Pro-Weld CD-212 Specifications

OPERATION/ MAINTENANCE
MANUAL
PRO
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CD -2 1 2 GAP
TABLE OF CONTENTS
1.0
INTRODUCTION
1
2.0
WARRANTY
1
3.0
UNPACKING YOUR UNIT
1
4.0
SUGGESTED SAFETY PRECAUTIONS
1
5.0
GENERAL DESCRIPTION
2
6.0
THE CD WELDING PROCESS
2
7.0
POWER REQUIREMENTS
3
8.0
SYSTEM SPECIFICATIONS
3
9.0
WELDING SYSTEM HOOK-UP
4
4
5
9.1
9.2
Straight Polarity
Reverse Polarity
10.0
SYSTEM OPERATION
6
11.0
GUN SET-UP
7
7
8
8
9
9
10
11
12
13
15
11.1
11.2
11.3
11.4
11.5
11.6
11.7
11.8
11.9
11.6
Standard
Installing or Changing Collets or Chucks
For Weld Pins with Collet Protector
Template Adapter
Collet Protector with Blunt Leg
Parts List Gap Gun
Adjusting Gap Gun
Installation of Collet
Adjusting Spring Pressure
Parts List LD CD Handgun
12.0
WELDABLE MATERIAL COMBINATIONS
16
13.0
CAUSES OF POOR OR ERRATIC WELDS
13
14.0
TROUBLE SHOOTING POOR WELDS
17
15.0
ROUTINE WELDER MAINTENANCE
18
16.0
ASSEMBLY –CD-212 CONTROLLER
19.20
21
16.1
PC Board Assembly Drawing
17.0
TROUBLE SHOOTING – ELECTRICAL
22
18.0
CHECK LIST CD-212 SYSTEM P.N. 100-0112
24
19.0
CHECK LIST CD-212 SYSTEM P.N. 100-0113
24
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CD -2 1 2 GAP
LIST OF FIGURES
1
CD CONTACT PROCESS
2
2
STRAIGHT POLARITY HOOK-UP
4
3
REVERSE POLARITY HOOK-UP
5
4
FRONT PANEL LAYOUT
6
5
STANDARD GUN SETUP
7
6
COLLET PROTECTOR SETUP
8
7
TEMPLATE ADAPTER GUN SETUP
9
8
COLLET PROTECTOR/BLUNT LEG SETUP
9
9
LIGHT DUTY CD GUN
14
10
HOT WELD
17
11
COLD WELD
17
12
ARC BLOW
18
13
WELD WITHOUT FOOTPIECE
18
14
GOOD WELD
18
15
PARTS LIST
19
16
PARTS LIST (continued)
20
17
PC BOARD
21
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CD -2 1 2 GAP
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1.0 INTRODUCTION
Your new stud welding equipment is carefully
constructed of the finest components and materials
available. Used properly, this equipment will give
you years of profitable, efficient service.
The system incorporates the latest in engineering advances, for completely reliable end welding of
mild steel, stainless steel, aluminum and lead free
copper and brass fasteners.
A careful study of this manual will enable you
to understand how the welder operates to insure
proper performance under all operating conditions.
2.0 WARRANTY
The electrical and mechanical components of
the stud welder are thoroughly performance inspected prior to assembly in the welder. The assembled welder is completely performance checked. The
welder is delivered to you in functional electromechanical condition.
All parts used in the assembly of the welder
and its accessories are fully warranted for a period of
1 YEAR from the date of delivery. In addition, the
welding capacitors are warranted for a period of 1
YEAR from the date of delivery. The printed circuit
boards used in all proweld equipment are warranted
for a period of 3 years.
Under the warranty, the manufacturer reserves
the right to repair or replace, at their option, defective parts which fail during the guarantee period.
Notice of any claim for warranty repair or replacement must be furnished to the manufacturer by the
purchaser within ten (10) days after the defect is first
discovered. The manufacturer does not assume any
liability for paying shipping cost or any labor or materials furnished where such cost are not expressly
authorized in writing.
The manufacturer does not warrant any parts or
accessories against failures resulting from misuse,
abuse, improper installation, maladjustment, or use
not in accordance with the operating instructions furnished by the manufacturer. The warranty is valid
only when studs are purchased from sources approved by the manufacturer or are of identical specifications to the manufacturer’s
CD -2 1 2 GAP
3.0 UNPACKING YOUR UNIT
Upon receipt of your unit, place it as close as
possible to the point of installation before unpacking
it. Do not operate the unit from an extension power
cord if possible. Once the unit is unpacked it is recommended that you inspect it for any physical damage.
