Fellowes POWERSHRED 3140 Series Operating manual

1
3140 / 4850 SERIES
Technical Service Manual
October 2014

2
TABLE OF CONTENTS
INDRODUCTION 1
SPECIFICATIONS 2-3
3140S/4850S 2
3140C/4850C 3
SAFETY 4
GENERAL MAINTENANCE 4
EXTERNAL CLEANING 4
INTERNAL CLEANING 4
INSPECTION 4
OPERATION 5-6
CONTROL PANEL 5
INDICATOR LED’S5-6
ECC 6
LUBRICATION 6
TROUBLESHOOTING 7-8
PAPER FEED PROBLEMS 7
ELECTRICAL PROBLEMS 7
MECHANICAL PROBLEMS 8
TOOLS AND SUPPLIES 8
CABINET AND HOUSING 9-11
MACHINE BREAKDOWN 9
HEAD ASSEMBLY 10
CABINET DOOR 11
PAPER WASTE BIN 11
CASTORS 11

3
MECHANICAL ASSEMBLY 12-14
CUTTING BLOCK 12
GEAR DRIVE 13
MOTOR 14
CUTTER TIMING 15-16
ELECTRICAL ASSEMBLY 17-23
CAPACITORS 17
POWER CORD 18
BIN FULL SYSTEM 18
MAIN PCB 19
POWER RELAY BOARD) 20
WIRING DIAGRAM 22
AUTO START SENSORS 23
NOTES 24
TECHNICAL SUPPORT CONTACT INFORMATION 25

4
Introduction
This Technical Service Manual contains the service and repair procedures for the Fellowes
Commercial office shredder Models 3140S/4850S and 3140C/4850C. The manual provides
maintenance procedures, a list of required tools, and a troubleshooting guide. In addition, the
manual contains a wiring diagram.
Use the troubleshooting guide for help in identifying a specific problem. Then turn to the
appropriate section in the manual for instructions.
Follow the service procedures carefully. Always note the location, number, color, and position of
parts and wires before removing them so that they can be reassembled correctly. If there are no
specific instructions for reassembling an item, simply reverse the disassembly procedure.
The maximum paper size for the shredders is standard letter and / or A size paper. These
shredders are sheet-fed. Please note that this machine ships with the cutting unit inside the
cabinet.

5
Model 3140S & 4850S
Model 3140S / 4850S is a Strip Cut shredder with the listed characteristics:
Cut Type
Strip Cut
Rated cut Size (Inch /
mm)
4mm
Rated Paper (g/m²)
20lbs. / 75 gram
Market Sheet Capacity
27 –30 Sheets
Rated Duty Cycle
Continuous
Speed (FPM)
16 FPM or 5m/minute
Bin Capacity (Gallon)
32 gallons or 120 liters
Bin Type
Plastic Bin (replaceable bags)
Throat Width
12” or 310mm
Recommended
Maximum Daily Use
12,000 Sheets
Frequency (Hz)
60 Hz
Rated Voltage (V)
120 V
Rated Amperage (A)
8.0 A
Rated Wattage (W)
640 W
Horse Power (HP)
1 HP
Motor Type
Induction
Cut Type
Strip Cut
Rated cut Size (Inch /
mm)
4mm
Rated Paper (g/m²)
70 gram
Market Sheet Capacity
30 –32 Sheets
Rated Duty Cycle
Continuous
Speed (FPM)
16 FPM or 5m/minute
Bin Capacity (Gallon)
26 gallons or 100 liters
Bin Type
Plastic Bin (replaceable bags)
Throat Width
12” or 310mm
Recommended
Maximum Daily Use
12,000 Sheets
Frequency (Hz)
50 Hz
Rated Voltage (V)
230 V
Rated Amperage (A)
3.2 A
Rated Wattage (W)
640 W
Horse Power (HP)
1 HP
Motor Type
Induction

6
Model 3140C & 4850C
Model 3140C/ 4850C is a Cross Cut shredder with the listed characteristics:
Cut Type
Cross Cut
Rated cut Size (Inch /
mm)
3/16” x 1-1/2” or 4mm x 40mm
Rated Paper (g/m²)
20lbs. / 75 gram
Market Sheet Capacity
22 –25 Sheets
Rated Duty Cycle
Continuous
Speed (FPM)
16 FPM or 5m/minute
Bin Capacity (Gallon)
26 gallons or 100 liters
Bin Type
Plastic Bin (replaceable bags)
Throat Width
12” or 310mm
Recommended
Maximum Daily Use
10,000 Sheets
Frequency (Hz)
60 Hz
Rated Voltage (V)
120 V
Rated Amperage (A)
8.0 A
Rated Wattage (W)
640 W
Horse Power (HP)
1 HP
Motor Type
Induction
Cut Type
Cross Cut
Rated cut Size (Inch /
mm)
3/16” X 1-1/2” or 4mm x 40mm
Rated Paper (g/m²)
70 gram
Market Sheet Capacity
25 –27 Sheets
Rated Duty Cycle
Continuous
Speed (FPM)
16 FPM or 5m/minute
Bin Capacity (Gallon)
26 gallons or 100 liters
Bin Type
Plastic Bin (replaceable bags)
Throat Width
12” or 310mm
Recommended
Maximum Daily Use
10,000 Sheets
Frequency (Hz)
50 Hz
Rated Voltage (V)
230 V
Rated Amperage (A)
3.2 A
Rated Wattage (W)
640 W
Horse Power (HP)
1 HP
Motor Type
Induction
UL File Number
N/A

