Safety Parts Service Q&A The Collection MachinesWhen I started this page all those years ago to chronicle the collecting of the RR series, I had no idea such a cult following would ensue. Soon, emails poured in from all over the US, and even a few international messages. “We love our Amana!,” “Where can I find part X,Y,Z,” “What year is my machine?” and “Can you fix mine?”.

It was then that I realized there’s little support for these workhorse machines. Even harder than finding service information or parts is trying to track down all the models and variations produced. My goal has been to do something about that and document it here.

Dripping with chrome, exuding class, style, and workmanship, the Amana Radarange was the first popular home microwave oven. Introduced in 1967, it set the bar for the competition for years to come.


Safety
Contrary to popular belief, there is nothing “nuclear” about a microwave oven. Food is cooked by the heating action of radio waves causing water molecules to vibrate at high frequency. The radiation is non-ionizing; you won’t grow a third eye. That said, a microwave oven cannot differentiate between a hamburger patty and your arm, so do not defeat the safety interlock switches on any machine.

Even more importantly, the magnetron tube operates at 4 kilovolts and with enough current to be deadly. Never operate a microwave with the cover removed, and never assume the HV bleeder resistor is 100% effective. This is one area where you need to know what you’re doing. Information and parts from this website are for educational and professional purposes only. Please leave servicing to a qualified technician.

Replacement Parts and Trays
The last ‘chrome door’ models are now over 30 years old. Parts are no longer available, and unfortunately, the techs that worked on them when new have mostly retired. Most appliance dealers will tell you it’s not worth fixing, and frankly, they have no idea how to fix them. That’s a shame, because these machines were designed to be repaired, and can be kept operating practically indefinitely. The majority of parts listed below are of the used-good variety (and are likely better quality than if a new replacement was even made).


For all parts, please contact me with your request and I will reply promptly. I charge only honest shipping rates. Check or PayPal accepted.

By far the biggest request I receive is from those looking for a replacement tray. Unfortunately, these have not been made for many years and are no longer available new. The good news is I occasionally come across good used trays in both the early and late styles and offer them when I can. Early trays contain a warning about operating the machine without the tray present. Late trays have the word FRONT embossed in the glass.

The "Front" style tray fits most if not all Touchmatics, Cookmatics, RR-xx and RRL-xx series radaranges (1968-early 80's). They run $25 plus USPS shipping and are carefully packed to arrive at your front door in one piece. Early trays are more difficult to find and sell for $30.

  For parts and service, email me at:

 
Early Trays (RR-2 to RR-4D) $30 + S&H.
Late Trays (RR-4D to End of Production) $25 + S&H
Knobs, switches and trim pieces are often available on a model by model basis. Contact me.
Mechanical Timers (as available) $30 + S&H
Interior Splash Shield – Both early and late styles are available for replacement. No case removal needed. $25 + S&H
Stirrer – The metal “fan blade” assembly above the interior splash shield is known as a ‘stirrer’. While I’m not sure how one might fail, if you need a replacement, I have both the early and late air driven styles available. $10 + S&H
Door Seals/Chokes-
The second biggest request I receive is for replacement door plastic interior pieces. These are very tough to find without cracks of delamination (deterioration appears to be the result of high temperatures and prolonged humidity).
See “doors” below.
***The below items require access to the internal parts of the machine for replacement and should be performed by a qualified technician only! Dangerous voltages may be present, even with the machine off and unplugged. Do not attempt repairs yourself!***  
Magnetrons – Restore cooking performance to new!
I carry both new and good-used magnetrons for machines circa 1977 and newer (nameplate marking on rear will read 1500 Watts for these machines).
Good Used: $40 + S&H
New: $75 + S&H
Control Panels See the Repair Service
Doors – Door integrity is essential to safe machine operation. If your interior plastic is delaminating, cracked or burnt, the safest solution is to R&R the door with a complete assembly. While the job is straightforward, it does require case removal.
Chrome door complete with glass, arms and hinge assm:
$50 + S&H
Door Springs - Too many machines hit the curb because a broken door spring caused an interlock switch to open and trip the fuse. Springs are available for the RR and RRL series. $5 + S&H
Solenoid/Lock – Good used door lock solenoids are available. $10 + S&H

Temp Sensors/Switches- Cavity and magnetron overtemp limit switches are available in button and plastic rivet styles. Post-1980 machines use thermal fuses that remain open after overtemp.

