Charnwood 1420V User manual

ELECTRONIC VARIABLE SPEED LATHE
OWNERS MANUAL
MODEL: 1420V
Charnwood, Cedar Court, Walker Road,
Hilltop Industrial Estate, Bardon Hill, Leicestershire, LE67 1TU
Tel. [phone] Fax. [phone]
email: [email protected] website: www.charnwood.net

GENERAL SAFETY RULES
WARNING: Do not attempt to operate the machine until you have read thoroughly and understood
completely all instructions, rules, etc. contained in this manual. Failure to comply may result in accidents
involving fire, electric shock, or serious personal injury. Keep this owner's manual and review frequently for
continuous safe operation.
1. Know your machine. For your own safety, read the owner's manual carefully. Learn its application and
limitations, as well as specific potential hazards pertinent to this machine.
2. Make sure all tools are properly earthed.
3. Keep guards in place and in working order. If a guard must be removed for maintenance or cleaning,
make sure it is properly replaced before using the machine again.
4. Remove adjusting keys and spanners. Form a habit of checking to see that the keys and adjusting
spanners are removed from the machine before switched it on.
5. Keep your work area clean. Cluttered areas and workbenches increase the chance of an accident.
6. Do not use in dangerous environments. Do not use power tools in damp or wet locations, or expose
them to rain. Keep work areas well illuminated.
7. Keep children away. All visitors should be kept a safe distance from the work area.
8. Make workshop childproof. Use padlocks, master switches and remove starter keys.
9. Do not force the machine. It will do the job better and be safer at the rate for which it is designed.
10. Use the right tools. Do not force the machine or attachments to do a job for which they are not
designed. Contact the manufacturer or distributor if there is any question about the machine's suitability for
a particular job.
11. Wear proper apparel. Avoid loose clothing, gloves, ties, rings, bracelets, and jewellery which could get
caught in moving parts. Non-slip footwear is recommended. Wear protective hair covering to contain long
hair.
12. Always use safety glasses. Normal spectacles only have impact resistant lenses. They are not safety
glasses.
13. Do not over-reach. Keep proper footing and balance at all times.
14. Maintain machine in good condition. Keep machine clean for best and safest performance. Follow
instructions for lubrication and changing accessories.
15. Disconnect the machine from power source before servicing and when changing the drive belt.
16. To avoid accidental starting, make sure the switch is in the OFF position before plugging in the mains
cable.
17. Never leave the machine running unattended. Turn the power off. Do not leave the machine until it
comes to a complete stop.
18. Do not use any power tools while under the effects of drugs, alcohol or medication.
19. Always wear a face or dust mask if operation creates a lot of dust and/or chips. Always operate the tool
in a well a ventilated area and provide for proper dust removal. Use a suitable dust extractor.

ADDITIONAL RULES FOR LATHES
Never attempt to adjust any part of the workpiece whilst the lathe is still in motion. Wait until the workpiece
has come to a complete stop.
1. Ensure that chuck keys, tommy bars and similar items are removed before the lathe is started.
2. Always stand to one side when you start the lathe so that if anything does fly off e.g. a loose piece of
bark, you will be out of the line-of-fire.
3. When mounting a new piece of timber, rotate the wood through 360oby hand to ensure that it will not hit
the tool rest or the bed of the lathe and then start the lathe at its slowest speed. When you are certain that
that the work is secure and not too out of balance set the lathe to the normal turning speed.
4. Always check the rotation speed before switching the lathe on to avoid the risk of starting it whilst it is set
to run at too high a speed.
5. The speed of the lathe must be adjusted to suit the size, balance, length and condition of the timber
being turned. The greater the diameter of the work, the slower the rotation speed needs to be. If the piece
you are turning is out of balance, then you must start turning at a low speed, until it is balanced.
6. The tool must rest firmly on the tool rest before it is brought into contact with the rotating wood and must
never be lifted off the tool rest as long as it is in contact with the timber.
7. Before sanding, polishing or doing anything else that brings your fingers close to the work, remove the
tool rest. Getting your fingers trapped between the tool rest and the work will at least be very painful and
may cause serious injury.
8. Never wrap the sandpaper of polishing cloth round the work. If it tightens up it will pull your fingers into
contact with the timber and may lead to serious injury.
Important
Risk of Injury! Wear Eye Wear Ear
Never reach into Protection Protection
Moving parts
Introduction
In order to get the most out of your lathe, please read through this manual and safety instructions before
use. Please keep the manual in case you need it in the future.
Rating Description
Hobby: Suitable for Weekend DIY'ers and woodworking enthusiasts.
Generally lighter weight machines with lower power ratings and smaller tooling capacities. Typically only
ever used by one person for short periods of time or longer periods of time infrequently. Machinery should
be well maintained in a clean, dry environment such as a home workshop, garage or timber shed.
Expected maximum use of 100 hours annually.
Please Note: Using a product in excess of its rating will void the manufacturer’s free warranty.