Your unit has been completely assembled and
inspected at the factory. Upon receipt, the unit must be
hooked up to the recommended incoming power before welding. We recommend that you check that you
have received all the items listed on the shipping
check list. (see SECTION 18 or 19)
Place the unit in a large enough area to provide
adequate ventilation. Do not restrict the air flow
through the side louvers. Do not allow water to enter
the control housing.
4.0 SUGGESTED SAFETY PRECAUTIONS
In any welding operation, it is the responsibility of the welder to observe certain safety rules to insure his personal safety and to protect those working
near him.
Reference is directed, without endorsement or
recommendation, to ANSI Z49.1, Safety in Welding
and Cutting, and to AWG Publication A6,1-66, Recommended Safety Practices for Gas-Shield Arc Welding.
1. Always treat electricity with respect. Under
open circuit conditions, the welding machine
output voltage may be dangerous.
2. Don’t work on live circuits or conductors.
Disconnect the main power line before checking the machine or performing any maintenance operations.
3. Be sure the welding machine cabinet is
properly grounded to a good electrical ground.
4. Don’t stand in water or on a damp floor
while welding or weld in the rain. Avoid wearing wet sweaty cloths when welding.
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5. Don’t operate with worn or poorly connected cables. Don’t operate weld gun with
loose cable connections. Inspect all cables frequently for insulation failures, exposed wires,
loose connections, and repair as needed.
6. Don’t overload welding cables or continue
to operate with hot cables.
7. Don’t weld near flammable materials or liquids, in or near atmospheres, or on ducts carrying explosive gases.
8. Don’t weld on containers which have held
combustible or flammable materials, or on materials which give off flammable or toxic vapors when heated, without proper cleaning,
purging, or inerting.
9. Be sure to provide for proper ventilation
when welding in confined spaces.
CD -2 1 2 GAP
The system comes complete with power cord, weld
cables and gun. Just add the accessories required for
the stud size to be welded. This manual should provide all the information required for you to be able to
set up, weld, and maintain the CD-212 welding system.
6.0 THE CD WELDING PROCESS
Contact welding is the simplest and most
common method of CD stud welding. Practically
foolproof, it produces no reverse side marking in
most cases and is suitable for most commercial and
industrial applications.
First, the gun must be set-up with the proper
accessories for the length and diameter stud you are
going to weld. Refer to the CD Accessories Guide
and CD Stud Welding Gun Section for information
on accessories and gun set-up.
1
2
10. Never look at the electric arc without wearing protective eye shields.
Initial Contact
11. Always use the proper protective clothing,
gloves, ect.
12. Never strike an arc when near a bystander
who is unaware of the dangers of ultraviolet
light on their eyes.
5.0 GENERAL DESCRIPTION
CD-212 HEAVY DUTY PORTABLE
CD STUD/PIN WELDER
The CD-212 portable CD welder is a self contained heavy duty capacitor discharge power supply
capable of welding up to 1/4” flanged studs in mild
steel.
The CD-212 utilizes a solid state control board
for longer life and has been designed for easy maintenance and field service. This welder uses standard
110 volt AC line voltage.
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During Weld
3
4
Forced Into Molten Pool
After Weld
(FIGURE 1 CONTACT CD WELD)
The stud is first placed in contact with the
base material (SEE FIGURE 1). Verify that the gun is
held perpendicular to the work. Pulling the trigger
discharges the capacitors through the stud which vaporizes the tip. The proper tip design is critical. This
is what determines the length of time of the weld. An
arc is briefly sustained which melts the stud base surface and the work surface directly underneath the
stud. The spring pressure in the gun then forces the
stud into the molten pool, completing the weld in approximately six milliseconds.
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This technique, when equipment is set up properly,
is simple and easily mastered. The same power supply is capable of welding many different sizes and
materials of fasteners. If you require assistance in
selecting the proper accessories, contact our customer service department or your field representative.