$10 + S&H
Interlock Switches and Assemblies- These switches and assemblies vary by model and production run but are mostly equivalent. Contact me for your exact needs. $10-20 + S&H
Blower Motor – These periodically fail, which is a bad deal because it can stress the magnetron and force an overtemp trip. Blower motors are available for most models. Good used: $25 + S&H
Plastic shields/housings/covers Contact Me.
Temp Probes: Specify Candy or Regular. $10 + S&H
Need something you don't see listed? Contact me! Contact me.

Repair Service

Do you have a Touchmatic machine with an erratic display? Does it randomly change time, or get confused when you’re inputting a cook time? Does it flicker? The problem is usually decades old capacitors that filter the control panel power supply. The good news is that if the panel isn’t totally dead, it can usually be saved. Replacement panels are non-existent, but if you have a Touchmatic or Touchmatic II, your panel can be removed from outside the machine and sent in for an overhaul. Standard rate is $40 including parts. Other panel repairs can be addressed on an individual basis.

Q&A
How do I change the lightbulb? Why can't I put metal in my Radarange? What's with the temp probe?
Click HERE to see the most common RR questions.

The Collection
It started innocently with a garage sale find (though I grew up with a Touchmatic) and ended up something like this…

There are a lot more Radarange models out there than you think. Early machines (RR), Touchmatics, streamlined versions of the classics (RRL), built-in wall ovens with mechanical timers and digital timers (RO), countertop-saving under-cabinet models (MVH), commercial and industrial workhorses and even combination convection units (RMC)! Factor in the engineering and appearance updates and you soon realize making sense of all these machines can be a bit of a task. So to keep it simple, my focus is now on the chrome-door machi
nes....mostly because they're the iconic microwave one thinks of when the word Radarange is mentioned, but also because they're the most fun too.

A little background- The first machines were full-power only and mechanically timed. It took a couple models but defrost was introduced as the next major feature by cycling the amount of time the magnetron was "on" each minute. Early machines do this via a motor with cam that achieves a 50/50 duty cycle.

Next came the Cookmatic series, which essentially cycled the magnetron electronically and allowed the user to set the percentage of time for a given cycle the magnetron was powered via a slide control. Touchmatic debuted with the RR-6 allowing digital time entry, but only a simple defrost function. The temp probe, programmable cooking and digital Cookmatic levels were to come.

By the end of the 70's, some machines were given an updated control panel and vacuum fluroescent display rather than red LEDs and these machines were coded with a "TD" after the model number. Similarly, it appears RR-9's and RR-10's (Touchmatics and Touchmatic II's) could be had in the old-school chrome look or the stream-lined '70s smoked-plexi variety all at the same time. The "new" look has an RRL prefix rather than RR. Dates of machines in the collection confirm this phenomenon. There was also an RRH-10 model with a Heritage badge under the front controls that appears almost identical internally to the standard RR-10, but perhaps was a last hurrah in the chrome-door series while the new cost-reduced models took over. Overall, there are A LOT of different model numbers.

 
Needed for Collection

RR-1  (1967)

Here's what I know... The RR-1 has an electromagnet for the magnetron and weighs in at 90lbs according to Amana service literature. These units have two buttons- START (green) and LIGHT (blue). Also, the timers are additive so you can get 5 + 25 min total. The 5 minute dial is on the bottom, while the 25 min dial is on the top. Early RR-1's have a matte chrome finish along the top and bottom horizontal recesses of the front. How does one stop the machine? By opening the door.

RR-2  (1968)

Essentially an RR-1 with the addition of a STOP button, however if this is not to your liking you can still open the door to stop cooking. The lower timer has been bumped up to 30min. Upper and lower timers swap locations where they will stay through the 4D series. The perforated door screen continues to lack clear glass and plastic panels on either side, making splatter cleanup difficult but letting cooking aromas waft out. Early RR-2's lack an end of cycle buzzer, while later ones make it standard, and have a slide switch under the bottom lip of the control panel to disable it (as it will sound continuously until you hit Stop). If you don't find your RR-2 model tag on the back, check on the bottom (how convenient!)

