Want to replace with either a two speed or variable speed motor, and suggestions?

Question 1

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Bosch 11318EVS SDS-max Demolition Hammer. The variable speed not working. I replaced the variable speed unit and still not working, just running on high?

If you've replaced the variable speed unit in your Bosch 11318EVS SDS-max Demolition Hammer and the variable speed is still not working, there could be a few potential reasons for this issue. Here are some steps you can take to troubleshoot and address the problem:

Check Wiring Connections: Ensure that all wiring connections related to the variable speed control are properly connected and secure. Loose or damaged wires can disrupt the variable speed function.
Control Switch: The control switch itself could be faulty. Test the switch to make sure it's functioning as intended. Use a multimeter to check for continuity across the switch terminals in different speed settings.
Speed Control Potentiometer: The potentiometer, which is responsible for adjusting the variable speed, could be malfunctioning. Test the potentiometer with a multimeter to ensure it's changing resistance smoothly as you adjust the speed.
Electronic Control Board: The issue could be with the electronic control board that governs the variable speed function. Inspect the board for any signs of damage, such as burnt components or solder joints.
Brushes and Carbon Motor Contacts: Worn brushes or carbon motor contacts can affect the motor's performance and, consequently, the variable speed control. Check the condition of the brushes and motor contacts and replace them if necessary.
Power Supply and Voltage: Ensure that the tool is receiving the correct power supply and voltage. Incorrect power supply can affect the tool's overall performance.
Manufacturer's Support: If you've exhausted your troubleshooting efforts and the variable speed is still not working, it's advisable to contact Bosch customer support or a professional tool technician. They can provide more specific guidance based on the model and diagnose the issue accurately.
Professional Repair: If the issue is complex or involves internal components, it might be best to seek the assistance of a professional tool repair technician who has experience with Bosch power tools.

Remember that working with power tools and electrical components carries inherent risks. If you're not comfortable or experienced with tool repairs, it's recommended to seek professional assistance to ensure safety and prevent further damage to the tool.

Aug 04, 2023 • Bosch Drills

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My Ruud Achiever 90 Plus MDL: UGRA-09EZAJS is 17 years old. Runs fine but wonder if I should replace the blower motor and go to a variable speed motor

The variable speed DC motors you describe do use less power but cost 14 times more too, not worth it especially with you motor running!

Oct 12, 2022 • Ruud Heating & Cooling

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I purchased a 3 phase electric motor by mistake. but i needed a single phase, anyway to wire it down?

You cannot make a 3 phase motor into a single phase motor.
You could, ( as you suggested), buy a single phase to 3 phase inverter. Even a 'variable speed drive' VF (variable frequency drive) inverter for greater flexibility, but depending on the size and purpose of your motor the cost might prove to be prohibitive.

May 14, 2018 • Microwave Ovens

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I have a 35 year old Ctx 70 conveyor pizza oven with an analog conveyor speed control that is bad. Anyone know where I can find parts or retrofit?? Searched Internet but no help

they are available but you will have to source a unit that you can adapt to the machine
go google and type in---analog speed controls -- and there are pages of sites that sell them including e-bay
you should select a site then contact them direct for suggestions as to a suitable replacement unit.
basically all they are is a variable resistor ( similar to a volume control in a radio) but on a bigger scale
they are used as the wire feed motor in mig welders,vehicle speed controls in mobility scooters, golf carts ( accelerator ) and numerous industrial applications where a variable speed from an electrical motor is required in production

Oct 01, 2015 • Ovens

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The blower doesn't work for the a/c

Check fuses, then the relay. Fused power to the lower speeds, and a relay sends power to the fan for high speed. Some cars have an electronic blower motor for a variable speed system. The motor could be bad, or the motor board could be bad, if you have a variable speed blower motor. Very expensive to replace. 250 to 400 dollars. good luck.

Aug 16, 2013 • 1998 Lincoln Mark VIII

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I have a E2EB-017HA air handler and I want to change it to a variable speed motor. Is this possible

Some companies do sell a variable speed kit. It includes the motor and controls. Get your model and serial number of your unit and contact your local Payne dealer. The can locate the proper kit if available for you.

Feb 03, 2013 • Intertherm E3EB-017H Furnace 17Kw 2

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1answer

I have 3 ceiling fans with variable speed control, and 3 of them have been running quietly with variable speed control for 10 years until 1 of them started humming on medium speed.

The Humming indicates the motor itself is going out. Its going to need a replacement soon.

Jun 27, 2010 • Dryers

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Spin half the speed

Hi.

Depending on the make and model, and type of washer, you may need to test and eventually replace the following parts:

On top loads:

Variable speed motor .
Motor coupler.
Transmission.
Control board.
Motor control unit (if present)

On front load :

Variable speed motor .
Motor coupler.
Control board.
Motor control unit.

