Panasonic NC-TWS30 User manual

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Electric Thermo Pot
NC-TWS30
Service Manual
ORDER NO. PHAT070602C3
Specifications
Power Supply NC-TWS30
AC 240V 50 Hz
Power Consumption
(approx.)
Rated Vale 635 W
Boiling 635 W
Capacity (approx.) 3.0L
Dimensions (approx.) (W x D x H) 22.2 cm x 29.4 cm x 31.1 cm
Weight (approx.) 2.0 kg
Thermal regulation Thermostat
Rotating base 360° Rotatable with the power cord
Thermal fuse 157°C (2 thermal fuses)
Power cord Section area approx. 1 mm2 Length approx. 0.83 m
Hot water supply device specifications
Hot water supply method Air pump
Current volume adjustment range 170 ml/5sec
Operation method Push Supporting Plate
Pump-lock Push Stopper
Additional functions: Overheating protection, Air pump, Lock Knob (Air Pump type)
! WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.
© 2007 Panasonic Home Appliances (Thailand) Co., Ltd.
All rights reserved. Unauthorized copying and distribution
is a violation of law.
Product Color :
Pink
Destination :
Malaysia
Panasonic
®

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MICRO
COMPUTER
Water supply mark
Approx. 1000 ml.
240 V
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NC-TWS30
1. Problems Checking
Please follow check operating detail below, before
start to check the problems.
1.1. Thermo Pot Performance
Test Mode
Boiling and keep warm test
How to operate
1. Pour approx. 1000 ml water into the container.
2. Supply with 240 V Electirc power.
LED symbol for this instruction show as
below
● Lighted Blink
Instruction
1. Long boil/Reboil LED will be lighted and LED will
be blink and start to boil water.
2. After approx. 9-10 min. LED will be lighted and
change to keep warm state.
KEEP WARM BOIL
KEEP WARM BOIL
Contents
Page
1. Problems checking ..............................................................................................................................................2
2. Assembly and dismantle detail ............................................................................................................................5
3. Production No. position ......................................................................................................................................17
4. Body effciency check .........................................................................................................................................17
5. Parts location (NC-TWS30) ...............................................................................................................................18
6. Replcement parts list (NC-TWS30) ...................................................................................................................19
7. Packing ..............................................................................................................................................................20

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NC-TWS30
1.2. Dismantle Procedure for
Failure Diagnotics
Tapping screw
(M4 x 12)
Truss head screw
Bottom plate
Sleeve
Screw B
Waterproof
cover B
Body
Thermo pot may break down by static
electricity from clothes, human body,
workbenches, etc. when toutch or wonder to
toutch should to ground human body with
several MΩ.
SOMETHING REQUEST
Do not do maintennance and re-use if copper
pattern on PCB is broken.
1. Remove 2 Tapping screws and 1 Truss head
screw from Bottom plate.
2. Remove 1 screw and Sleeve from Body.
3. Remove white, orange Lead wire and Earth
wire from Peg frame.
4. Remove Body off.
5. Remove Water proof cover B.
1.3. Check points
Fig. 1
Insert the direction to Pin Base where Faston Terminal is inserted so
that the curl part may become direction of this figure. (2 positions)
# Tighten the screw securely and completely, allowing no
gap between the screw head and the counterpart.
# The additional-tightening torque shall be 70~120N • cm
(7.1~12.2kgf • cm).
Pan Head Tapping Screw
Deltite Screw
Faston Terminal shall be securely inserted to the end.
Earth Wire Assy
Wire Q
Funen Ban
Wire B
View B
Wire A
Funen Tube
Wire S
Wire L
Wire P
Wire J
Discharge gap
Discharge gap

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NC-TWS30
1.4. Failure Diagnostics Chart
1.4.1. SYMPTOM: No power (There is no indication.)
The items in the “Check” correspond to those shown in Check Point on P.3.
Check Diagnostic method Action
Thermal fuse comp. Is there connection across the blue lead wire on the peg
frame?
Replace the Thermal fuse comp.
Power cord ls there connection in the Power cord? (0Ω) Replace the Power cord.
When the above parts are normal Replace the Control unit A (bottom)
Replace the Control unit B (bottom)
1.4.2. SYMPTOM: Water is not boiled. (Water pour out.)
The items in the “Check” correspond to those shown in Check Point on P.3.
Check Diagnostic method Action
Boiling heater Is there connection across the boiling heater?
(approx. 70Ω) (between the brown and the red portions)
Replace the Container comp.
When the above parts are normal Replace the control unit A (bottom)

