Ariston Wall oven FM87F

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Just as a NOTE: When I bought my Panasonic microwave from AAFES, before I took it home, they sent it through their maintenance department to adjust the internal voltage. Power for the US is 60 HZ. Power in Europe is 50 HZ. Long Technical Explanation shortened: there's more energy (Heat) in 50 Hz than 60HZ especially when used in anything that uses high power. AAFES adjusted the internal power down to compensate and keep from blowing up the unit. Look for a fuse inside. Replace it, then ask AAFES to reconfigure the product for lower power or 50Hz.
Also as a note, many, dare I say most, clocks from the US count the HZ to count time. So if your US clock, say on your coffeepot timer, looses time overseas; it's probably losing 4 hours a day (do the math: 50 hz/60hz=83.333_%. 83.3_%*24 hr=20 hrs or 4 hours lost). So, if your time is set for 7AM coffee start, when you get that cup of coffee at 7:10AM, set your clock forward to 11:10 AM; or at 7PM, make sure it actually says 9PM. It will loose enough time by the next 7AM to be correct.

Hi. An AVR (auto voltage regulator) will not change the freqs from 50 Hz to 60 Hz. An AVR only changes voltage. The frequency in is the same frequency out.

Having said that.... I don't think your going to damage your unit as long as you don't run it for long periods time. I live in the tropics and use 4 different AVRs myself. I have had both 50z and 60 hz electronics and appliances running fine on 60 Hz for the last 7 years. Your call! Hopefully this was useful information.

u.s. is all 60 hz. not sure in the phillipines,the only issue is it will cook slower due to the lower input frequency, it shows no electronic control board in the diagram, sometimes a different freq. can throw electronics off i.e. the clock would run slower and not keep accurate time on 50 hz. as it would on 60hz.

Actually the voltage is the same, it's the frequency which is different. Running 60 cycle equippment on 50 cycle current is usually no problem. Most noticeble difference is that motor rpm will drop (by about 15%).

Charlie

If there's no obvious removable cover over the bulb (most often on the rear or side) and the owner's manual doesn't address it, then disassembly will be required.

You'll need to remove the outer cover (wrapper) to get to the bulb.

Always unplug a microwave before removing or installing any bulbs.

If it's an over the range type, remove the vent grille across the top and see if bulbs can be accessed there. There may be a panel on the bottom covering the light(s), instead.

If not, chances are you'll have to remove it from the wall, then remove the outer cover. If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

Once it's out of the wall, the outer cover (wrapper) will need to be removed, just as you'll need to do on a counter top model.

On a counter top model, be sure it's unplugged, but otherwise ignore the instructions above this paragraph.

You'll need to remove the outer cover (wrapper) to get to the bulb.

See these links before proceeding:
http://www.microwavedisplay.com/safety.txt
http://www.microwavedisplay.com/disassembly.txt

The screws you need to remove should be pretty obvious, but a special driver (such as a T20H type or GTXH20-100) may be needed.

Be sure to put all the screws back in the right holes, since some may be special grounding screws.

Bulbs can be had locally in most grocery stores, hardware stores, home improvement centers, and big box or department stores.

Many models use halogen lamps. You must not touch the new one with your bare skin, as the oils will shorten the bulb life.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Is there a wall behind where the microwave is to fit?

Most of these ship with a mounting plate and instructions for mounting to the wall. In fact, the wall bracket carries about 1/2 the weight, and the overhead cabinets carry the other half. The plates come with a good set of instructions for how to install.

Whirlpool is sending you to a distributor because they have to watch liability in this litigous world we live in..

If its an AC motor, the wiring will not matter. Look at the numbers on the motor. You will see a voltage rating, RPM rating and if you see the text "50/60 Hz" it is an AC motor and the wiring will not matter.

If its a DC motor, you will see a voltage rating, RPM rating and a + & - for the wiring. If you reverse the wiring, the turntable will turn in the opposite direction.

I'm not sure about all microwave ovens, but the ones I have worked on, the turntable turns in the clockwise direction.

Most likely, its an AC motor. Look for the "50/60" text. If its an AC motor, the wiring will not matter.

Please let me know if I can be of further assistance to you,

Good luck!

- Jim