On top load the problem is often transmission or variable speed motor. On front load MCU or motor.

Dec 14, 2009 • Washing Machines

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1answer

The motor on my dremel 395 works but the bit doesn't turn

there is a coupling between the motor and the spindle that has probably cracked or stripped out. I suggest going to Dremel.com and getting an original replacement part for this. They are not hard to install.

Sep 02, 2009 • Dremel Variable - Speed Multipro Rotary...

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1) No variable speed; 2) Grinding sound when using <high2speed>, although drill still works

starting with the variable speed the switch part # is 2607200457 and list for 47.58, the gearbox part # is 2606200930 and lists for 75.90 and lastly the motor part # is 2607022865 and lists for 75.90, the grinding could be the motor bearing going out or the magnets cracked, if you want to tackle this I suggest going to Boschtools.com and on the left side towards the bottom type in your model number so you can look at a breakdown of this tool. Before I started spending that kind of money I would think about possibly replacing it. If I have helped you would you please rate my response accordingly and Thank you.

May 07, 2009 • Bosch 33618 1/2" 18v Cordless Drill Tool...

Question 2

Mike Tellegen

AO Smith Master 1,631 Answers
Posted on Apr 16, 2015

Mike Tellegen

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You will need to install a special controller if you change to a 2 speed. Because there will be an additional wire (4 wires vs. 3) with a 2nd speed to operate.
If you go with a variable speed motor, then again, a special controller will be required to utilize a reo-stat type of switch with will allow a selection of slowly increasing voltage to motor which will in turn allow the motor to spin quicker.

Instead of the hassle above, just go with a "One deal package" all nicely bundled ready for installation. It has it all within it - What...? A variable speed complete pump! That will be the sweetest thing for you if you are looking to go that route!
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Want to replace with either a two speed or variable speed motor, and suggestions?

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Mike Tellegen

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Bosch 11318EVS SDS-max Demolition Hammer. The variable speed not working. I replaced the variable speed unit and still not working, just running on high?

My Ruud Achiever 90 Plus MDL: UGRA-09EZAJS is 17 years old. Runs fine but wonder if I should replace the blower motor and go to a variable speed motor

I purchased a 3 phase electric motor by mistake. but i needed a single phase, anyway to wire it down?

I have a 35 year old Ctx 70 conveyor pizza oven with an analog conveyor speed control that is bad. Anyone know where I can find parts or retrofit?? Searched Internet but no help

The blower doesn't work for the a/c

I have a E2EB-017HA air handler and I want to change it to a variable speed motor. Is this possible

I have 3 ceiling fans with variable speed control, and 3 of them have been running quietly with variable speed control for 10 years until 1 of them started humming on medium speed.

Spin half the speed

The motor on my dremel 395 works but the bit doesn't turn

1) No variable speed; 2) Grinding sound when using <high2speed>, although drill still works

Not finding what you are looking for?

1 hp 3450rpm 56Y Frame 115230 volts Square Flange Energy Efficient Pool Pump Replacement Motor Century (Pentair Whisperflo)

Bosch 11318EVS SDS-max Demolition Hammer. The variable speed not working. I replaced the variable speed unit and still not working, just running on high?

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Trustworthy Expert Solutions

Want to replace with either a two speed or variable speed motor, and suggestions?

1 Answer

Mike Tellegen

Add Your Answer

Attachments: Added items

Related Questions:

Bosch 11318EVS SDS-max Demolition Hammer. The variable speed not working. I replaced the variable speed unit and still not working, just running on high?

My Ruud Achiever 90 Plus MDL: UGRA-09EZAJS is 17 years old. Runs fine but wonder if I should replace the blower motor and go to a variable speed motor

I purchased a 3 phase electric motor by mistake. but i needed a single phase, anyway to wire it down?

I have a 35 year old Ctx 70 conveyor pizza oven with an analog conveyor speed control that is bad. Anyone know where I can find parts or retrofit?? Searched Internet but no help

The blower doesn't work for the a/c

I have a E2EB-017HA air handler and I want to change it to a variable speed motor. Is this possible

I have 3 ceiling fans with variable speed control, and 3 of them have been running quietly with variable speed control for 10 years until 1 of them started humming on medium speed.

Spin half the speed

The motor on my dremel 395 works but the bit doesn't turn

1) No variable speed; 2) Grinding sound when using <high2speed>, although drill still works

Not finding what you are looking for?

1 hp 3450rpm 56Y Frame 115230 volts Square Flange Energy Efficient Pool Pump Replacement Motor Century (Pentair Whisperflo)

Bosch 11318EVS SDS-max Demolition Hammer. The variable speed not working. I replaced the variable speed unit and still not working, just running on high?

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