Monogram ZEM115SFSS Quick Start Manual

MICROWAVE OVEN HOODS
IMPORTANT SAFETY NOTICE
E. ANY DEFECTIVE OR MISADJUSTED
COMPONENTS IN THE INTERLOCK MONITOR,
THIS INFORMATION IS INTENDED FOR USE BY DOOR SEAL AND MICROWAVE GENERATION AND
INDIVIDUALS POSSESSING ADEQUATE BACKGROUNDS TRANSMISSION SYSTEMS SHALL BE REPAIRED,
REPLACED OR ADJUSTED BY PROCEDURE
OF ELECTRICAL, ELECTRONIC AND MECHANICAL
EXPERIENCE. ANY ATTEMPT TO REPAIR A MAJOR DESCRIBED IN THIS MANUAL BEFORE THE OVEN
APPLIANCE MAY RESULT IN PERSONAL INJURY AND IS RELEASED TO THE OWNER.
PROPERTY DAMAGE. THE MANUFACTURER OR SELLER
F. A MICROWAVE LEAKAGE CHECK TO VERIFY
CANNOT BE RESPONSIBLE FOR THE INTERPRETATION
COMPLIANCE WITH THE FEDERAL PERFORMANCE
OF THIS INFORMATION, NOR CAN IT ASSUME ANY
STANDARD SHOULD BE PERFORMED ON EACH
LIABILITY IN CONNECTION WITH ITS USE.
OVEN PRIOR TO RELEASE TO THE OWNER.
WARNING
GROUNDING SPECIFICATIONS
Leakage Current 0.5 mA. (Max.)
Ground Path Resistance 0.1 Ω (Max.)
RISK OF ELECTRIC SHOCK. CAN CAUSE
INJURY OR DEATH. DISCONNECT POWER
INSTALLATION REQUIREMENTS
BEFORE SERVICING IMPORTANT-RECONNECT
ELECTRICAL
ALL GROUNDING DEVICES
Power Source
ALL PARTS OF THIS APPLIANCE CAPABLE OF
Line Current
CONDUCTING ELECTRICAL CURRENT ARE GROUNDED.
Over Current Protection
IF GROUNDING WIRES, SCREWS, STRAPS, CLIPS, * Requires 120 volt, 15 Amp. parallel, grounded separate
NUTS OR WASHERS USED TO COMPLETE A PATH TO
circuit.
GROUND ARE REMOVED FOR SERVICE, THEY MUST
Working Voltage
BE RETURNED TO THEIR ORIGINAL POSITION AND
PROPERLY FASTENED.
MICROWAVE LEAKAGE TEST
1. Place 275 ml. water in 600 ml. beaker (WB64 x 5010).
PRECAUTIONS TO BE
2. Place beaker in center of oven glass.
OBSERVED BEFORE AND
3. Set meter to 2450 MHz scale.
4. Turn "on" for 5 minute test.
DURING SERVICING TO AVOID
5. Hold probe perpendicular to surface being tested and scan
surfaces at rate of one inch/sec.
POSSIBLE EXPOSURE TO
Test the following areas:
• Entire perimeter of door and control panel
EXCESSIVE MICROWAVE
• Viewing surface of door window
ENERGY.
6. Maximum leakage 4 mw/cm
NOTE: Maximum allowable leakage is 5 mw/cm
A. DO NOT OPERATE OR ALLOW THE OVEN TO BE
OPERATED WITH THE DOOR OPEN. 4 mw/cm
accuracy.
B. IF THE OVEN OPERATES WITH THE DOOR OPEN,
Inform the manufacturer of any oven found to have emission
INSTRUCT THE USER NOT TO OPERATE THE
in excess of 5 mw/cm
OVEN AND CONTACT THE MANUFACTURER
compliance at no cost to owner and try to determine cause.
IMMEDIATELY.
Instruct owner not to use oven until it has been brought into
compliance.
C. MAKE THE FOLLOWING SAFETY CHECKS ON ALL
OVENS TO BE SERVICED BEFORE ACTIVATING THE
HIGH VOLTAGE CAPACITOR
MAGNETRON OR OTHER MICROWAVE SOURCE,
The high voltage capacitor has an internal shunt resistor to
AND MAKE REPAIRS AS NECESSARY:
automatically discharge the capacitor when the oven turns "off".
1. INTERLOCK OPERATION
Under normal operation the capacitor should fully discharge
2. PROPER DOOR CLOSING
within 30 seconds.
3. SEAL AND SEALING SURFACES
(ARCING, WEAR AND OTHER DAMAGE)
DANGER
4. DAMAGE TO OR LOOSENING OF HINGES AND
LATCHES
5. EVIDENCE OF DROPPING OR ABUSE
HIGH VOLTAGE - 4,000V POTENTIAL. RISK OF
ELECTRIC SHOCK. CAN CAUSE INJURY OR DEATH.
D. BEFORE TURNING ON MICROWAVE POWER
Always be certain the capacitor is discharged before
FOR ANY TEST OR INSPECTION WITHIN THE
servicing. Mechanically discharge by placing an insulated
MICROWAVE GENERATING COMPARTMENTS,
handle screwdriver between the diode connection of the
CHECK THE MAGNETRON, WAVE GUIDE OR
capacitor and oven chassis ground.
TRANSMISSION LINE AND CAVITY FOR PROPER
NOTE:
ALIGNMENT, INTEGRITY AND CONNECTIONS.
Publish No.: 29-6086 MCC 08-16
• TECHNICAL DATA SHEET •
STANDARD TEST LOAD
Test load will be 1 liter (1000 ml) of water with an initial
temperature of 59°F~75°F in a 1000 ml beaker (WB64X73 or
Robonar 14882).
