FUSE PROTECTION
1. To change a fuse
Unplug the power cord from
the AC receptacle in the back of the control box to
expose the Fuse Compartment.
2. Use the blade of a small screwdriver
in the slot
of the fuse holder and gently pry outward. The
active fuse is in the back of the holder and a
spare fuse is in the front compartment. If the
glass case of the active fuse is darkened, the fuse
is blown. From the underside of the drawer, push
out the blown fuse using a small screwdriver.
Be sure the micromotor is not being overloaded,
the line voltage is correct, matching setting and then
replace the blown fuse with the spare fuse. It is a
good idea to always keep a spare fuse in the front
compartment to avoid lost time if there is a future
blown fuse. To avoid overloading the micromotor
always use the same type and ampere rating as the
original: GDB 5 Amp, 250V, 5mm x 20mm.
If, after replacement, the fuse blows again, the
micromotor has a fault. The unit should be analyzed by a
qualified technician, or returned to the factory for service.
See Repair Services.
Back of the control box
2- Pry with screwdriver
Spare
In use
Fuse
Fuse
1- Remove Power Cord
Fuse Compartment
MAINTENANCE
The H.MH-140 has permanently lubricated ball bearings
that do not require lubrication. Putting even a small
amount of oil into the handpiece can damage it.
Cleaning the Handpiece
Use the Handpiece in as clean and dust free an
environment as possible.
If the Micromotor Handpiece is used for wood-
carving, it should be cleaned after every use.
A
cloth with a small amount of alcohol solution can be
used to clean the outside of the handpiece if neces-
sary.
Do not use any other cleaning fluids or
immerse handpiece in any liquid.
The H.MH-140 Handpiece is
not autoclaveable.
Cleaning the Bore in the Spindle
If you are working in dusty conditions or generat-
ing a lot of dust particles you may need to remove
the collet for cleaning. With front of Handpiece in
‘Unlock’ use a Q-tip to clean out the bore in the
spindle.
The metal nose cone needs to be tight
to hold the front housing in place, to insure
that the the full stroke of the collet operating
mechanism works properly.
Nosecone
Wrench
Replacement Parts and Supplies
Part No. Description
HP6-994
Nosecone Wrench
HP6-993
Collet Wrench
HP6-933
Handpiece Cradle
HP6-610
Handpiece Holder
HP6-101
Fuse GDB 5 Amp, 250V, 5mm x 20mm
HP6-117B
Collet for 1/8” diameter accessories
HP6-117
Collet for 3/32” (2.35 mm)
diameter accessories
HP6-117C
Optional
Collet for 3 mm diameter
accessories
CP10831
Detachable Cordset, 6’ North America
CP10834
Detachable Cordset, 6’ United Kingdom
CP10835
Detachable Cordset, 6’ Continental
Europe
CP10836
Detachable Cordset, 6’ Australia
CP10838
Detachable Cordset, 6’ Israel
Optional Collet Adapters
Great way to use smaller diameter shank accesso-
ries without changing the collet. Available from your
favorite Foredom dealer or:
www.foredom.net
Accessory
Collet Size
Shank Size
Part No.
3/32
″
(2.35 mm) to 1/16
″
1/16
″
HPL4-3233
1/8
″
to 1/16
″
1/16
″
HPL4-3234
3.0 mm to 3/32
″
(2.35 mm) 3/32
″
(2.35 mm)
HPL4-3235
1/8
″
to 3/32
″
(2.35 mm)
3/32
″
(2.35 mm)
HPL4-3236
3.0 mm to 1.6 mm
1.6 mm
HPL4-3237
