Mower will not ramp up to normal speed - Garden

DESCRIPTION The dual radiator fans are mounted to the back side of the radiator . The radiator fan consist of the fan blade, electric motor and a support shroud which are all serviced as an assembly.
OPERATION COOLANT TEMPERATURE
A/C PRESSURE TRANSAXLE OIL TEMPERATURE Fan Operation Speeds: Initial Max Initial Max Initial Max Fan On: 104°C (220°F) 110°C (230°F) Fan Speed Duty-Cycles (Ramps-up) from 30% to 99% 1,724 Kpa (250 psi) 2,068 Kpa (300 psi) Fan Speed Duty-Cycles (Ramps-up) from 30% to 99% 96°C (204°F) 111°C (232°F) Fan Speed Duty Cycles (Ramps-up) from 30% to 99% Fan Off: 101°C (214°F) Fan Speed Duty-Cycles (Ramps-down) from 99% to 30% 1,710 Kpa (248 psi) Fan Speed Duty-Cycles (Ramps-down) from 99% to 30% 89°C (192°F) Fan Speed Duty Cycles (Ramps-down) from 99% to 30%

no details as to make , model, year so the quickest answer is to call your service dealer and ask them

These Ptac units are advance system that are designed with variable speed motors that modulate in order to save energy, This is normal operation, because starting a motor at a lower speed rather than the conventional high speed will save energy, which translates to saving you money. As the load increases (heat) on the condenser coil, the fan will ramp up accordingly.

SOUNDS LIKE THE HI SPEED JET IS CLOGED UP

Some banging or knocking during the ramp up to spin speed in this washer is normal. It is difficult to determine whether your washer has a problem or not based on your description. This banging lasts for varying amounts of time until the load is balanced and the washer ramps up to the full spin speed. If the load can not be balanced on the first attempt, the washer will ramp down and then tumble and attempt again to ramp up to speed. This may be the same thing that you are hearing when your washer ramps up to spin speed. Since the washer does spin at the full speed, there is not likely a problem with the washer. The components are designed to withstand repeated vibration and reasonable banging or knocking. The washer will vibrate to some extent at high speed. If you feel that the vibration is excessive, I recommend that you check the stability of the leveling feet. Press down on the diagonally opposing corners of the washer to check for play. If the washer rocks at all when conducting this test, I recommend that you adjust the leveling feet to eliminate this play even is the washer is not perfectly level after making this adjustment. This may help reduce the banging and vibration. Other than that if it is brand new call the people who you purchased it from so you don't void any warranties by taking it apart.

If its in good condition you might be able to but be careful so mower doesn't fall on you. I've used my car ramps and backed the mower up the ramp and was able to do it safely. If you have any difficulty removing the blades, then I'd take the deck off. It really isn't that hard to remove the deck.

don't advise tipping it over on its side. You can run it up car ramps, jack it up, eigther way should give you enough room to get to blades from the bottom. I use a comealong hooked to the rafter and lift the front end and stand mower upright real good acess, easy on the back.

the main drive belt is most likely worn or ourt of adjustment.look in owners manual for procedure to correct this

Id say to replace the blade clutch.Thank you for asking and I hope this helps you.Please leave me a 4 thumbs up.

I didn't see what these drive application was for. Is it for a fan or pump?
I assume you've entered all the motor data, FLA, RPM Voltage, KW etc. If you have three of these you must have experience with these drives. I've only used these drives on fans, and once on a pump.
Have you tried the Automatic Motor Adaptation ? (AMA) Have you programmed the PID start speed? Read the note about this feature as I think you have to have min speed set at 0 .I know you said you tried changing the ramp up time. If this is on a pump, the ramp up time may be too slow causing the motor to draw too much current when it's pumping way down on the pump curve. People would have a tendancy to make the ramp up time loonger, to make the load easier to start, however the torque requirement on a slower speed could be so high, the motor is overloading. I'd like to know what you find out, pleas post your solution. Have you contacted Danfoss or your local rep?