Technical Data
N.B. The distance between centres will vary and be dependent on the type of centres or accessories used.
Maximum distance is 500mm (20”).
Max. spindle length (without centres fitted)
500mm (20")
Max. spindle length (with centres fitted)
430mm (17")
Distance over bed
350mm (14")
Motor DC (Carbon Brush)
750w (1hp) 50hz, 240v
Speed Range (Forward & Reverse) Low
Medium
High
250 -750rpm
600 -1700rpm
1200 -3550rpm
Spindle thread size
M33 x 3.5mm
Spindle tapers
MT2
Indexing Positions
24 (every 15 degrees)
Dimensions (WxDxH)
970 x 520 x 300cm
Weight
57kg
Rating
Hobby
Product Guarantee
1 Year
Main Components
Headstock Drive Centre Tool Rest Lathe Bed Tail Centre Tailstock
Tool Rest Cam Lock Lever Tailstock Cam Lock Lever
Tool Rest Height Lock Tail Centre Lock
Tailstock Handwheel

Unpacking
The Lathe is packed in 1 carton.
Do not dispose of the packaging until
the lathe has been fully assembled and
tested. It will be required in the unlikely
event that a return is required.
This part of the assembly requires 2
people:
Unpack the carton and remove the
contents.
Check the loose items are all present. If
anything is missing, please contact us.
Tool Rest Banjo
Rubber Foot
Carry Handle
Knockout Bar
Tail Centre
Drive Centre
Tool Rest
Service Tools
Spindle Spanner
Decide where you wish to mount your lathe. Ideally, the height of the spindle should be approximately
level with your elbow when standing/sitting in a working position.
The lathe is sufficiently heavy and stable to be used without fixing to a base provided the workpiece is
not too large and the blank well balanced. For larger diameter blanks (6” plus) and unbalanced pieces, it
is recommended that the lathe is fixed to a suitable stand or bench.
In that case, do not install the rubber feet and mount directly using the threaded holes.
Assembly
Fit the feet
If you decide to bench mount your lathe,
without permanently fixing it, you should
now fit the four rubber feet into the four
threaded holes in the underside.

Assemble The Tool rest
Rotate the Tailstock Cam Lock Lever,
then slide the complete tailstock off the
right end of the Bed.
Line up the Tool Rest Banjo and rotate
the Tool Rest Cam Lock Lever so that
the Clamping Plate is in its lowest
position. Slide the Tool Rest Banjo onto
the bed.
Fit the Tool Rest into the banjo and lock
in place with the Tool Rest Height Lock
ratchet handle.
Refit the Tailstock.
Fit the Carry Handles
Use a 5mm Hex key to remove 2 bolts
from the end of the bed. Fit the handle
and re-tighten the 2 bolts.
The Carry Handles Double as onboard
storage for the accessories and service
tools.
Remove the faceplate
Insert the Knockout Bar through the hole
Use a hex key to undo the 2 grub
screws.
Fit the Spindle Spanner over the flats
Unscrew the Face Plate
The faceplate supplied with the lathe
has two locking grub screws.
It is very important to engage these
when running the lathe in reverse
direction.

Adjusting the Spindle Speed
The lathe has electronic variable speed
control. There are three ranges of speeds
which are obtained by changing the
position of the drive belt.
To adjust the drive belt position:
1) Remove the bottom pulley access door
by loosening the 4 bolts with a 3mm Hex
key. Then raise and lift off the access
door.
The approximate speed ranges are:
Left Hand Pulleys: 250 - 750rpm
Centre Pulleys: 600 - 1700rpm
Right Hand Pulleys: 1200 - 3550rpm
Remove the retaining screw
Open the upper belt cover

Loosen the Belt Tension Locking handle.
Lift the Belt Tension Lever and tighten the
locking handle.
Move the slack belt to the alternate set of
pulleys. Always remove the belt from the
larger pulley first.
Release the locking lever, apply light
pressure to tension the belt and then re-
tighten the locking handle.
Close the belt cover and re-fit the pulley
door.
After switching on the lathe, adjust the
speed using the variable speed control
dial.
Forward/Reverse Switch
Variable Speed Control
On/Off Switch
The actual spindle speed will be
displayed on the Digital Read Out.
Recommended Turning Speeds
Workpiece
Diameter mm
Roughing Cuts
RPM
General Cutting
RPM
Finishing Cuts
RPM
Under 50
1500
3200
3200
50-100
750
1600
2500
100-150
500
1000
1700
150-200
500
800
1250
200-250
500
650
1000
250-300
500
530
850