PERFORMANCE TEST
1. Record initial water temperature.
2. Run at high power for 2:03.
3. Record end water temperature.
The minimum difference between the initial and ending
temperature should be: 30°F @ 120 V
INTERLOCKS (DOOR Latch Switches)
Interlocks are designed as follows:
Primary - Top switch operated by top latch pawl connected to
line (L) leg.
120 VAC, 60 Hz.
10.5 Amps. (1200 Watts)
15 Amps
108-132 VAC.
HOW TO TEST INTERLOCKS
Disconnect power, open control panel, and discharge
2
capacitor.
2
Primary "A"
2 is used to allow for measurement and meter 1. Check Continuity of Com and N.O.:
• Door Closed - 0 Ω
• Door Open - ∞ Ω
2
. Make repairs to bring the unit into
MONITOR SWITCH
The monitor switch "B" is located between the top and bottom
interlocks. The monitor switch is operated indirectly by the
bottom latch pawl.
HOW TO TEST INTERLOCK SYSTEM
1. Disconnect power, open control panel, and discharge
capacitor.
2. Disconnect monitor switch leads, and test at terminals:
• Door Closed - ∞ Ω
• Door Open - 0 Ω
3. Reconnect switch wiring.
4. Test Circuit Operation:
A) Connect temporary jumper across relay contacts and
primary switch to simulate shorted switch contacts. Locate
convenient connections in circuit to be certain COM and
N.O. terminals are used.
B) Connect OHM meter (Low Scale) across the two line
terminals of appliance power cord.
Use screw head close to capacitor to insure ground
Continuity must show:
metal contact.
• Door Closed - Some Ω
• Door Open - 0 Ω
C) Remove 15 Amp. Fuse - Circuit must open (∞ Ohms).
If not, check wiring of monitor and interlock circuits.
5. Warning: After test, remove temporary jumpers and
reconnect monitor switch leads.
HIGH VOLTAGE - 4,000V POTENTIAL. RISK OF ELECTRIC SHOCK. CAN CAUSE PERSONAL INJURY OR
NOTE: Perform microwave leakage test when replacing or
DEATH: USE EXTREME CAUTION WHEN DIAGNOSING OVEN WITH OUTER CASE REMOVED AND POWER
adjusting interlock switches or latch board.
"ON". THE HIGH VOLTAGE SECTION OF THE POWER SUPPLY INCLUDING FILAMENT LEADS IS 4000 VOLTS
WARNING POTENTIAL WITH RESPECT TO GROUND.
Primary interlock, monitor switch, and RLY2(MICRO) must
be replaced when 15 A fuse is blown due to operation of
RISK OF ELECTRIC SHOCK. CAN CAUSE INJURY OR DEATH: POWER MUST BE DISCONNECTED BEFORE
monitor switch.
SERVICING THIS APPLIANCE AND RECONNECT ALL GROUNDING DEVICES.
HOW TO ADJUST INTERLOCKS
The switch housing is adjustable for door fit and switch
operation.
1. Disconnect power, open control panel, and discharge
capacitor.
2. Loosen switch housing mounting screw at enlarged hole in
vertical flange.
3. Adjust each switch housing for proper switch operation, and
door fit. Retighten screws.
4. IMPORTANT - CHECK FOR MICROWAVE LEAKAGE
AFTER ANY ADJUSTMENT.
CAUTION
When safety interlocks and monitor switches are repaired or
replaced, check microwave leakage and distance between
door and cavity of microwave as described below.
1. Use a piece of paper 0.02 inch thick, 1 inch wide and
4 inches long (a dollar bill folded in half twice lengthwise is
about this size).
2. Open the door and place the paper between the door and
front frame of the oven cavity.
3. Close the door to capture it between the door and the cavity
front frame.
4. Draw the paper from between the door and cavity (check at
bottom and sides also) if there is resistance to the removal
of the paper then the distance is correct.
5. Perform microwave leakage check, if leakage does not
exceed 4 mw/cm 2 it is performing properly.
DANGER
TO PREVENT ELECTRICAL SHOCK, USE EXTREME
CAUTION WHEN DIAGNOSING OVEN WITH OUTER
CASE REMOVED AND POWER "ON". THE HIGH
VOLTAGE SECTION OF THE POWER SUPPLY,
INCLUDING FILAMENT LEADS IS 4000 VOLTS
POTENTIAL WITH RESPECT TO GROUND.
DOOR ASSEMBLY
The door assembly is serviceable as an assembly or with
parts.
Part name
MICROWAVE LEAKAGE TEST
TCOs
A microwave leakage test must be performed any time a
door is removed, replaced, disassembled, or adjusted for Fan motor
any reason.
Turntable motor
2
THE MAXIMUM LEAKAGE IS 4 mw/cm .
HVT Primary winding
HVT Secondary winding
Humidity sensor
SCHEMATIC DIAGRAM
DANGER
WARNING
MODEL NUMBER
ZEM115SFSS PEM31DFCC
PEM31DFBB PEM31SFSS
PEM31DFWW PEM31RFSS
Resistance
≤30mΩ
105±5%Ω
Part name Spec. TCO trip point
3.1±10%KΩ
Cavity TCO 110°C 110°C±5°C
0.48±10%Ω
MAG TCO 160°C 160°C±5°C
138±10%Ω
2.0±10%KΩ
NOTE: CIRCUIT SHOWN WITH DOOR IN OPEN POSITION.
TCO reset point
0°C
95°C
Printed in China