Tapping scraw
(M4 x 8)
Feed water pipe
Communicating
bushing
Water pipe
packing A
Water pipe
comp.
Container
comp.
Fig. 2
2.2. Feed water pipe
1. Remove 1 screw off.
2. Remove Bushing from Water pipe packing A and
Container comp..
3. Remove Feed water pipe from Communicating
bushing.
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NC-TWS30
2. Assembly and Dismantle
Detail
2.1. Bottom plate, Body
1. Remove 2 Tapping screws and 1 Truss screw from
Bottom plate.
2. Remove 1 screw and Sleeve from Body.
3. Remove black, white Lead Wire and Earth wire
from Peg frame.
4. Remove Body off.
Tapping screw
(M4 x 12)
Truss head screw
Bottom plate
Sleeve
Screw
Body
Fig. 1

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NC-TWS30
Fig. 3
Tapping screw (M4 x 8)
Thermal fuse
comp.
2.3. Thermal fuse comp. and
Thermostat
1. Remove 2 screws of Cover plate.
2. Remove white and black Lead wires of
Heater terminal.
3. Remove Cover plate from Container.
4. Remove Thermal fuse comp. from Cover plate.
5. Remove Hold spring A from Cover plate.
6. Rotate Thermostat 90° to remove it.
Operating point
- Careful Thermostat leans when assemble with Cover
plate.
- Do not forget to put Compound.
- Remove white and black Lead wires with wrench.
Container comp.
Thermostat
Hold spring A
Cover plate
Heater
terminal
Fig. 4
2.4. Case A Comp.
1. Remove Water pipe comp. and then remove Case A
comp..
2. Pull off Ball A from Case A comp..
Water pipe
comp.
Case A
comp.
Ball A
Lead wire assy E

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NC-TWS30
Tapping screw
(M3.5 x 12)
(2 pcs.)
Board holder B
Board holder B
Claw
LED holder
2.5. Lamp Ass’y Unit
1. Remove 2 screws off.
2. Remove Board holder B off (Pull Upside).
3. Remove LED Holder off.
4. Lean Board Holder B claw and pull Lamp ass’y unit
to remove.
Operating point
- When remove Lamp ass’y unit, please do in 1 set in
order to not forget Seal Packing F.
Fig. 6
KEEP WARM BOIL
A
2.6. How to Remove Decoration
panel (Display Part)
Open (A Point) with minus screwdriver of small pin.
Fig. 7

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NC-TWS30
Bottom ring
Peg frame
Tapping screw
(M4 x 12)
Minus
screwdriver
Fig. 8
2.7. Peg frame
1. Remove Body follow the instruction.
2. Remove Bottom ring upside with minus screwdriver
or etc.
3. Remove 1 screw off.
4. Use minus screwdriver to pry between 2 ribs of Peg
frame and Body, and then push out Peg frame with
thumb, then pull it off.
2.8. Gauge cover
Press clear part of Gauge Cover from inner body by
thumb and remove it.
Body
Push by thumb
Gauge cover
Fig. 9

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NC-TWS30
2.9. Lid comp., Inner lid
1. Remove 4 screws off.
2. Remove Inner lid off.
Fig. 10
Tapping screws M (4 x 12)
Inner lid
Packing A
Seal packing B
Lid comp.
Steam way A
2.10. Lid packing, Steam way A
1. Remove Steam way A.
2. Remove Lid packing.
Lid packing
Fig. 11

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NC-TWS30
2.11. Lid, Pump comp.
1. Remove 4 screws off.
2. Use minus screwdriver to pry between Lid and
Pump comp.
Fig. 12
Tapping screw.
M (4 x 12)
Pump comp.
Lid
2.12. Valve A, Spring B, Seal ring
1. Remove Valve A from Pump comp..
2. Remove Spring B off.
3. Remove Seal ring A from Valve A.
Fig. 13
Valve A
Seal ring
Spring B Leg
Leg
Push

