Oreck DutchTech DTX 1100 User manual

Increase Quality Through Interaction with the Field
The Oreck Manufacturing Company
8144 Dutch Tech Tune-Up & Service Guide
10/08/2007
ompiled by Clark DeNoble C
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Table of Contents
Tune-up Pages 3-7
Wiring Diagrams
DTX1100/1200 Page 7
DTX1300/1400 Page 8
Troubleshooting DTX1300/1400 Electrical
Circuits Explained
Test Points & Troubleshooting Page 9-13
Disassembly Figures of DTX1300/1400 Pages 13-23
Cord Winder Replacement w/o Disconnecting Everything Page 24
Cord Winder Disassembly Pages 25
Tighten the Tension on the Cord Winder Page 26
Helpful Assembly Hints Page 27
Hose Handle Interior Page 28
EBK340 Power Nozzle Service Pages 28-34
EBD280/340 Motor Cog Removal Page 34
DTX1100/1200 Rear Cover Removal Pages 35-39
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Tune-Up DTX1300/1400
1. Functional Checks (Attach Hose and all other Powered Accessories)
a. Cord Winder
b. Hose Switch Main Motor only On-position Left
c. Main Power Switch On/Off
d. Leave Main Power Switch On
e. Main Motor Suction
f. Motor Watts Control Function-250 to 1300/1400
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g. DTX 1300-Park Switch On/Off -normally On, push in to turn unit Off
h. Hose Switch Off-position Center
i. Hose Switch Main Motor and Power Nozzle On-position Right
j. Power Nozzle Brush Roll
k. Remove Hose Assembly
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l. Rotate Swivel forwards and backwards several times. Should be
smooth without snaps and clicks.
m. Front Wheel and Swivel
n. Rear Wheels
o. Accessory Cover
p. Repair and/or replace parts as needed
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2. Clean and Inspect
a. Power Cord
b. Remove
i. Inner Filter Bag
ii. Dust Chamber Filter
iii. Exhaust Filter
c. Dust Chamber Filter & Holder
d. Canister Externals
e. Hose Assembly
f. Wand/Power Nozzle Assembly
g. Brushroll
h. Accessories
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3. Replace
a. Inner Filter Bag
b. Dust Chamber Filter
c. Exhaust Filter
Investigative and Repair Methods
DTX1100/1200 Wiring Diagrams
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B
N
H
N
L
C
A
1
2
3
4
5
DTX1300/1400 Wiring Diagrams
Important: To operate the main motor either the hose must
be connected or externally short C & L receptacle together
using a wire with blade terminals at both ends or cut off a
hose plug end, remove the conductor cover and connect L
& C together internally. Reassemble.
A B
N L C
C L N
Power Nozzle Receptacle Hose Receptacle Hose Plug
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Main Motor Only Hose Handle Switch Toggled Left
Current flows from the AC receptacle through the hot blade of the power cord
plug. Cord winder interconnects, main power switch, then branches (Piggyback)
in one direction to apply power to the control board to operate it’s circuitry and
the other direction through a harness to the line or L position of the swivel, up the
hose to the handle assembly, through the switch, back down the hose to control
or C position of the swivel, through the harness , into the control board, then out
the control board and into the motor, out the motor back to the control board, out
the control board, branching to the neutral or N position of the swivel for use
when the power nozzle is activated, back through the cord winder, down the
neutral leg of the power cord and out the neutral blade of the power cord into the
AC receptacle.
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Increase Quality Through Interaction with the Field
Main Motor Plus Power Nozzle Handle Switch Toggled to the Right
Toggling the handle switch from left, past middle, to the right leaves the main
motor as described but applies AC voltage through the handle switch, receptacle,
harness and power nozzle motor. Then out the motor, down the hose, through
neutral or N position on the swivel and harness to the unit’s neutral.
When Nothing Works
Use a Multimeter in Ohms or a Continuity Tester to:
1. If the problem is intermittent you should consider performing steps 1 & 2
while flexing components (swivel, harness, power lead to power switch,
power switch, power lead to cord winder, cord winder contacts) to save
time.
2. Check the hot side between the hot blade of the power cord plug and the
L or center slot on the swivel. This checks the hot leg of the power cord,
cord winder, interconnecting leads, main power switch, more leads,
harness and swivel.
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Increase Quality Through Interaction with the Field
a. If you don’t have continuity then back track until you get it then
troubleshoot the components you had to skip until you find the
culprit (Swivel, harness, power lead to power switch, power switch,
power lead to cord winder, cord winder contacts, power cord).
b. If you do have continuity then continue to 2.
3. Check the neutral side between the neutral blade on the power cord plug
and the neutral terminal on the control board. This checks power lead to
the cord winder, cord winder contacts and neutral leg of the power cord.
a. If you don’t have continuity then back track until you get it then
troubleshoot the components you had to skip until you find the
culprit (Power lead to cord winder, cord winder contacts, power
cord).
b. If you still have uninterrupted continuity then see step 1, the AC
Voltage source must be suspect or there are multiple problems
with the unit.