 

RR-3H (1971)

While the early RR's had dual interlock door protection, a new government mandate effective for 1971 required that one of the interlocks be mechanical in operation. The 3H was introduced with a sliding LOCK lever at the top of the control panel to be compliant. The Start button will not physically engage unless this lever is locked. When unlocking, it automatically pops the Start button back out and stops the machine. From my research, the RR-3H was offered for one year only until the introduction of the RR-4.

Click HERE for the 3H Operating Instruction Page

 
Did you know?
The early RR's have an air filter that should periodically be cleaned. These machines draw air through a vent in the bottom of the machine. Most of the time these filters have gone missing, but it never hurts to check. Be sure to pull your glass tray before you tilt the machine to avoid breakage. Clean filter with soapy water and air dry.
RR-4 Introduced in 1972, the 4 loses the LOCK slider and in its place is an electrically operated solenoid that prevents the door from opening during cooking. This solenoid was used up through the end of the RR-series. The LIGHT button is no longer blue, but white. The green Start button gets a hue adjustment.
      -Panel in Collection - Machine Needed-
 

RR-4D (D for Auto Defrost) According to my records, the 4D was released in 1974, and the 4DW in '75. The defrost function of the 4D is very distinctive as the magnetron is cycled on/off at a 50/50 duty cycle. The 4D also has a permanent-magnet type magnetron which reduces weight and complexity.

RR-4DW After August 7th 1974, the gov't mandated that the (already required) secondary interlocks disable the machine if they were to fail or were bypassed. The idea being that the machine would then remain out of service until an authorized tech could make the necessary repairs since gaining access to the power-electronics requires drilling out a rivet and breaking a warranty seal. Also, up until this point, all RR's had motor driven stirrers, the 4DW introduces an air driven stirrer and eliminates this second motor.

Note: The 4D & 4DW models must have proved very popular as there are quite a few of these still going strong in kitchens today.

 

RR-5B* An interesting machine, nowhere does it say Cookmatic, but it offers Defrost and Slo-Cook. Note the "scrollwork" below the exhaust vent. Date of 1981. Includes end of cycle bell, but no COOK light. If someone were looking for a no-frills, dead-reliable machine, this would be it.

RR references indicate a COOK light on Canadian 5Bs only, perhaps to satisfy Canadian regulations?

*This machine was made in 1981 and chronologically comes after the 9TA and 10A models.

RR-6W  First of the digital RR's. Lots of chrome, digital controls, and a neat egg timer function. Punch in your desired time interval, hit the Timer button and the display counts down to 0, followed by a pleasing electronic tone. Manufacture date of 1976.

RR-6 Also in collection, appears identical to the 6W, including internal components. Clearly the W stands for some change.

 
Needed for Collection

RR-7/7A The Cookmatic Series featuring a 5 minute timer, a 30 minute timer and a Cookmatic slider that controls cooking on-time from 10-100% each sec. via an electronic variable power control module. Circa 1979. Needed for collection. (RR-7BET is the 50Hz version of the RR-7). Weight: 81 lbs. net.

7A Conversion According to Amana literature, there was a conversion panel made available July 1983 that replaces the lower timer with a power level knob (Percent Timer) and eliminates the Cookmatic slider. It provides the same functionality, but the Cookmatic control is internally motor-driven rather than electronic. 

RR-7B The 7B appears to be equivalent to a 7A Conversion. It features a 30 min. timer on top and Cookmatic Percent Timer on bottom (10%-100% on-time). Circa '82.

An indicator located in the area between the dials lights when the magnetron is powered on.

Needed for Collection

RR-7DA I'd like to see one of these. It appears to be a 5B setup but has a COOK light and an internal surge relay to lessen power surges to the transformer and thus keep kitchen lights from dimming during defrost cycles.

Did you know?

Introduction of the temp probe: If you grew up with a Radarange, you know that lurking somewhere in the kitchen junk drawer was the Amana temp probe. There's actually two different probes- those with brown cords are for cooking and are rated up to 190F. Probes with white cords (that were sold separate from the RR) are for candy-making where temps are 230F or higher.