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NC-TWS30
Fig. 14
2.13. Shaft
Push lower part of Pump comp. and push 4 legs of Shaft then pull out.
Shaft
Push Leg Leg
Shaft
Push
PushPush
2.14. Lock knob A, Lock spring A,
Lock spring B
1. Catch Lock spring A by wrench and pull out.
2. Follow the first section and remove Lock spring B.
3. Remove Lock knob B off.
Fig. 15
Lock spring A
Lock spring B
Lock spring B

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NC-TWS30
2.15. Supporting Plate
1. Adjust lock pin of Supporting plate at “Release”.
2. Remove Supporting plate off.
Operating point
When assemble, make sure that Caution label is on
the correct position.
Fig. 16
Supporting plate
Lid slot
Supporting plate
2.16. Stopper comp.
1. Adjust lock pin of Stopper comp. at “Release”.
2. Put minus screwdriver into Stopper comp. gap and use power to remove it.
Operating point
- After assemble, should to feel to touching of Supporting plate on Lock knob.
Stopper comp.
Fig. 17

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NC-TWS30
2.17. Lock lever A (Assemble -
Remove Knob)
Bottom up Thermo Pot and press Lock lever A deepest
then push it down and pull out.
Fig. 18
Lock lever A
w Remove this portion
as shown with arrow
2.18. Upper Frame
1. Remove all the components attached to the cover
plate, and remove the cover plate.
2. Remove the case A comp..
3. Remove the control unit B (operation).
4. Remove the upper frame from the container comp..
Fig. 19
Upper frame

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NC-TWS30
2.19. Thermal fuse comp. assembly
Assemble Thermal fuse comp. on Cover plate follow fig.20.
Operating point
- When assemble Thermal fuse comp. should not
make Thermal fuse moved.
- Should not make force (pull, bend, twist) on Thermal
fuse comp.
Fig. 20
Thermal fuse comp.
Cover plate
2.20. Thermostat Assembly
1. Set 2 ribs of Hold spring A on Cover plate to
assemble Thermostat ass’y.
2. Assemble Hold spring A on Cover plate.
Fig. 21
Thermostat
Hold spring A
Cover plate
Spring grooves
position

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NC-TWS30
2.21. How to Paste Decoration panel
Paste Decoration panel tightly.
Operating point
- Paste from A-point before, and follow the arrow
direction.
- Peel of scratch protection sheet from Decoration
panel surface.
KEEP WARM BOIL
Fig. 22
A
2.22. Shaft assembly
Set 4 legs of Shaft into groove of Fig.1 Pump comp.,
as picture below.
Fig. 23
Shaft
Shaft
Leg Leg
Slot

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NC-TWS30
2.23. Valve A, Seal ring, spring B assembly
1. Assemble Seal ring on Valve A, then assemble Spring B.
2. Set 4 legs of Valve A of Pump comp. as picture below.
Operating point
Flat side of Sealing should reach to base of Valve A.
Fig. 24
Valve A
Seal ring
Spring B
Leg
Hole
• Picture when remove Spring B. to make
more understand how to set Valve A.
2.24. How to Check Pump comp.
Use finger to block 1 position, and push tightly to prevent air leak from Lid. (If there is some rebound on Pump
comp., it means O.K.)
Operating point
- If do not set Packing lid well it may not withstand pushing reaction (Packing lid should not be open).
- Assemble Pump comp. to Lid after check air leak.
Fig. 25
Lid packing
Valve A
Push

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NC-TWS30
2.25. Recheck
After assembly please recheck water leak, insulation resistance and operation, those are usual or unusual.
INSULATION RESISTER : Measure by 500VDC insulation meter, the result should be more than 2 MΩ.
(Measure between 2 pins of plug and screw).
INSULATION RESISTANCE : Should stand at 1000VAC in 1min. (Measure Location is same as INSULATION
RESISTER).
CURRENT CHECK : Thermo pot performance test mode (P.2) and operation is usual or unusual.
3 . Production No. Position
Production No. is located at Bottom Plate.
Production Date
4. Body Efficiency Check
Caution
For this test, please careful hot water.
Amount of Pouring-Out Water Checking
1. Pour water into the Container and change to boiling state.
Waitting to keep warm mode.
2. Measure amount of pouring-out water after change to keep warm immediately.
3. Push on Supporting Plate to pump water for once and measure amount of poring-out water.
Allowance : Amount of water should be 160±30 ml.