When Main Motor Works But The Power Nozzle Does Not
Power Nozzle Receptacle B
On the right when seen from the front.
Power Nozzle Receptacle A
On the Left when seen from the front.
Use a Multimeter in Ohms or a Continuity Tester to:
1. If the problem is intermittent you should consider performing steps 1 & 2
while flexing components (swivel, harness, power to power head, handle
switch assembly, power lead connections up in the handle or down at the
hose end blade to N) to save time.
2. Since the main motor works we only need to with the portion of the circuit,
components and connections that affect the power nozzle.
3. Toggle the power nozzle handle switch to the right. Check between the
hot blade of the power cord plug and the B receptacle on the power nozzle
(Be sure the main power switch is on).
a. If no continuity then the problem should be in the power nozzle
handle switch assembly.
b. If you measure continuity then check the between the neutral blade
on the power cord plug and the neutral or A receptacle of the power
nozzle handle.
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Increase Quality Through Interaction with the Field
i. If you see continuity then the problem is in the power nozzle
assembly.
ii. If you don’t see continuity then check the between the
neutral blade on the power cord plug and the neutral/N slot
on the swivel.
1. If you see continuity then the problem is in the hose
handle assembly.
2. Check continuity of the components until you find the
problem.
Power Nozzle Works Main Motor Does Not-Toggle the Hose handle Switch
to the Right
Use a Multimeter in Ohms or a Continuity Tester to:
1. If the problem is intermittent you should consider performing steps 1 & 2
while flexing components (swivel, harness, power to power head, handle
switch assembly, power lead connections up in the handle or down at the
hose end blade to C) to save time.
2. Since the power nozzle works we only need to look at the circuit,
components and connections that affect the main motor (which is about
everything).
3. Check that all harness and power leads are connected to the control
board. If disconnected the motor will isolated and won’t work.
4. Check for continuity between the red lead on the control board and the hot
plug blade of the power cord.
a. If you have continuity then that means all components on the hot
side up to the control board are good.
5. Check for continuity between the piggyback white leads on the control
board and the neutral plug blade of the power cord.
a. If you have continuity then that means all components on the
neutral side from the control board through the power cord are
good.
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Increase Quality Through Interaction with the Field
6. Remove the insulated white and black leads from the control board.
Perform a continuity check between these two leads. They are the motor
leads. This checks the motor leads and motor.
a. If you have continuity in steps 4, 5 & 6 then it leaves the control
board as the problem. Reconnect leads to control board.
b. A way to confirm this possibility is to use a wire lead with alligator
clips on both ends. Clip one end to red terminal with red lead
connected and the other end to the insulated black terminal with
lead connected.
i. Toggle the hose handle switch to center/Off.
ii. Plug the power cord into an active outlet.
iii. Toggle the switch to the right and left, the motor should run
in both positions.
c. If you don’t have continuity the likely problem is a dislocated motor
lead or rarely the motor.
If you can successfully apply these processes to the Dutch Tech then you should
have little problem using continuity checks to isolate problems in other units.
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Disassembly
Step 1
Service Screw
Step 2
Park Interlock Switch
Main Power Switch
Cord Winder Actuator
Park Cover & Pedals Removed
Step 3
Motor Speed Control
Slide Panel Removed
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Step 4
Remove Park
Step 5
Cord Winder Actuator
Step 6
Remove Circuit Board Holder
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Step 8
Remove Motor Speed Control Drive Wheel
Step 9
Open Circuit Board Holder
Step 10
Remove Main Power Switch
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Step 11
Remove Check Bag Indicator Assembly
Step12
Remove Harness Cord Clamp
Step 13
Accessory Cover & Spring
Step 14
Harness Lead Lid Cover & Screws
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Step 15
Unsnap one side and remove cover.
Remove Dust Cover
Step 16
Remove Upper Housing Screws
Remove Upper Housing
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Step 17
If you are unsure about what screws
go where leave them in their bosses
until needed.
Check Bag Indicator Tube
Step 18
Retaining Plate
Pull out the bumper from the front
of the retaining plate to expose
the retainer plate snaps (4).
Remove Buffer Strap
Step 19
To unfasten the rear snaps stick a flat
head screwdriver blade down behind
the rib. Push the handle of the
screwdriver away and down.
Unsnap Retaining Plate
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Step 20
Dust Chamber/Motor Housing/Back Lid Assembly Screw Locations
Step 21
Back Lid Screw Locations
Dust Chamber
Motor Housing
Back Lid
If removing the assembly
only, perform steps 21, 23
& 24 before removing the
assembly from the lower
housing.
Step 22
Cord Winder Cooling Tube
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