Solwave 180MWASHD12 User manual

1
Commercial Microwave
SERVICE MANUAL
Models
16400050
180MWASHD12
180MWASHD18
180MWASHD21

2
Table of Contents
Safety Instructions................................................................................................................. 3
Specifications ...................................................................................................................... 4
Installation ........................................................................................................................... 4
Owner’s Information........................................................................................................... 5-6
Components Location...................................................................................................... 7-11
Airflow ................................................................................................................................ 12
Component Testing ....................................................................................................... 13-14
Service Mode……………………………………………………………………………………….15
Performance Testing………………………………………………………………………………16
Wiring and Schematic Diagrams.................................................................................... 17-18

3
Safety Information
To avoid risk of personal injury or property damage, observe the following safety
instructions:
General Use:
1. Do not use regular cooking thermometers in oven. Most cooking thermometers contain mercury and may
cause an electrical arc, malfunction, or damage to oven.
2. Never use paper, plastic, or other combustible materials that are not intended for cooking.
3. When cooking with paper, plastic, or other combustible materials, follow manufacturer’s recommendations
on product use.
4. Do not use paper towels which contain nylon or other synthetic fibers. Heated synthetics could melt and
cause paper to ignite.
5. To avoid surface deterioration, keep the oven in a clean condition. Infrequent cleaning could adversely
affect the life of the appliance and possible result in a hazardous situation.
6. Clean oven regularly and remove any food deposits.
Heating Foods and Liquids:
7. Liquids such as water, coffee, or tea are able to be overheated beyond the boiling point without appearing to
be boiling due to surface tension of the liquid. Visible bubbling or boiling when the container is removed
from the microwave oven is not always present. THIS COULD RESULT IN VERY HOT LIQUIDS
SUDDENLY BOILING OVER WHEN A SPOON OR OTHER UTENSIL IS INSERTED INTO THE LIQUID.
To reduce the risk of injury to persons:
• Do not overheat the liquid.
• Stir the liquid both before and halfway through heating it.
• Do not use straight-sided containers with narrow necks.
• After heating, allow the container to stand in the microwave for a short time before removing it.
b. Use extreme care when inserting a spoon or other utensil into the container.
8. Do not deep fat fry in oven. Fat could overheat and be hazardous to handle.
9. Do not cook or reheat eggs in shell or with an unbroken yolk using microwave energy. Pressure may build
up and erupt. Pierce yolk with fork or knife before cooking.
10. Pierce skin of potatoes, tomatoes, and similar foods before cooking with microwave energy. When skin is
pierced, steam escapes evenly.
11. Do not heat sealed containers or plastic bags in oven. Food or liquid could expand quickly and cause
container or bag to break. Pierce or open container or bag before heating
12. Do not heat baby bottles in oven.
13. Baby food jars shall be open when heated and contents stirred or shaken before consumption, in order
to avoid burns.
14. Never use oven to heat alcohol or food containing alcohol as it can more easily catch fire if
overheated.
Additional Microwave Oven Safety Instructions:
15. Do not operate equipment without load or food in oven cavity.
16. Use only popcorn in packages designed and labeled for microwave use. Popping time varies
depending on oven wattage. Do not continue to heat after popping has stopped. Popcorn will scorch or
burn. Do not leave oven unattended.
17. Do not use metal utensils in oven.
CAUTION

