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Model M98 Flow-Mate Automatic Cast Iron Effluent Sump Pump - 115 V, 1/2 HP
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MANUALS (4)
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Product Highlights
Description
Features:
- Corrosion resistant powder coated epoxy finish
- Durable cast iron construction
- Cast iron switch case, motor, pump housing and base
- No sheet metal parts to rust or corrode
- All castings are cast iron class 25-30 25000# tensile strength
- Stainless steel screws, guard, handle, arm and seal assembly
- Float operated submersible (NEMA 6) 2 pole mechanical switch
- Permanent split capacitor motor, oil filled and hermetically sealed, automatic reset thermal overload protection
- Bearings - upper & lower oil fed cast iron
- Carbon and ceramic shaft seal
- Entire unit pressure tested after assembly
- Watertight neoprene square ring between motor and pump housing
- Maximum temperature for effluent or dewatering 130°F (54°C)
- Impeller Type: Non-clogging, engineered plastic vortex impeller
- Passes 1/2" spherical solids
- No screens to clog
- 1-1/2" NPT discharge
- On point: 9-1/2", Off point: 3"
- Reserve Powered Design. For unusual conditions a reserve safety factor is engineered into the design of every Zoeller pump.
Specs
| Shutoff Head (ft.): | 23' |
|---|---|
| Cord Length: | 9' |
| Application: | Plumbing |
| Type: | Automatic |
| Material: | Cast Iron |
| Horse Power: | 1/2 |
| Flow at 5 FT Head: | 72 GPM |
| Voltage: | 115V |
| Amperage: | 9.4 |
| Hertz: | 60 |
| Phase: | 1 |
| RPM: | 1725 |
| Cord Type: | UL Listed Power Cord |
| Height (Inches): | 12" |
| Width (Inches): | 10-1/8" |
| Warranty: | 3 Year |
Questions?
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Product Reviews
Most Liked Positive Review
Great price for a great pump
Most Liked Negative Review
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Zoeller 1/2 HP
Supply house to the rescue
Zoller 98
Supply House is great
Better than others I have purchased before
Exactly what I needed and Trouble free ordering process
I would buy this product again
Good little pump!
Used it for years, highly recommended
great pump
This is a great pump
Product Q&A
10 QuestionsQ: Where get I get parts for my M98 Zoeller pump I need a new capacitor
Asked by John 2 years ago
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Verified Reply- SupplyHouseHello John, thanks for writing in. The correct capacitor part number for this would be SKU: 007642.
Q: Is this pump warranted for 1 year or 3 years? I see the previous question on the warranty states 1 year from date of purchase with a link to an instruction manual with a copyright year of 2009 however on the install instruction link currently listed with this pump which has a copyright year of 2011 the limited warranty states 3 years.
Asked by Chuck 10 years ago
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Warranties change all the time. But I have had three pumps from this mfg, 2 of the half HP and 1/3 HP. All seem well made and heavy duty. The smaller one was in a sump for at leat 15 years and worked every time. I replaced it as a precaution. The pipe broke off because the clamp rusted through. I like the throw of the float switch, The old HD pump had very long cycle times.
The Zoeller manual states 3 years from the date of original manufacture.
Q: can this pump be used where laundry water dumps into the pit in addition to rain water? Would all zoeller products be able to be used under these conditions? Also i believe I only have 15 amp breaker. Would this work?
Asked by Jason 11 years ago
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I believe your answer to all question is yes. This is a good pump. Regards Sent from my iPad
Laundry water should be no problem, although it might be possible for lint to build up over time- I doubt that would be a concern in normal situations. I would think any Zoeller sump pump would work as long it pumps fast enough to prevent the sump from overflowing when the washer pumps into it. A 15 Amp circuit will be fine (I use one)- the spec sheet says the pump draws 9 Amp. Clark
Q: 9.4 running amps is higher than most competitor products, but the startup amps of 29.2 seems out of line. I am not well versed on these ratings except that most house current is fed thru a 15 amp breaker. Can you explain what electrical requirements are for this product. It appears to my none electrical mind that you would need a 40 amp breaker and an appropriate size wire.