Forward / Reverse Direction
The Forward / Reverse switch should never be used when the lathe spindle is still rotating. Always stop the
lathe by using the OFF switch and wait for the workpiece to come to a standstill before switching direction.
IMPORTANT
When turning a bowl: The lathe should only
be used in reverse direction if the accessory
mounted to the headstock spindle is locked
onto the spindle with grub screws.
Some chucks are not equipped with any
form of locking and should never be used in
reverse.
The faceplate supplied with the lathe has
two thread-locking grub screws.
Using the Lathe
Fine adjustment of the tail centre is made by
undoing the Tail Centre Lock (by half a turn
only).
Then turn the Tailstock Handwheel to enable
the tail centre to be advanced or retracted.
It has a travel of 70mm.
When fully retracted the Tail Centre will be
automatically ejected.
To slide the tailstock along the bed, rotate
the Tailstock Cam Lock Lever.
When the tailstock is positioned where
required, clamp it firmly in place by rotating
the lever back to the locked position.
The height of the Tool Rest can also be
adjusted, using the Tool Rest Height Lock.
This type of lever can be rotated to a more
convenient position, without moving the
thread, by pulling the lever away from the
thread to disengage the ratchet teeth and
then rotating it.
The Tool Rest banjo can be slid along the
bed of the lathe.
To release the tool rest banjo rotate the Tool
Rest Cam Lock Lever.
The tool rest can now freely slide along the
bed. When it is positioned where required,
clamp it firmly in place by rotating the lever
back to the locked position.

Using the Indexing System
The lathe is fitted with an indexing system which allows the spindle to be locked in any of 24 positions in a
full 360 degree rotation, therefore in 15 degree intervals.
The indexing facility is useful for fluted columns, clock faces and accurate hole placements.
Index Pin Disengaged
Index Pin Engaged
Open the top belt pulley cover to expose
the indexing ring.
Mark a convenient position on the
headstock casting and turn the faceplate
to line up indexing position 1 with the
mark.
Then pull out and rotate the indexing pin,
until it springs forward and locks the
spindle.
To move onto the next position, pull out
the indexing pin, rotate the spindle by
hand until the next number required is
lined up with the mark, release the
indexing pin to engage the lock.
IMPORTANT: The indexing pin should never be used as a spindle lock
To remove accessories from the spindle, always use the spanner provided to hold the spindle.
Failure to do so, may result in damage to the pin and indexing wheel.

Routine Maintenance
Replacing the Drive Belt
Eventually, the drive belt will become worn
and require replacement.
1) Use a 3mm Hex key to remove the
bottom pulley access door.
2) Remove the chrome hand wheel from the
spindle by unscrewing it from the spindle.
Hold the spindle with the spanner and
unscrew the handwheel anticlockwise using
the knock-out bar as a lever.
3) Use a 3mm Hex key to undo 2 of the 3
bolts to swing the cover plate away to allow
access to the drive belt.
4) Open the top belt pulley access cover
5) Release the tension on the drive belt.
6) Remove the old belt by feeding it out of
the pulley access port.
7) Fit the new belt by following the
instructions in reverse.
Ensure that the V- grooves are on the inside
of the belt and correctly seated into the
grooves on the pulleys.
Replacing the Motor Brushes
The carbon brushes should be regularly
inspected and will need changing after
approximately 500 hours use, or when the block
has worn down to a length of 7mm.
1) Remove the motor from the machine by
removing the tension adjusting lever and the
pivot bolt on the rear side.
Unscrew the two brush covers found on either
side of the motor.
Withdraw the worn brush and spring, then
replace it with a new one.
Always replace both brushes at the same time.

Fault Possible Cause Remedy
Machine will not start Power supply not connected Check plug connections in rear of control unit
Fuse in plug blown Replace fuse
Fuse in Control Box blown Replace Fuse
Break in power supply cable Visually check cable - replace if necessary
Loose terminal on switch Remove switch and check connections
Switch failed Replace switch
Machine will not start, Speed Display Lit Indexing Pin Engaged Disengage Indexing Pin
Fuse in Control Box blown Replace fuse
Speed controller failed Replace speed controller
Carbon brushes worn Replace carbon brushes
Machine starts only when green button held Switch has failed Replace Switch
Machine starts to turn but slow speed only Failed variable speed circuit Check connection to speed dial
Spindle stalls but motor still running Loose drive belt Increase belt tension
Motor is running but spindle not turning Broken drive belt Replace drive belt
Motor is overheating Too much load on motor Reduce load - make shallower cuts
Airflow around motor restricted Keep motor clear of shavings
Spindle rotation slows during cut Excessive depth of cut Make shallower cuts
Chisels are dull Sharpen chisels
Worn carbon brushes Replace brushes
Loose drive belt Increase belt tension
CHARNWOOD 1420V LATHE TROUBLESHOOTING GUIDE