4
Specifications
CAUTION
!
All safety information must be followed
!
WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitor before
servicing, unless testing requires power.
Power Source
Voltage AC
120
208/240
208/240
Amperage (single unit)
20
20
20
Frequency
60HZ
60HZ
60HZ
Single phase, 3 wire grounded
Yes
Yes
Yes
Plug
NEMA 5-20
NEMA 6-20
NEMA 6-20
Power Output
Nominal microwave energy
(IEC705)
1200W
1800W
2100W
Number of Magnetrons
2
2
2
Operating frequency
2450 MHz
2450 MHz
2450 MHz
Power Consumption
Cook condition microwave
2000W 16.8A
3000W 14.4A
3000W 15.4A
Door Style
Window
Window
Window
Dimensions
Cabinet
Width
419 cm (16.5 in)
419 cm (16.5 in)
419 cm (16.5 in)
Height
343 cm (13.5 in)
343 cm (13.5 in)
343 cm (13.5 in)
Depth (includes door handle)
549 cm (21 5/8 in)
549 cm (21 5/8 in)
578 cm (22 5/8 in)*
Oven Interior
Width
330 cm (13 in)
330 cm (13 in)
330 cm (13 in)
Height
171 cm (6 3/4 in)
171 cm (6 3/4 in)
171 cm (6 3/4 in)
Depth
305 cm (12 in)
305 cm (12 in)
305 cm (12 in)
Weight
Crated
34 kg (74 lbs)
34 kg (74 lbs)
34 kg (74 lbs)
Uncrated
31 kg (68 lbs)
31 kg (68 lbs)
31 kg (68 lbs)
Installation
Unpacking Oven
•Inspect oven for damage such as dents in door or dents inside oven cavity.
•Report any dents or breakage to source of purchase immediately. Do not attempt to use oven if damaged.
•Remove all materials from oven interior.
•If oven has been stored in extremely cold area, wait a few hours before connecting power.
Radio Interference
Microwave operation may cause interference to radio, television, or similar. Reduce or eliminate interference by doing the following:
Clean door and sealing surfaces of oven according to instructions in “Care and Cleaning” section.
Place radio, television, wireless routers, etc. as far away as possible from oven.
Use a properly installed antenna on radio, television, etc. to obtain a stronger signal reception.
Models 180MWASHD12 180MWASHD18 180MWASHD21
*Note: 180MWASHD21 has additional air duct at back

5
Owner’s Information
(C)
(i) (ii) ( iii) (iv) (v) (vi)
OVEN CLEARANCES
A. Allow at least 2” (5.1 cm) of clearance
around top of oven. Proper air
flow around oven cools electrical
components. With restricted air flow,
oven may not operate properly and life
of electrical parts is reduced.
B. SWAHD12 & SWAHD18 models:
There is not an installation clearance
requirement for the back of the oven.
SWAHD21: Allow at least 1” (2.54
cm) of clearance around back of
oven.
C. Allow at least 1” (2.54 cm) of clearance
CONTROL PANEL FEATURES
(A) USB Port
(B) Display
(C) Number Keypads
(D) Start/ OK Keypad
(E) Stop/ Reset Keypad
(F) Secondary Function Keypads
To activate, press and hold corresponding
number keypad.
(i) Manual Time Entry Mode (keypad “1”)
(ii) Power Level (keypad “2”)
(iii) Programming Mode (keypad “3”)
(iv) User Options (number keypad “4”)
(v) X2 - Double Quantity Cooking (keypad “5”)
(vi) Menu A/B (keypad “6”)
around sides of oven.
D. Install oven so oven bottom is at least
3 feet (91.5 cm) above floor.
Preset Program Keypads
To cook food using preprogrammed cooking
sequences:
1. Open oven door, place food in oven,
and close oven door.
2. Press desired number keypad(s).
3. Oven operates and time counts down.
4. At the end of the cooking cycle, the
oven beeps. Carefully remove food
from oven.
X2 - DOUBLE QUANTITY COOKING
1. Press and hold number keypad “5”/ X2
to toggle double quantity feature ON.
“X2” appears at top center of screen
when enabled.
2. Press desired number keypad(s).
Display counts down cooking time for
two quantities.
MENU A/B (select models)
Press and hold number keypad “6” to toggle
between A and B menus.
Manual Time Entry Mode
Time entry mode allows the user to manually enter cook time and power level, without
changing the preset program keypads.
1. Open oven door, place food in oven, and close door.
2. Press and hold number keypad “1”/ TIME ENTRY.
3. Press number keypads to enter desired cook time.
4. Press and hold number keypad “2”/ POWER LEVEL to change power level.
• Press number keypads to enter % microwave power (“1”=10%, “2”=20%,etc.)
For 100% power level, press and hold number keypad “2”/ POWER LEVEL.
5. Press START/OK keypad to begin cooking.
6. At the end of the cooking cycle, the oven beeps. Carefully remove food from oven.
Programming Mode
1. Press and hold number keypad “3”/ PROGRAM.
2. Press number keypad(s) to open the desired program location.
3. To edit name: Press number keypad “0”. Press number keypads to enter recipe name.
Press START/OK keypad.
4. To edit cook time for Stage One: Press number keypad “1”. Press number keypads to
enter cook time. Press START/OK keypad.
5. To edit power level for Stage One: Press number keypad “5”. Press number keypads to
enter % microwave power (“1”=10%, “2”=20%,etc.). For 100% power level, press and hold
number keypad “2”/ POWER LEVEL.
6. If stage cooking is desired, repeat steps 4-5 for each additional stage, substituting
corresponding number keypads for each stage.
7. To save and exit programming mode: Press START/OK keypad.
(A)
(B)
(F)
(D) (E)
A
C
B
D

