Commercial Microwave—Technical Information
230V, 50 Hz Models
RMS510TS2 P2006703M RMS510DS2 P2006704M
RMS510TSUA P2006707M RMS510DSUA P2006708M
RMS510TSCA P2006709M RMS510TSIA P2006710M
RMS510TSAA P2006711M
Due to possibility of personal injury or property damage, always contact an authorized technician for servicing or
repair of this unit.
Refer to Owner’s Manual for installation and operating instructions
July 2019 1
©2019 ACP, Inc. 16500066
Nominal microwave energy (IEC705)
Minimum temperature rise (∆T)
To avoid the risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitor
before servicing, unless testing requires power.
July 2019
©2019 ACP, Inc.
Component Testing Procedures
Disconnect all wires from TCO.
Measure resistance across terminals.
Cavity TCO………… ......................................
Magnetron TCO ..............................................
Open at 203° F (95° C) Closes at 185°
F (85° C)
Open at 293° F (145° C) Closes at 275°
F (135° C)
Discharge Capacitor
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: Test meter must contain a
battery of 6 volts minimum.
Discharge Capacitor
Remove wires from capacitor terminals and
connect ohmmeter, set on highest
resistance scale to terminals.
Also check between each terminal and
capacitor case.
Check 1.20uf value for + or – 3%
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.
Discharge Capacitor
Remove wires from magnetron and
connect ohmmeter to terminals. Also check
between each terminal and ground.
2M248(J)A –B2
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.
Remove all wires from terminals.
Measure resistance from:
terminal to terminal......................................
230vac 50hz 29.1rpm
Bidirectional
Approximately 4 KΩ.
Remove all wires from motor.
Measure resistance from terminal to
terminal… .......................................................
Approximately 50 Ω.
230vac 50hz 2800rpm
Fuse block / Filter
assembly
20A Fuse
Power In terminals .......................................
Power Out terminals ....................................
Continuity Test
230 VAC
230 VAC
Rated 20A 250vac
To avoid risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitor
before servicing, unless testing requires power.
July 2019
©2019 ACP, Inc.
Component Testing Procedures
Transformer
HV Fuse
(Terminal 4)
Discharge Capacitors
Remove all wires from terminals.
Measure resistance from:
Terminal 1 to Terminal 2..................................
Wire 5 to Wire 6 ...............................................
Terminal 4 to Ground screw on transformer...
Terminal 4 to any other terminal ......................
Resistance
2.0 Ω.
Less than 1 Ω.
127Ω.
Infinite resistance
Continuity
Rated 700ma 5KV
Interlock switch
assembly
Secondary
Interlock
Switch
Monitor
Interlock
Switch
With door open measure resistance from:
Terminal C to NO Secondary......................
Terminal C to NC Monitor ...........................
Terminal C to NO Primary / Logic...............
With door closed measure resistance from:
Terminal C to NO Secondary......................
Terminal C to NC Monitor ...........................
Terminal C to NO Primary / Logic...............
Infinite
Continuity
Infinite
Continuity
Infinite
Continuity
Disconnect wires to switch.
To avoid risk of electrical shock, personal injury or death, disconnect power to oven and discharge capacitor
before servicing, unless testing requires power.
To Check Magnetron Hours or Door Cycles:
1) Open door and Press/Hold Pad #3 for 5 seconds or until “SErV” is Displayed
2) Press Pad #1 to display Magnetron Hours in 100’s.
3) Press Pad #3 to display Door Cycles in 100’s