RR-8A A very feature-packed machine! Feb 1979, this RR features an electronic Cookmatic slide to control power from 10% to 100% like the 7A, but adds temp probe capability with a front-lit setpoint control and needle indicator for measuring food temp and hold operation. When the probe is plugged in, the Temp Control scale illuminates and the pointer indicates current temp. Turn the dial to increase the red area behind the scale and the machine will run to meet that temp, then enters a cycling hold-mode.

RR-8B Consider this a 7B with an electronic temp slider at the top with hold LED. When the temp probe is connected the timer's contacts are bypassed. Note the slider is for temperature, not power level like the original 7A.

RR-8T  I have a theory this model was introduced to use up existing parts. It has the functionality of an RR-9 but the touchpad has been cost reduced- it uses dome switches rather than glass, and the LEDs have been replaced with a vac fluorescent display like the 'TD' series. There was also a 9TB released the same year with similar appearance. October 1981.

RR-9 Combines the touchmatic features of the 6W with the variable cooking slider of the 7A. The 9T (below) improves on this concept by going completely digital and incorporating the temp probe.

RR-9T This is the machine most people recognize instantly as a "Radarange". This landmark machine is the first to debut the Touchmatic name, incorporates both a digitally controlled Cookmatic Level, a digitally controlled temp probe and the capability to store two cooking programs. July 1978 and used daily.
RR-9TA Between 1978 and 1981, a number of internal changes were made in the RR series including Cookmatics, mostly related to ease of assembly. The magnetron and power supply are still high quality. Machines with translucent splash shields are of the revised style while machines with solid-white splash shields are of the older design. 9TA's also have a cost reduced control panel (internally). And externally, the fill-in paint border of the 9T has been eliminated. The 9TA and 10A weigh in at 73 lbs. net.

RR-10 The first Touchmatic II, manufacture dates suggest both the 10 and 9T were sold concurrently. The 10 adds two additional cooking programs for a total of four. There is also a programmable Start Time feature allowing one to set up cooking paramters and have the machine start cooking at an exact time up to 12 hours in advance. Sounds a little odd for a microwave, but with the temp probe, 4 programs and Cookmatic, one could defrost, slow-roast and temp-hold a ham over the course of an hour and have your meal ready as you walked in the door. This machine was manufactured Oct 1977.

RRH-10  Yes, that's the correct model number. Obviously the 'H' is for Heritage, but what's interesting is that this machine has a 10 "bordered" panel but 10A colored controls. It was also built in Dec 1978, yet the chrome door models continued to be offered for several more years. Internally, the RRH-10 is identical to the 10.

RR-10A  The 10A features the same engineering changes as the 9TA (note the lack of painted border on the control panel). The button backgrounds are now an orangy-brown.The case is woodgrain vinyl. As with most Radaranges, there were multiple revisions (see numbers below).

And so, with the 10A, we reach the end of the line of the true chrome-door Radaranges.

P74750-1M: Initial release.
P74750-2M: Aluminum Transformer. Filament preheats 3 seconds before HV.
P74750-3M: Copper Transformer. Filament preheates 3 seconds before HV.

In the late 1970's, Amana was preparing to debut a new look for the Radarange line, still using the same tried-and-true technologies of the RR series. The first update was known as the RRL's, and were sold concurrently with the chrome door models. These are rectilinear in design without excess chrome or other adornments yet they are unmistakenly Radaranges, right down to the three mechanical pushbuttons.

Shortly after the chrome door models went out of production, a new line was introduced reviving the RR nomenclature. Perhaps the RRLs were already looking dated with their boxy, woodgrain aesthetics. The RR-700 and RR-900 shown below from 1985 were very popular and once again, introduced chrome details with a modern twist. They are easily identified by their spring-loaded door handles. Being half a decade newer than the RRL's, they take advantage of a lot of cost-reductions. These machines are the last to use the traditional RR glass trays.

Examples of RRL and "new RR" machines....
RRL-9TA  This is the RRL series equivalent of the RR-9TA. It retains the solid steel and expert craftsmanship of the earlier models and also features the classic red LED look, but the door and controls are more in-line with late 70's early 80's styling. 73 lbs. net weight.

RRL-10A  This is the Touchmatic II version of the RRL line. Note the button background color that matches the RR-10A. The orange trim became more subdued on later RRL-10As. Build date of January 1980.