Asked by Syeve 11 years ago
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I'm pretty sure mine is on a 20A breaker. I'm sure it is not more because that is the highest in my box excluding the dryer and AC double breakers. I believe some breakers are designed do work with large transients like motor start without tripping. There is always a compromise of some sort between fast acting and false trips with glitches. You might check with your electrical supply store ask about what different types of breakers they offer. But 20A is plenty. Typically the 20A refers to the running number. There are different types of breakers and some of them are twitchy. But motors and breakers have been around for a long time, so it isn't much of a problem. dh
Just the facts! I installed my Zoeller Model M98 Sump Pump on July 14, 2013. It is plugged into a Ground Fault Circuit Interrupter on a separate branch circuit with #12 AWG copper wires running to my electrical box with a 20 amp breaker. During this period of time the pump has never tripped the breaker. For your technical question regarding 29.2 startup amps, I suggest you call the Zoeller Pump Company at 1-800-928-PUMP. Happy pumping and “MAY YOUR WATER FLOW IN THE RIGHT DIRECTION!”
It's a good question. I've had mine running on a 20 amp breaker and it's never been a problem.
Q: 9.4 running amps is higher than most competitor products, but the startup amps of 29.2 seems out of line. I am not well versed on these ratings except that most house current is fed thru a 15 amp breaker. Can you explain what electrical requirements are for this product. It appears to my none electrical mind that you would need a 40 amp breaker and an appropriate size wire.
Asked by Syeve 11 years ago
Add your answer
I would not worry about a high amp draw at start up, it is so brief that a 15 breaker has no trouble handling it. I purchased this pump a couple years ago to replace a two year old top of the line stainless steel & cast iron Flowmaster. The Flowmasters motor burned out and flooded my basement. During a pair of two week power outages I had the Flow-Mate running off a generator with a 20amp circuit. Even with two refrigerators, sewage pump, furnace, multiple lights drawing from the one generator circuit the Flow-Mate would not trip the breaker when it kicked on.
Hi, Sorry, I just plug it in. Maybe I should worry about breakers and such but I don't. It hasn't given me any trouble.
Q: How many watts does it pull.
Asked by Jim 14 years ago
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Verified Reply- PexSupply StaffThe M98 requires 29.2 amps or 3,358 watts for its initial inrush of current to start the pump (If sizing a generator this should be used). Once running, the M98 has a full load amp draw of 9.4 amps at 115 volts or roughly 1,081 watts.
1 horse power equals 746 watts so the answer is 376 1watts. If you have any other feel free Mike Sent from my Verizon Wireless BlackBerry
I don't know more than what the spec sheet says. It says 9.4amp running and 29amps starting. I'm guessing that is under load though. Watts = 9.4 x 115Vac = about 1100W. I find this hard to believe though. That implies a very inefficient motor. One horsepower is about 745W. Usually electric motors are at least 70% efficient if not much higher. This implies a 30% efficient motor. For my purposes, it only runs rarely with cold water. I had the Zoeller 1/3HP pump in another location for 20years with no problems. dh
Q: will upgrading the discharge from 1 1/2 to 2" increase the efficiency of output?
Asked by 15 years ago
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Verified Reply- PexSupply StaffThis would depend on the piping system (vertical rise, fitting used, horizontal run, etc.).
yes
Q: How many GPM does this pump provide? I need something fast and efficient for draining swimming pools
Asked by Vorcheck 15 years ago
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Verified Reply- PexSupply StaffPlease view the chart on page 2 of the following manual: http://s3.pexsupply.com/manuals/1265310986571/25326_PROD_FILE.pdf
Hi Vorchek, Well it depends on the 'dynamic head' (i.e., how far above the water level is the discharge point) - which will of course vary from (presumably) just a few feet at the start of the pool draining, and grow to perhaps 10 - 12 feet near the end. So at the beginning the pump will discharge at a higher GPM rate than will be the case later in the draining, when it is being asked to lift the water higher and higher above the water level. If my assumptions, above, make sense - you can expect an average of about 60 GPM over this range of 'vertical lift'. If you had a 30,000 to 35,000 Gallon pool, you would estimate something like eight to 10 hours... Hope this helps. Astrochron PS: Here is the flow rate vs. 'dynamic head' chart for the M98 pump - from the Zoeller website: www.ZoellerPumps.com/ImageDisplay.aspx?ProductID=92&ImageName=72curve1
Q: What is the size of the pump basin for this model ?
Asked by Bro. 15 years ago
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Verified Reply- PexSupply StaffAccording to the manufacturer, the minimum recommendation is 18" x 22" for simplex and 30" x 36" for duplex.
Q: Will this pump still operate if the water has dog hair in it? We run a dog grooming salon and are looking for a different way to remove dog bath water, so there's quite a bit of hair.
Asked by Tim O. 15 years ago
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Verified Reply- PexSupply StaffThis pump will still function with dog hair. There may be an increased risk over time of binding between the impeller and the seal, but the pump should be okay if it is used with caution. More abrasive hair (hog hair, for example) tends to cause issues with these pumps.