6
Access and Modify User Options
There are several options you can change to customize the operation of the
oven for your business. Options are shown below. The factory setting is
shown in bold type.
1. Press and hold keypad number “4”/ USER OPTIONS.
If prompted, enter the PIN Code and press START/OK keypad
2. Press the START/OK keypad to scroll through pages of user options
3. To access an individual user option, press the corresponding number keypad
• To change the setting, press corresponding number keypad
• To return to User Options Menu, press START or STOP/RESET
4. Press STOP/RESET keypad to exit User Options Menu
STANDARD DEFAULT PER MODEL (FACTORY SETTINGS IN BOLD)
Factory setting may vary by model
SETTING DISPLAYED OPTIONS DESCRIPTION
End of Cycle Beep 3 Seconds
Continuous
Burst
3 second continuous beep
Continuous beep until door is opened
5 beep bursts until door is open
Speaker Volume
Low
Medium
High
Sets volume to low
Sets volume to medium
Sets volume to high
Key Beep
On
Off
Allows beep when keypad is pressed
Prevents beep when keypad is pressed
Reset on Door Open End Cook Cycle
Pause Cook Cycle
Cancels heating time count down after door is opened during cycle.
Allows oven to resume heating time countdown after door is opened during cycle
Digit Entry Single Digit
Double Digit
Folders
Allows 10 (0-9) preprogrammed items
Allows 100 (00-99) preprogrammed items
Allows 10 folders (0-9), each with 10 preprogrammed items
Manual Programming
On
Off
Allows use of manual time entry and preprogrammed keypads
Allows use of preprogrammed keypads only
Time Entry
On
Off
Manual time entry/cooking allowed
Manual time entry/cooking not allowed
Maximum Cook Time 10 minutes
60 minutes
Allows 10 minutes of heating time
Allows 60 minutes of heating time
Keypad Enable Window 15 seconds
30 seconds
1 minute
2
minutes
15 seconds after oven door is opened, keyboard disabled
30 seconds after oven door is opened, keyboard disabled
1 minute after oven door is opened, keyboard disabled
2 minutes after oven door is opened, keyboard disabled
On-the-Fly On
Off
Allows pushing additional keypads to add or change time in the middle of a cook cycle
Disables pushing any additional keypads during a cook cycle
Quantity Prompt* On
Off
Prompts the user for portion quantity multiplier (1-9) upon selecting a preset program
Allows user to cook individual portions and/or use X2 quantity multiplier feature
Default to Menu A or B* Menu A
Menu B
Menu A displayed by default
Menu B displayed by default
PIN Code
Off
On
Set PIN Code
PIN Code not required to access User Options
PIN Code required to access User Options
PIN Code required. Create new 4 digit PIN Code
Language Bengali, Chinese (Mandarin), Danish, Dutch, English, Filipino, French, German, Greek, Hindi, Italian, Japanese, Korean, Laotian,
Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Thai, Ukrainian, Vietnamese
Load File N/A Detects USB flash drive and imports .xml format menu file