7
Safety
When servicing a shredder, observe the following safety precautions:
Never put a hand, fingers, or foreign objects into the paper feed slot or throat.
Keep all loose articles of clothing, ties, jewelry, long hair, or other loose objects away from the
paper feed slot.
Always turn off and unplug the power cord at the wall outlet before doing any work on a
shredder.
Use only the specified replacement parts. (See the Parts manual).
General Maintenance
The shredders are designed to perform consistently with a minimum amount of maintenance. This
section contains recommendations for external and internal cleaning, inspection, and lubrication.
External Cleaning
Clean the exterior of the shredder with a soft cloth. Moisten the cloth with a mild solution of
detergent (such as dish-washing liquid) and warm water. Use detergent sparingly to avoid contact
with electrical parts.
Do not use flammable synthetic oil, petroleum-based products, or aerosol lubricants of any kind.
Do not use chemical cleaners, solvents, or aerosol sprays to clean the exterior of the
shredder.
Internal Cleaning
The shredder does not require periodic internal cleaning. However, when the shredder is being
serviced perform the following maintenance tasks:
Remove any paper strips or pieces that may have collected around the cutting assembly.
If lubricated parts are dusty; wipe away the dust with a soft cloth.
Use a small brush or vacuum to remove dust from the non-lubricated surfaces such as the
motor, cutting assembly, housing, and wiring.
Do not use chemical cleaners, solvents, or aerosol sprays to clean the interior of the shredder.
Inspection
When the shredder is being serviced, visually inspect it for defects such as loose screws, loose
terminals and connectors, and any other issues you may notice.
Correct any defects and test before returning the shredder to the customer.

8
Operation
The control panel on the housing top consists of the control panel button, and indicator LEDs.
Power Turns on the shredder and illuminates the power LED. This also enables the shredder to start shredding
paper.
Reverse Runs the shredder in reverse mode. Press and hold to activate.
Indicator LEDs
The 3140S/4850S and 3140C/4850C have three indicator LEDs on the Control panel.
Door open Disengages power to the motor until cabinet door is properly closed. Door icon will light up red until
door is properly closed.
Safety Flap Disengages power to the motor until the safety flap on the throat insert is in the down position.
(Safety flap in the “UP” position) (Safety flap in the “DOWN” position)

9
Remove paper (Paper jam) Disengages power to the motor until paper jam is removed.
ECC
The ECC (Electronic Capacity Control) measures the amount of paper going through the machine
per pass. This in done by a Hall Effect transistor located on the motor. As paper is shredded the
ECC measures the motor’s RPM. The lower the RPM the higher the ECC gauge will light up. (The
more paper that is inserted the lower motor RPM)
Lubrication
The 3140S/4850S requires no lubrication, unless cutters squeak.
The 3140C/4850C requires lubrication after every waste bag replacement.
Please use Fellowes Oil part # 3525001
WARNING: Do not use aerosol lubricants of any kind, as this could void the warranty.
ECC LED Gauge
ECC Hall Effect transistor

10
Troubleshooting
Troubleshooting the shredder begins with checking the machine for possible faults. Possible
causes for machine malfunctions include:
Paper feed problems
Electrical problems
Mechanical problems
Paper Feed Faults
Paper can become jammed if the paper is misfed. Paper may also jam if the waste bin is full or if
there is a build up of paper shreds along the underside of the cutting assembly.
The ECC and Mechanical Bin Full System help to identify paper feed faults.
CAUTION! Never attempt to force jammed material through the machine.
If paper misfeeds or shredder capacity is surpassed and shredding stops the shredder will
attempt to reverse the paper out.
CAUTION! The shredder may be damaged if you alternate too rapidly between forward and
reverse.
Electrical Faults
The most common electrical faults result from:
1. An opened cabinet door
2. Loose wires
3. A defective PC board
4. Bin full detection system not operating correctly
5. ECC not operating correctly
If the waste bin is not placed properly in the cabinet, the shredder will not operate:
The Door Open LED will help to identify this problem.
Check the door to make sure it closes properly and engages the door open switch.
Press the Power button on the Control Panel Button.
If paper is in the entry slot, and the shredder does not operate:
Check to see if the power on the Control Panel Button has been engaged.
Make sure unit is plugged into the wall outlet.
If the PC board is defective:
The shredder may not run at all.
Another indication that the PC board is defective might be if the shredder runs in reverse,
but not forward or the LED lights do not turn on.
If the Auto start sensors are defective:
The shredder will not be able to detect paper being inserted.
Constant run on may occur.
If the capacitor is defective:
A typical problem caused by a defective capacitor is limited or no motor function.
If the Bin full detection system is not operating correctly:
The bin full indicator will illuminate.
The shredder will not accept any paper.
If the Electronic Capacity Control (ECC) is not operating correctly:
The ECC gauge will illuminate without any paper having been inserted for shredding.
The unit will not shred.