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NC-TWS30
5. Parts location (NC-TWS30)
1
2
3
44
4
5
6
7
22
8
9
10
11
12
13
14
15
16
17
18
20
21
23
26
24
25
27
28
29
32
30
31
33 34 35
36
37
38
39
40
42
41
43
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NC-TWS30
6. Replacement parts list (NC-TWS30)
Important safety notice :
Componnts identified by mark have special characteristics important for safety.
When replacing any of these components, use only manufacturer’s specified part.
Parts List
Ref.No. Part No. Part Name NC-TWS30
1 APB41M586W1U Body A Ass’y 1
2 APB75-4801W1 Handle 1
3 APY20M586-W1 Name Plate 1
4 APY01T586-P0 Gauge Cover 1
5 APB87-480-K0 Bottom Ring 1
6 APB91H4872K0 Peg Frame Comp 1
7 APE76$5362 Bottom Plate 1
8 APE51M586$$U Container Comp A 1
9 APH62-480-X0 Communicating Bushing 1
10 APH95-480-X0 Container Packing 1
11 APB30T585-W1 Upper Frame Comp 1
12 APY02T585-P0 Decoration Panel 1
13 APB33-4801K0 Lock Lever A 1
14 APN08H562 LED Holder 1
15 APN61M586-0U Lamp Ass’y Unit 1
16 APB52T585 Board Holder B 1
17 APS01M586-0U Thermal Fuse Comp. 1
18 APE72-4802 Cover Plate 1
20 APE96T585 Hold Spring A 1
21 APS05-3751 Thermostst 1
22 APN07H48720U Plug Comp. 1
23 APC01H562-0U Case A Comp. 1
24 APB20-184 Ball A 1
25 APJ01H562-$U Water Pipe Comp. 1
26 APD42H562 Feed Water Pipe 1
27 APB01H560-P0 Lid Comp. 1
28 APB01-5361P0 Lid 1
29 APB10H560-P0 Lock Knod A 1
30 APH50H560-P0 Stopper Comp. 1
31 APB25-536-P0 Supporting Plate 1
32 APY10H560-W1 Caution Label 1
33 APH12-4802 Lock Spring B 1
34 APB11-4803 Lock Knob B 1
35 APH11-229 Lock Spring A 1
36 APM00-536-0U Pump Comp. 1
37 APC31-229 Valve A 1
38 APH86-1411 Seal Ring 1
39 APH01-229 Spring A 1
40 APB23-229 Shaft 1
41 APH65-536-0S Rubber Packing Set 1
42 APB07-536 Steam Way A 1
43 APE07-536 Inner Lid 1
44 APY57M487 Sirim Label 1
Small Standard Metal Part
Ref.No. Part No. Part Name NC-TWS30
A XTN4+12CZM Pan Head tapping Screw 8
B ANB1750J999A Deitite Screw 3
C APK51-5291 Screw A 1
D APK55H560 Sleeve 1
E XTB35+12BFJ Binding Head Tapping Screw 2
F XTN4+12BFJ Screw 3
G APK51-5321 Truss Head screw 1
H APK52-4871 Screw B 1
Packing Specification
Ref.No. Part No. Part Name NC-TWS30
APZ01M586-P0 Carton Box 1
APZ02J566 Pad A 1
APZ03J566 Pad B 1
APZ04J566 Pad C 1
APZ65J566 Protection Bag 1
APZ05M585 Instruction Manual 1
AXZ15X50A025 Polyethylene Bag 1
APZ10M608 Written Guarantee 1

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NC-TWS30
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7. Packing
Polyethylene bag
Power cord
Pad A
Instruction manual
Pad B
Protecting Bag
Pad C
Carton box
Written Guarantee