Update on Master Electronic 1073.090 recirculation pump

[Ireland]

I finally got around to replacing the impeller housing with the updated one that Roger sent out (free of charge) and it has made a huge difference. I could not be happier with how much quieter the pump is now. Thanks

[rvitko]

No problem, I am glad it worked out, it was unfortunate but the first batch of pumps had the wrong housing installed and i am waiting for more replacements and we will get everyone taken care of.

[jthnhale]

Roger,

If you were to order a 1073.090 pump from lets say marine depot would it come with the old housing? Is there a way to know for sure you will get a new pump with the right housing? I want to switch to this for my return pump
thanks :)

[rvitko]

You wouldn't get a pump at all, I am holding them all until the parts can be replaced, I should get the replacement covers in 2 weeks.

[jthnhale]

thanks for the fast reply :)

I can wait two weeks, I just wanted to make sure I would get the updated pump.

thanks for the info.

[Daceman89]

ok i was thinking of selling my 1 year old iwalki 70 mdrlt and buying a tunze :

Master electronic 1073.160
(1073.160)

Pumping capacity: 15,700 l/h (4,142 US gal./h)
Energy consumption: 230 W
Pumping head: 5 m (196.8 in.)
Voltage / frequency: 230V/50Hz (115V/60Hz)
1073.160533.15
or a :
Master electronic 1073.140
(1073.140)

Pumping capacity: 13,100 l/h (3,456 US gal./h)
Energy consumption: 220 W
Pumping head: 8.50 m (334.6 in.)
Voltage / frequency: 230V/50Hz (115V/60Hz)
1073.140553.07

and would like to know how can i plumb this to my system correctly.
right now i have a 1" form sump then through uv 1" then up 1 flight using 1" pvc to my display where i tee off and run to 2 X 3/4"
returns. i think that the in and out from these two pumps are 1 1/2 inch so what can i do. should i rerun the line from basement to 1st floor display 1 1/2" and then tee off and reduce to 3/4 inch returns. i'm sure this will not work but i cannot redrill this tank with bigger bulkheads. it's a predrilled 180 AGA with two mega overflo's with 2 1" drains and 2 3/4 inch returns.
i dont think i'm turning my water over enough. how many times should i be turning my water over if my total volume is 350gals. i think my total head room is 14' thanks for your help.....
David

[rvitko]

You generally never want to restrict a pump intake so it has to be 1.5". I would have no more than 1800 gph in return flow. I think a GRI or Iwaki is your best bet unless you can go to 1.5" intake.

[Daceman89]

the intake would not be a problem. i can redrill my sump. the problem is how can i plumb in my 2x 3/4" returns. should i run a 1 1/2 pvc pipe up to my display and under the tank reduce the
1 1/2 to 3/4". and then what will my flow be. is there anyway i can redrill my overflo to 1" returns by just drilling from underneath the tank(glass tank AGA 180). and if possible would what would my flow be. would i have to make my drains from 1" to 1 !1/4 or 1 1/2. this is stressful.

[rvitko]

In all honesty, I don't recommend this pump for your application. If you want to do it anyway, I would run 1.5" and then right at the tank bottom branch into 2 3/4" pipes. I think the install is excessively complicated and you don't need that much flow. I don't have my flow charts handy as i am at home.

[Daceman89]

Thank you for trying for me roger, once again you have great cust service and thats the only reason i was trying hard to apply this pump to my system if it would work.
thanks again,

David

[rvitko]

I really like the GRI pumps in a smaller pump and they are quieter and more energy efficient than Iwaki in my experience.

[Dizzo]

Im interested in this pump, but need to know if it adds any heat to the tank??? And by when do you think it should be ready to purchase at marinedepot with the new part??

[rvitko]

As for the heat issue it is very energy efficient but I haven't used one and cannot give an answer. I am still waiting on the new housings.