7
Components Location
BLOWER, CAPACITOR, DIODE, INTERLOCK

8
DOOR

9
CONTROL BOARD, MAGNETRONS, DUCTS, FUSE

10
TRAY, CAVITY, ANTENNAS

11
WRAPPER, ACCESS PANEL, LAMP

12
Air Flow
1. AIR ENTERS THROUGH FRONT FILTER
3. AIR PUSHED THROUGH MAGNETRONS
2. AIR IS DRAWN INTO BLOWER
4. AIR PUSHED CAVITY AND EXITS THROUG CAVITY DUCTS

13
Component Testing
Illustration
Component
Testing
Results
Thermal Cutouts
Disconnect all wires from TCO.
Measure resistance across
terminals.
Cavity Thermal Fuse
...........................
Magnetron TCO ................................
..
Open at 104° C (219° F).
Open at 138° C (280° F) and
Closed at 82° C (180° F).
Diodes
Discharge Capacitors
Remove diode lead from capacitor
and connect ohmmeter.
Reverse leads for second test.
Infinite resistance should be
measured in one direction and
50KΩ or more in the opposite
direction.
NOTE: Analog meter must
contain a battery of 6 volts
minimum.
MT2
MT1 GA TE
Triac
Disconnect wires to triac.
Measure resistance from:
MT1 to MT2 ................................
........
MT1 to Gate................................
........
MT2 to Gate ................................
........
All terminals to ground
........................
Caution - Do not operate oven
with wire to terminal MT2
removed.
Infinite.
Approximately 60 Ω or more.
Infinite
Infinite.
Capacitor
Discharge Capacitors
Remove wires from capacitor
terminals and connect ohmmeter,
set on highest resistance scale to
terminals.
Also check between each terminal
and capacitor case.
Between Terminals: Meter
should momentarily deflect
towards zero then return to over
5 MΩ. If no deflection occurs, or if
continuous deflection occurs,
replace capacitor.
Terminal to Case: Infinite
resistance.
ALWAYS USE CORRECT SIZE
Snubber Assembly
Disconnect wires to snubber.
Measure resistance across terminals
..
Infinite.
Magnetron
Discharge Capacitors
Remove wires from magnetron and
connect ohmmeter to terminals. Also
check between each terminal and
ground.
Between Terminals: Less than 1
Ω.
Each terminal to ground
measures Infinite resistance.
NOTE: This test is not
conclusive. If oven does not heat
and all other components test
good replace the magnetron and
retest.

14
Blower Motor
Remove all wires from motor.
Measure resistance COM to 208
Measure resistance COM to 230
Measure resistance 208 to 230
Approx 23Ω
Approx 26Ω
Approx 3Ω
Stirrer Motor- 25RPM
Remove all wires from motor.
Measure coil resistance
Approximately 25k Ω.
COM
Transformer
Discharge Capacitor
Remove all wires from terminals, and
measure resistance from:
230 to Common………………………
208 to Common………………………
Terminal 5 to 6………………………..
Terminal 7 to 8………………………
Terminal 4 to Ground ………………….
<1 Ω.
<1 Ω.
<1 Ω.
<1Ω
27Ω±10%
Interlock Switch
Assembly
Disconnect wires to switch.
With door open measure resistance
from:
Primary – Terminals………….
Monitor – Terminals………….
Secondary – Terminals………
With door closed measure
resistance from:
Primary – Terminals………….
Monitor – Terminals………….
Secondary – Terminals………
Open/Infinite Ω
Closed/Continuity
Open/Infinite Ω
Closed/Continuity
Open/Infinite Ω
Closed/Continuity
Touch Panel Assembly
Disconnected from Main Board
Pad Traces
1 1 to 8 to 10 0-150Ω
2 1 to 7 to 10 0-150Ω
3 1 to 6 to 10 0-150Ω
4 1 to 5 to 10 0-150Ω
5 1 to 4 to 10 0-150Ω
6 1 to 3 to 10 0-150Ω
7 1 to 8 to 9 0-150Ω
8 1 to 7 to 9 0-150Ω
9 1 to 6 to 9 0-150Ω
0 1 to 5 to 9 0-150Ω
Start 1 to 4 to 9 0-150Ω
Stop 1 to 4 to 8 0-150Ω