RRL-10C (not pictured) Has a revised vent appearance but is otherwise identical. A stopgap until the major design overhaul shown below.

Did you know? Cooking time and Cookmatic power levels can be changed on the fly on the Touchmatic machines. Simply enter the new time and function (Cook, Defrost, etc.) while the oven is cooking and press Start. The RR won't miss a beat!

RR-700 A throwback to analog appearance with a digital flair. One knob is a rotary encoder for setting cooking time & temp, the other is a variable pot to vary the Cookmatic level (which shows as progressive bars along the bottom of the display). When turned fully CCW, setting the Cook time and pressing Start puts the machine in Timer mode. This model debuted for 1982.

Hold in Start for 2 seconds to enter Clock Setting mode. Dial in time of day. Press Start again.

RR-700 Built-In Click HERE to see the built-in version (Sep 1985). A factory plate blocks the front exhaust vent and notice how the door hinges on the side. Yet it's still marked RR-700.

RR-900 Like the 700 above, you still have mechanical switches for Start/Stop/Light, but a dimmer vacuum fluorescent display and smaller "pushbuttons" that resemble the glass touchplates of old, but are actually dome switches. Functionally, this is a basic Touchmatic with adjustable cooking power, much like the old RR-9T. Sep 1982.

OK, the wheels are starting to come off. It's the early 80's and the RRL series needs a facelift. The woodgrain gets pulled, the orange accents are out, and the control panel gets a contemporary makeover. Voila! A fresh look.

The RRL-820 below from 1985 is a good example of this. Meanwhile, as the thought probably went, some cost could probably be taken out of the new RR series, and a unified look given to the control panel to match the new RRLs.

There are lots of variations on both of these series, but as my focus is primarily on the originals, I'll only document a couple of these newer machines below.

Small, cheap microwaves are starting to flood the market and the overly-built Radarange isn't the only game in town. A new, smaller model having almost nothing in common with the old machines is introduced. These have no interior trays, lots of thin metal and cheap plastic, and get the 'two-rows of buttons' look to the keypad to match the larger machines.

Family-Wide Facelift

RRL-820 An example of the RRL-update. They don't get much simpler than this. One program. No temp probe. You get a digital keypad and a cookmatic level. Note the revised control panel and lack of mechanical Start/Stop/Light switches. Manufactured Sep 1985.

Additionally, RR-910 and RR-1010 machines were released the same year, each with additional features over the 820 but keeping with the new family appearance.

RR-1050 An example of the 'new-RR'-update. And, like the RRL-820 above, the revised double-row family look control panel for the 'new RR' series. Again, no mechanical Start/Stop/Light switches and plastic controls. At least the 1050-level means you get 'Accutemp' and 'Accuthaw'. Aug 1985.
End of the Line... RS415T And, for continuity, the smaller, less expensive model showing the double-row keypad. And yes, that's the model number.

Now that's different!
Replacement Panel - Based on build-date, this machine should have a red-LED 9T panel with glass touchplate, but instead has this cheaper plastic panel and vac fluorescent display very similar to the 8T above. My assumption is panels such as this were offered for service when originals became no longer available.
See Q&A Section

Built-In Kit - In the collection is both the UL approved galvanized wall sleeve and trimwork shown at left that allows any countertop model Radarange to be built-in to the wall and still allow proper air circulation.

The R0s - Starting approximately 1979, Amana made a line of built-in-specific models with the R0 prefix. All have integral galvanized sheetmetal housings to allow air circulation and have side-swinging doors hinged on the left. Air vents are along the top and bottom front of the unit. Shipping weight was 115 lbs. The R0-10A was the Touchmatic II version and the R0-24-8 was similar to the units used in the Amana 3+1 cooking centers, having a backlit analog timer, Cookmatic control and temp hold dial, all behind black glass.

See Q&A Section
Euro-Radaranges - While very rare, there were Radaranges made for the 220v 50Hz Euro market. This example is marked as an RR-5B though it appears to be similar to a US-made RR-9. Notice the ISO-centric control markings.