Charnwood 1420V Wiring Diagram

Declaration of Conformity
Charnwood Declare that Woodworking Lathe, Model 1420V
Conforms with the following Directives: Machinery Directive 2006/42/EC
EMC Directive 2014/30/EU
Conforms with the following UK Regulations: Supply of Machinery (Safety) Regulations 2008
Electrical Equipment (Safety) Regulations 2016
And further conforms to the machinery example for which the EC type examination Certificate No. AM
50387407 which has been issued by TUV Rheinland LGA Products GmbH, Tillystrasse 2, 90431,
Nurnberg, Germany.
I hereby declare that equipment named above has been tested and found to comply with the relevant
sections of the above referenced specifications. The machinery complies with all essential requirements of
the directives and regulations.
Signed: Dated: 08/02/2022 Location: Leicestershire
Richard Cook
Director
Please dispose of packaging for the product in a responsible manner. It is suitable for
recycling. Help to protect the environment, take the packaging to the local amenity tip
and place into the appropriate recycling bin.
Only for EU countries
Do not dispose of electric tools together with household waste material!
In observance of European Directive 2002/96/EC on waste electrical and electronic
equipment (EEE) and its implementation in accordance with national law, electric tools
that have reached the end of their life must be collected separately and returned to an
environmentally compatible recycling facility.
Your local refuse amenity will have a separate collection area for EEE goods

Charnwood 1420V Parts List
Part No
Description
Part No
Description
01
Rubber Foot
02
D.C. Motor
03
Belt Tension Lock Lever
04
Flat Washer
05
Motor Plate
06
Cap Head Screw
08
Grub Screw
09
Cap Head Screw
10
Bed
11
Belt Door
12
Cross Head Screw
13
Screw
14
Cap Head Screw
15
Flat Washer
16
Carry Handle
17
Cap Head Screw
18
Spring Washer
19
Headstock
20
Digital Readout Sensor
21
Location Pin Assembly
22
Spindle Pulley
23
Drive Belt 310J
24
Headstock Wheel
25
Locking Nut
26
Knockout Rod Assembly
27
Cover For Motor Pulley
28
Cap Head Screw
29
Grub Screw
30
Bearing
31
Circlip
32
Bearing 6005
33
Spindle
34
Cap Head Screw
35
Face Plate
36
Drive Centre
37
Revolving Tail Centre
38
Sleeve
39
Tailstock
40
Quill Lock Lever
41
Pin
42
Leadscrew
43
Tailstock Handwheel
44
Handwheel Axle
45
Washer
46
Handwheel Handle
47
Grub Screw
48
Tailstock Cam Lock Lever
49
Grub Screw
50
Tailstock Clamp Bolt
51
Clamping Plate
52
Nut
53
Circlip
54
Cross Head Screw
55
Cable Hook
56A
Tool Rest Stem 25mm Dia.
56B
Tool Rest Crossbar
57
Circlip
58
Tool Rest Banjo
59
Tool Rest Height Lock
60
Tool Rest Clamp Bolt
61
Tube
62
Tool Rest Cam Lock Lever
71
Cross Head Screw
75
RPM Digital Readout
77
Spanner
78
Allen Key 3mm
79
Allen Key 4mm
80
Allen Key 5mm
81
Allen Key 12mm
82
Knob
83
Motor Pulley
84
Motor
85
Power Lead
86
Circuit Board
87
Connector for Motor Plug
88
Connector for Power Lead
89
Electrical Box
90
Rubber Grommet
91
Speed Controller
92
Variable Speed Knob
93
Box Cover
94
Switch -KJD20
95
Cross Head Screw
96
Cross Head Screw
97
FWD/REV Toggle Switch
BRUSH
Carbon Brushes x2
VS
Control Unit Complete
Parts # 86-94 + 96

Charnwood 1420V Parts Drawing
Updated: March 2022
Charnwood, Cedar Court, Walker Road,
Hilltop Industrial Estate, Bardon Hill, Leicestershire, LE67 1TU
Tel. [phone] Fax. [phone]
email: [e-mail] website: www.charnwood.net