15
Service Mode
TO ACCESS THE SERVICE MODE:
•PRESS AND HOLD THE “7” PAD UNTIL THE PIN PROMPT IS DISPLAYED
•AT THE PIN PROMPT, ENTER 1,3,5,7 then 9 THEN SELECT FROM THE
FOLLOWING:
o1 – USAGE
This shows Door Cycles, Tube Cycles, and Tube Hours.
o2 - ERROR HISTORY
This shows any Error Codes that have occurred
o3 - PIN CODE
This reveals the 4 digit PIN code required for programming (if enabled)
o4 - VOLTAGE SWITCHING (not available on 120vac units)
Allows selection of Forced 208, Sensing (Auto Sense), or Forced 230
o5 - EXPORT TO USB
This option requires a USB be inserted. Files that contain USAGE,
OPTIONS & ENGINEERING SETTINGS, MENU PROGRAMMING, and
ERROR CODES will be downloaded.
NOTE: Pressing the grey “stop” pad will navigate backwards.

16
Performance Testing
All SOLWAVE microwave oven power outputs are rated using the IEC705 standards. Using the
IEC705 test method requires precision measurements and equipment that is not practical to be
performed in the field. Using the test shown below will indicate if the oven performance is
satisfactory.
Test equipment required:
•1000 ml test container and thermometer
•Digital watch / watch with a second hand for use on ovens with electromechanical
timers.
Important Notes:
•Low line voltage will cause low temperature rise / power output.
•Ovens must be on a dedicated circuit, properly grounded, and polarized. Other equipment on the
same circuit may cause a low temperature rise / power output.
•This test and results are not a true IEC705 test procedure and are only intended to provide
servicers with an easy means of determining if the microwave oven cooking output is correct.
Procedure
1. Fill the test container to the 1000 ml line with cool tap water.
NOTE: Water temperature should be approximately 65° F / 16° C.
2. Using the thermometer, stir water for five to ten seconds; measure, and record the temperature (T1).
3. Place test container of water in the center of oven cavity and close door.
4. Heat the water for a 33-second full power cycle.
NOTE: Use a digital watch or a watch with a second hand for ovens with electromechanical
timers.
1. At end of the cycle, remove test container. Using the thermometer, stir water for five to ten seconds
and record temperature (T2).
2. Subtract the starting water temperature (T1), from the ending water temperature (T2) to obtain the
temperature rise (∆T).
3. If the temperature rise (∆T) meets or exceeds the minimum, the test is complete. If the temperature
rise (∆T) fails to meet the minimum temperature rise, test the line voltage to verify it is correct. Then
repeat steps 1-6 making sure to change the water. If the temperature rise (∆T) fails to meet the
minimum temperature rise again the oven will require service.
Minimum Temperature Rise at Thirty-Three (33) Seconds Run Time
∆T Cooking ∆T Cooking ∆T Cooking ∆T Cooking
(°F) Power Output (°F) Power Output (°C) Power Output (°C) Power Output
10 ................. 1000 20 ................. 2000 5 ............... 1000 11............ 2000
11 ................. 1100 21 ................. 2100 5.5............. 1100 11.5 ......... 2100
12 ................. 1200 22 ................. 2200 6.5............. 1200 12 ............ 2200
14 ................. 1400 24 ................. 2400 7.5............. 1400 13 ............ 2400
17 ................. 1700 25 ................. 2500 9.5............. 1700 13.5 ......... 2500
18 ................. 1800 27 ................. 2700 10.............. 1800 15 ............ 2700
19 ................. 1900 30 ................. 3000 10.5........... 1900 16.5 ......... 3000

17
Wiring Diagrams & Schematics
180MWASHD12

18
180MWASHD18 & 180MWASHD21