extrema for the chiller pump..

hummm...what your lighting conf???? i'm thinking of getting the CL650 to save some $$$$, but worried that it can take about 1000w of lights...

[Nemofish]

wat is ur return p/p flow rate??

BTW, last time i had the same problem wif u. water fr sump 2 chiller n fr chiller back 3 sump, 2 diff comp. cut in n out very often.

try reduce the flow into ur chiller by using the valve tat comes wif the atman p/p. it worked 4 me. play ard n reduce the flowrate.

hope tat helps.

[hkching]

I think Cedric was saying that I have a hose grip in the water. The stuff will rust if I don't take it out...

Tineng : The best thing is that I haven't even on my lights yet.. I'm still cycling. Of course I don't need to run the chiller now. But I wanted to test all my equipment prior to adding any LS. So the chiller cuts in often even w/o my MH lights on. But it goes off very quickly too. I'm going to have 2x250W MH, with fan to act as additional cooler.

Nemofish : I'm using a Ehiem 1262 as my return pump. I placed the return hose from the chiller just next to the pump so that the chilled water will be immediately fed back to the main tank I'll try reducing the flow rate. Maybe that will help. Thanks.

[Tigger]

I reckon it has to do with your atman pump used to cool the chiller.

I have the same problem like u when i used a cheapo china made pump rated 1400L/H. Inactual fact it may be giving less than 1000L/H. However, I changed the pump to Extrema and it works fine after that.

[Ekia]

hummm...what your lighting conf???? i'm thinking of getting the CL650 to save some $$$$, but worried that it can take about 1000w of lights...

I'm currently using combinations of 30W FL and 220W PL.... 1000W might be a bit stressful on the chiller.... yr tank size? 4x2x2?

[Ekia]

I reckon it has to do with your atman pump used to cool the chiller.

I have the same problem like u when i used a cheapo china made pump rated 1400L/H. Inactual fact it may be giving less than 1000L/H. However, I changed the pump to Extrema and it works fine after that.

I'm using extrema for my return too... what setting do u use for the pump? Full flowrate?

[aong]

Sorry ah, but where's the temp probe located?

Could it be deployed in somewhere where the temp really is dynamic?

ps: bad eyesight/spotting... might had missed it

[Tigger]

I'm using extrema for my return too... what setting do u use for the pump? Full flowrate?

Yes full., after taking into consderation of head loss etc.

[hkching]

hmmm...maybe will change to Extrema to run the chiller.

Need to re-budget... I will monitor for the next few days..

I think for the Resun model, there is no external temperature probe.

Correct me if I'm wrong....

[tineng]

I'm currently using combinations of 30W FL and 220W PL.... 1000W might be a bit stressful on the chiller.... yr tank size? 4x2x2?

my tank size is about the same as yours....4.5x2x1.5....guess i have consider to get the more higher end chiller....

[weileong]

Did you connect the inlet and outlet of the chiller wrongly?

[shoelevy]

hey

my cl650 also has the same problem

ons and cuts very frequently

but i reckon its my flow rate that is the problem because the instructions says best to use a flowrate of 900-2400L/hr.

i pump the water using my eheim canister filter rated at 950L/hour but with algal growth in the tubes and substrate in the filter...i think the flowrate is real low and i think that's y the chiller acts that way.

[hkching]

Dunno leh...but it think i'll play around with the flow rate first.

Maybe try around 1500-1800L/H (based on Nemofish advise).

Will let you guys know how it goes...

Any other advice? Extrema quite expensive so currently still dun want to consider changing the pump.

[shoelevy]

hey!

tell me this....do u haf another thermometer?....if so use it to measure the temperature and compare it to the temperature displayed on the chiller

do inform me of your result

[Nemofish]

Dunno leh...but it think i'll play around with the flow rate first.

Maybe try around 1500-1800L/H (based on Nemofish advise).

Will let you guys know how it goes...

Any other advice? Extrema quite expensive so currently still dun want to consider changing the pump.

hi, i too used a 2000l/h pump initially n faced the same problem like wat u described. i made use of the atman kits(valve) 2 reduce the flowrate by at least half.

IMO, no harm trying as there is no cost involved. moreover it oni takes abt 30 mins 2 tell if it works.

anyway, i hav already sold my 650 n replace wif PC. the 650 was making me worried everyday. eversince i damn it aside n switch 2 PC, i hav 1 trouble freed.

[shoelevy]

how come resun 650 make u worried?

[hkching]

The reading on my Fox Temperature Controller is 26.9 degrees (probe in main tank). The chiller is set to chill to 27 degree, but usually shows 28 on the display.

I guess the difference may be due to the equipment in the sump.

I've reduce the flow rate. Seems better. Will carry on to monitor.

No cost involve so no harm trying . Hope to switch to a better chiller in the future but budget constraint plus 'CEO' approval not easy to get nowadays...

[shoelevy]

ok

pls pm me how it turns out....then maybe i can solve mine too

[Nemofish]

how come resun 650 make u worried?

tat piece of so called "new batch" junk was running like a fighter jet. sometimes it will give out a loud sound like cannon firing when it cuts out, frightening my wife n children.

thanks god it's gone now..

[Nemofish]

The reading on my Fox Temperature Controller is 26.9 degrees (probe in main tank). The chiller is set to chill to 27 degree, but usually shows 28 on the display.

I guess the difference may be due to the equipment in the sump.

I've reduce the flow rate. Seems better. Will carry on to monitor.

No cost involve so no harm trying . Hope to switch to a better chiller in the future but budget constraint plus 'CEO' approval not easy to get nowadays...

if the chiller still cuts in n out quite often but not as often as b 4, try reducing the flowrate further.