The RMC-Series - This RMC-30 was part of the Radarange Plus Series marketed in the late 70's/early 80's. It adds the functionality of a Touchmatic II microwave with the browning capability of a convection oven. The size is imposing, dwarfing a traditional Radarange, and it's got the weight to match. A 'Cookmatic' version with mechanical timer was also offered. Note the metal backing rack. The analog timer version was the RMC-20.

RCM-9 A Frigidaire microwave! Actually, it's an Amana Radarange in disguise, pretty much an RR-9 equivalent with the same heavy-duty power supply and Raytheon magnetron. Interestingly, it has a woodgrain cabinet. The rear dataplate appears similar in size and shape to the Amana yet lists Frigidaire as the manufacturer. The keypad font matches Frigidaire's line of Touch n' Cook digitally controlled appliances. Click HERE for the unique interior door text. Manufactured July '77.
Pics to Come...
Instruction Page
The R-Series - Occasionally, I get contacted about an R-1 or R-2 or R-x machine. Apparently, Amana sold a lesser known series of Radaranges in parallel with the RR series starting in the very late 60's. Having a very distinctive commercial look, it's unclear if this was the initial intent.

Accessories

A number of Corning pieces were made for the Amana Radarange line, many incorporating internal RF-absorbing plates that convert microwave energy into thermally conducted energy that provides traditional searing, baking and crisping. Most include instructions to "pre-heat" the cookware in the microwave for several minutes before use.

This is the MW-10 covered Browning Skillet which measures approximately 10x10x2.

Corning also made similar dishes for Litton with a very 70's yellow/orange sunburst pattern though they're hard to find. Even tougher is the design for GE microwaves featuring a random 'sawtooth' electronic waveform pattern.

The 12" Pizza Crisper works on the same principal. While the cheese melts and the toppings cook, the crisper plate crisps the crust from below.- MW-12A.
The MCT-1 Probe is for Candymaking with compatible Radaranges and was sold separately, though sometimes included with other accessories to 'make the sale' of a new Radarange. The temp range is significantly higher than the brown corded probe which tops out at 190F.

My hunch is that most Country Cookers saw primary duty outside of the microwave ovens they were designed for. Measuring 10-3/4 tall and approximately 4qt in volume, these covered stoneware vessels are also oven-compatible. They were made by both Western Stoneware and Cardinal Stoneware.

MWK-30 Cookit Grill. This 3 piece set is designed for cooking bacon, making burgers and grilling other meats. It consists of the MR-1 rack, MW-2 base and the Pyrex MW-2C lid.

This is the small, round browning skillet offered by Amana. No model number imprinted on the handle. Approximately 6-3/4" diameter by 2" deep.

MWP-1 - Everyone's favorite cardboard flavored popcorn! The base concentrates RF energy for popping regular popcorn kernels without oil or butter; straight from the era of air-poppers. Since corn kernels have very little moisture content, popping any kind of popcorn in the microwave can be very hard on the magnetron.

MCM-4A Coffee Maker - There was also a straight MCM-4. This one is new in the box and I'm not sure how inclined I am to indulge in the promise of microwave coffee.
Made of polysulfone, an analog thermometer made by Taylor Instruments was also offered. Registering 0-220F on a 1-1/2" dial it is completely microwave safe and "fast acting".

The introduction of a new way of cooking meant that all the traditional recipes in the card file were no longer applicable at mealtime. While not accessories, per se, several different cookbooks were released by Amana with tips, suggestions and recipes for getting the most out of  your Radarange. These were often included as part of the sales package with your new machine. The book at left is copyright 1968 (circa the RR2 release) and includes inserts for operation of the 3H (1971). It has a three-ring-binder format.

In 1972, Amana released the "New Microwave Oven Cooking Guide" to coincide with the RR-4 release. This is also a 3-ring-binder format though more professionally done. These two make up the early Amana cookbooks worth picking up. Publications after this were more traditional, though probably more useful as actual cookbooks.

And what better place to put those new microwave recipes than in the Radarange Recipe File.

Machines for Sale
Every now and then I come across a duplicate machine that deserves a home. When that happens, and time willing, I’ll offer it in this section. These machines are cleaned, repaired, any worn parts replaced, the magnetron is performance checked and the whole machine gets an RF-leak test. Yeah, shipping is a killer.
None at this time.


Last Updated Aug, 2014.