Duro Dyne Platinum Edition MF70 User manual

MF70
PINSPOTTER
ITEM# 27180
MACHINERY
DIVISION
OWNER’SOWNER’S
MANUALMANUAL
®

TIMER ADJUSTMENTTIMER ADJUSTMENT
The MF70 has been designed and built to withstand
rugged shop. Constant, trouble-free operation is as-
sured with a minimum of maintenance. The GUN TIP,
the GROUND CLAMP and all CABLE CONNECTIONS
should be kept clean to maintain a good electrical
contact. Wire brush the parts to remove any oxida-
tion or adhesive that may have accumulated during
the fastening operation.
The timer dial facing you on the front panel of the
unit, determines the duration of the weld cycle. For
maximum efficiency of the unit, the weld cycle should
be set for the shortest length of time necessary to
provide a good weld. An excessive amount of time does
not improve the weld. On the contrary, the resulting
weld may not be an acceptable one. It is recommended
that at the start of a production run, using a given
length of pin with a given gauge of metal, the opera-
tor take a few moments to determine the minimum
timer setting to perform the job and leave the timer
at that point.
NOTE: There is a common misconception that the
longer the weld time, the stronger the weld. This is
not true. It is important that you follow the above
instructions for maintaining the minimum weld time.
MAINTENANCEMAINTENANCE
ELECTRICAL REQUIREMENTSELECTRICAL REQUIREMENTS
Where duct is too large to put on a bench, snap the
ground clamp onto the duct and secure the insulation
quickly by welding the Clip Pins inside or outside of
the ducts as required
BRING MF70 TO THE WORKBRING MF70 TO THE WORK
MF70 AS A BENCH TOOLMF70 AS A BENCH TOOL
Connect the MF70 to a 60 amp power supply. (208-
230 volts – 60 cycle). The MF70 uses 208 – 230
volt single phase. To wire to 208-230 volt single
phase, the green lead is ground and the white and
black leads are power. It is suggested that the unit
be permanently wired into a 60 amp disconnect box
fitted with 60 amp circuit protection.
To use your work bench as a welding table, set the
MF70 alongside or on top of the work bench. Cover
the bench top with a copper sheet (.025 inch) which
will act as a permanent ground when the duct work
is placed on the table top. Attach the MF70 ground
clamp to the duct work or copper bench top. The Clip
Pins will quickly weld every time with no burn marks
or wasted pins due to misfires.
INSTALLING CLIP PINSINSTALLING CLIP PINS
Clip Pins are welded as easily as "A", "B", "C".
"A""A"
Press down through the insu-
lation, twist the gun, and pull
the trigger. Do not release
the trigger until the timer
cycle has ended.
"B""B"
Position the Clip pin on the
Magnetic tip of hand gun.
The Clip Pins are
permanently welded
in position flush with
the insulation.
"C""C"
SERVICESERVICE
The MF70 has been designed and built to withstand
rugged shop usage. The Indicator lights on the front
panel will help you to diagnose minor problems. If your
MF70 fails to operate follow this simple procedure to
find the defective component.
1. Pull the trigger and watch the lights. The green
light (24 volts) and then the red light (220 volts)
should flash on and off.
2. If only the green light comes on, go to step 4.
3. If neither light comes on, press the WELD CYCLE
TEST switch on the front panel.
A.If both lights flash and the transformers do not
hum go to step 5.
B. If both lights flash and the transformers hum,
the problem is either a bad trigger switch or
bad switch cable.
C. If only the green light flashes, go to step 4
D.If neither light flashes, replace 24 volt trans-
former.
4. Replace the weld activator.
5. The problem is probably a bad weld transformer.
Call technical service for further assistance.
(1-800-899-3876)

