By Carvin



Model # 94027110

Alternate Part #'s 1UMF-S, 1UMFS, 9402-7110

Product Description

PureLine Prime Pump


  • Patented air-cooled heat sink allows pump to run dry without damage to shaft seal. UNCONDITIONAL ONE YEAR WARRANTY AGAINST SEAL FAILURE.

    Exclusive dual Ring-Lok™design gives "tool free" access to strainer basket and pump internals.

    208 cu. in. (3411 cm3) heavy-duty strainer basketwith exclusive priming tubefor superior priming capabilities.

    Exclusive flap prevents debris in the pump strainer, skimmer basket and filter from flowing back into the pool. The flap also prevents residual hot water in the heater from flowing into filter and causing damage to grids, valves, gaskets, etc.

    Internal ribs in large strainer basket assure flow, even when filled with leaves and debris.

    One-piece casee   liminates bolts and gaskets and provides for quiet operation.

    Flexible connections- 2" (51 mm) FNPT or 2" (51 mm) unions (included).

    Floating eye seal   between closed impeller and diffuser maximizes efficiency.

    Maximum water temperature 104 °F (40 °C).

    Energy saver motors(1/2 HP - 3 HP) are standard on single speed units.

Dimensions of the Jacuzzi Magnum Force pump
             jacuzzi_magnum_dimensions.jpg (11973 bytes)

Performance of the Jacuzzi Magnum Force pump

Gallons per Minute vs. Resistance to Flow (Feet to Head)
Horsepower 30ft. 40ft 50ft 60ft 70ft 80ft 90ft 100ft
3/4 HP 55gpm 46 34 15 - - - -
1.0 HP 74 68 62 54 45 33 - -
1.5 HP 85 79 72 65 56 43 - -
2.0 HP - 108 99 90 80 69 51 31
2.5 HP - 120 111 102 92 80 67 52


Product Specifications

1 HP
Port Size:
2 in.
Union Connectors:
2 inch included
Service Factor:
California Title 20 NON COMPLIANT (Not available for sale in CA)

?     Asked on 4/23/2015by Steve

Is this refurbished?

A  Answered on 4/24/2015 by InyoPools Product Specialist Robert M.

Steve - Our Jacuzzi Magnum pumps are brand new and not refurbished.

?     Asked on 5/20/2015by Inyo Visitor

my pump has a high pitched winning sound during operation, could it be bearings?

A  Answered on 5/20/2015 by InyoPools Product Specialist Lennox H.

That high pitched winning sound is a key indicator that the bearings are failing in your motor.

?     Asked on 6/11/2015by kelli

what size frame is this?

A  Answered on 6/11/2015 by InyoPools Product Specialist Patrick P.

Hi Kelli the Jacuzzi Magnum uses a 56J frame motor. The barrel of this motor measures roughly 6-3/8" in diameter.

?     Asked on 7/12/2015by cris

My Jacuzzi Magnum pump just died.(model #1 MF-S). Should I replace it with the same model or is there a better, variable sped, modelthat would work and be more energy efficient?

A  Answered on 7/12/2015 by InyoPools Product Specialist Patrick P.

Hi Cris, You will save on your operational costs by going with a variable speed pump. Our article on How Much Does a Pool Pump Cost to Operate goes into this in greater detail. The Speck Variable Speed Pump would be a good option for replacing a Jacuzzi Magnum Pump with a variable speed pump.

?     Asked on 8/20/2015by Dean

Does this pump recycle itself on and off as an energy saver feature?

A  Answered on 8/24/2015 by InyoPools Product Specialist Lennox H.

Hi Dean, The Jacuzzi Magnum Pump 1 HP Pump can not shut itself on/off unless it starts to overheat, otherwise it will go on/off if it is wired to a timer.


Est. Repair Time

1 to 2 hrs

Tools Needed

Screwdriver, plumber's tape for pvc connections

1     0

our pump failed

Written on 12/14/2017 by Guest

We ordered a new pump from Inyopools. It arrived in a few days. The pump did not come with a cord so we had to take the cord off the old pump. Basically this was just a matter of attaching the cord, attaching the plumbing connections from the pool and to the filter, plugging it in, priming it and turning it on. No problem. We did have a friend of ours (an electrician) check the wiring to make sure we had done it correctly (we had). This pump replaced an older Magnum pump so the plumbing was easy to reconnect.

Were these instructions helpful? 


Est. Repair Time

1 to 2 hrs

Tools Needed

Screwdriver, electrician's pliers

The pool pump was making some very unusual noises (bad bearings)

Written on 12/28/2016 by Michael M.

Start with electrical. Turn off power, check voltage; both conductors phase to phase and phase to ground . Check voltage again, even check between the phase conductor and the dirt (just to be sure). Disconnect power conductors within the motor and remove from housing. Plumbing; loosen the two union connectors and the pump and strainer housing are ready to remove. Reversing the process is straightforward; you will need to ensure the threaded adaptors are not overtightened, you can damage the pump. The time spent was more about running around finding tools and plumber's tape than actual hands on the pump. Well prepared and organized, 45 minutes.

Were these instructions helpful? 


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 (Average 4.82  out of 5 stars)
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