MF70 WIRING DIAGRAMMF70 WIRING DIAGRAM
BC
NOTES:
= BUTT CONNECTOR
1-ALL WIRES ARE 16Ga
2-
GG 1 2 3456 7 8 9 10 11 12
24V TRANSF
BLK
BLU
ORG
RED
YEL
RED(12Ga)
1/L1
4/A2
3
2/T1
1
3/A1
WELD ACTIVATOR
RELAY
BLU(16Ga)
5
2
4
TIMER
VIO(20Ga)
BLU
BLU(16Ga)
RED(12Ga)
BLK(12Ga)
BLK
GRN/YEL(16Ga)
BLK(20Ga) BLK(20Ga) YEL(16Ga)
BLU(16Ga)
SWITCH
CABLE
BLU(16Ga)
YEL(16Ga)
TRANSF
WELD
HI OUTPUT
COPPER GUN CABLE
BUSS BAR
CABLE
GROUND
BUSS BAR
COPPER
GRN/YEL(10Ga)
LOW OUTPUT
COPPER GUN CABLE
BUSS BAR
RED
BLK
WHT
YEL
198V 220V 242V 264V
BLU
0V
IN
POWER
BLK
GRN
WHT
WELD CYCLE
TEST
POWER
WHT(12Ga) WHT(12Ga)
LIGHT
BLK(12Ga)
220V OUTPUT
BLK(20Ga)
VIO(20Ga)
BLK(20Ga)
INDICATOR OFF
ON
POWER
SWITCH
YEL(16Ga)
VIO(20Ga)
BLU(16Ga)
24V INPUT
INDICATOR
WELD
TIME
BC BC BC BC BC BC
BLK(20Ga) BLK(12Ga)
RED(20Ga)
BLK(20Ga) BLK(20Ga)
VIO(20Ga) VIO(20Ga)
YEL(16Ga)
BLU(16Ga)
WHT
WHT(12Ga)
(12Ga)
BLK
(12Ga)
GRN/YEL(16Ga)
GRN/YEL(16Ga)
BLU(16Ga)
YEL(16Ga)
BLU
VIO(20Ga)
BLU(16Ga)
YEL(16Ga)
RED
ORG
BLU
YEL
LATEST: 12-16-21/JO/REV-E
RED
(20Ga)
RED
(12Ga)
UNLESS OTHERWISE SPECIFIED
MF70

PARTS LOCATIONPARTS LOCATION
27316 Red
Status Light
17309 Power Switch
17320 Weld
Potentiometer
27326 Knob
17308 Universal
Amber Light
27315 Green
Status Light
39110 Test
Switch
17079 Rubber Foot
27213 Female Flush
Mount Camlock
17327 Switch Cable
Receptacle
27094 220 Volt
Transformer
17310 24 Volt
Transformer
17140 Weld Activator
27354 20-6 Push-in
Term Grnd Bock
27351 Push-In
Term Block End Plate
27353 22-12
Push-in
Terminal Block
27352 20-6
Push-in Term
Block
27354 Terminal
Block Jumper
27355 22-12
Push-in Term
Grnd Block

PARTS LOCATIONPARTS LOCATION
27100 Screws (6)
27103 Gun Body (Rt & Lft Halves)
27102 Spindle Shaft
27103 Gun Body (Rt & Lft Halves)
27101 Taper Adapter
27104 Face Plate Nut
27099 Trigger Switch (No Leads)

MF70 PARTS & SPECIFICATIONSMF70 PARTS & SPECIFICATIONS
ITEM DESCRIPTION
17049 Male Camlock
17079 Rubber Foot
17140 Weld Activator
17288 Switch Cable Plug
17308 Universal Amber Light
17309 Power Switch
17320 Weld Potentiometer
17327 Switch Cable Receptacle
27005 TP-2 Tip
27094 220 Volt Transformer
27095 Ground Clamp Assembly - 10ft
27099 Trigger Switch - No Leads
27100 Thread Form Screw - 6pk
27101 Tapered Adapter
27102 Spindle Shaft
27103 Gun Body (Rt & Left)
27104 Face Plate Nut
27213 Female Flush Mount Camlock
27217 Line Cord
27230 TP-9 Tip
27253 Line Cord - Strain relief
27315 Green Status Light
27316 Red Status Light
27318 Case Top Cover with Handle
27322 Top Handle
27326 Weld Potentiometer Knob
27343 Socket Cover
27351 Push-In Term Block End Plate
27352 20-6 Push-in Term Block
27353 22-12 Push-in Terminal Block
27354 MF Terminal Block Jumper
27355 22-12 Push-in Term Grnd Block
27356 20-6 Push-in Term Grnd Block
39110 Test Switch
44091 24V Multi-Tap Transformer

NOTES

Duro Dyne Corporate Headquarters, Bay Shore, NY
631-249-9000 • Fax: [phone]
Duro Dyne Midwest • Duro Dyne West • Duro Dyne Canada
www.durodyne.com • E-mail: [email protected]
Please Visit Our Website
www.durodyne.com
for the most up to date product information.
®
MACHINERY DIVISION
© 2022 Duro Dyne Corporation
Printed in USA 2/1/2021
BI027409