7.0 POWER REQUIREMENTS
110 VOLT OPERATION
110 volt AC 60 H:
Circuit protection:
20 amps;
15 amp circuit breaker
(P/N: 104-0020)
Integral 9 foot power cord
IF EXTENSION REQUIRED
Cable Length
110 Volt
12’
#16/3
25’
#16/3
30’
#14/3
50
#12/3
8.0 SYSTEM SPECIFICATIONS
Weight:
26 Lbs.
Size:
9” W x 11 3/4” D x 8 1/2” H
22.9 cm W x 29.8 cm D x 21.6 cm H
Chassis:
14 Ga. Aluminum (Painted International
Orange)
Panel Controls:
Power
Voltage Controls
Weldable Materials:
Steel, Stainless steel, Aluminum, Copper,
Brass, Zinc coated, Galvanized
Weldable Stud Diameter:
14 Ga. Through 1/4” Flanged
(Max W.B. Dia. For AL=5/16” (1/4” thread)
Weld Rate:
12 per minute
Weld Voltage:
45-200 VDC
CD -2 1 2 GAP
Weld Mode:
Contact
Polarity:
Straight or Reverse
Power Required:
110 Volt AC 60 Hz 20 Amp
Circuit Protection:
15 Amp circuit breaker
3AG 1 Amp 250 volt fuses
(2 on PC Board)
STANDARD GUN & CABLE SPECIFICATIONS
WELD GUN-LIGHT DUTY PRECISION
CD CONTACT
Part Number:
300-0100 B Collet Gun
300-0101 Taper Tip Gun
Weight:
2 lbs. (not including cable)
( lbs. (including 25 ft. #4 weld cable & 16-4
SOW control cable)
Size:
6 1/2” x 5 3/4” x 2”
Weldable Stud Diameter:
14 Ga. Through 1/4” Flanged
Material:
High strength, impact resistant, glass fiber reinforced polycarbonate
Integral Gun Cable Length:
25 feet – #4 AWG
Connectors:
Male Camlok / 2 Pin Hubbell Male
Cables
Ground Cable:
(1) #4 x 15’
(P/N: 125-0100)
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CD -2 1 2 GAP
9.0 WELDING SYSTEM HOOK-UP
9.1
Straight Polarity (Standard Set-Up) (see Figure 2)
A. Connect ground cable connector (1A) into camlok (1). The camlok should be connected into the
receptacle marked GROUND. Twist until it locks. Attach “C” clamp (2) to the workpiece (5)
(CLEANED AREA).
B. Connect the gun control cable (3A) into the female receptacle (3).
C. Connect the gun weld cable (4A) into the receptacle marked GUN (4). Twist clockwise until it
locks.
D. Connect AC power cable to AC outlet.
NOTE:
The gun welding and control cables must be laid out in a straight line. Poor weld quality may result if
welding cables are coiled.
1
5
4
4A
3
1A
3A
Figure 2 Straight Polarity Hook-Up
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CD -2 1 2 GAP
9.2 Reverse Polarity (Recommended for brass or galvanized) (see Figure 3)
A. Connect ground cable connector (1A) into camlok (4). The camlok should be connected into the
receptacle marked GUN. Twist until it locks. Attach “C” clamp (2) to the workpiece (5) (CLEANED
AREA).
B. Connect the gun control cable (3A) into the female receptacle (3).
C. Connect the gun weld cable (4A) into the receptacle marked GROUND (1). Twist clockwise until
it locks.
D. Connect AC power cable to AC outlet.
NOTE:
The gun welding and control cables must be laid out in a straight line. Poor weld quality may result if
welding cables are coiled.
1
5
4
1A
3
4A
3A
2
Figure 3 Reverse Polarity Hook-Up
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CD -2 1 2 GAP
10.0 SYSTEM OPERATION
(see Figure 4)
1.
The CD-212 is designed for simple, yet precise operation.
2.
It has an “ON-OFF” rocker switch/indicator light (1) and a variable voltage control dial (2) on
the front panel.
3.
Before turning the unit “ON”, the voltage control knob (2) should be turned counter-clockwise
to the lowest setting.
4.
With all cables connected, turn the unit on by putting the rocker switch (1) in the “ON” position. The integral indicator light (1) will turn on.
Setting the Weld Voltage/Capacitance
2
1
Figure 4 Front Panel Layout
Page 6
Slowly turn the voltage control knob
clockwise to increase the weld voltage until the
indicator knob is pointing at the appropriate
number for the particular stud size that you are
welding. (See the set up information chart,
Below).
NOTE:
Once the voltage control knob is set to
a higher setting, turning it counter-clockwise
will NOT reduce the voltage on the capacitor
bank, until the toggle switch (1) is turned
“OFF” (for approximately 10 seconds).
The settings are marked with the voltages corresponding to various stud sizes. The
approximate voltages for each stud size is as
follows:
45 VDC
Min.
45-80 VDC
12 ga./#6
80-120 VDC
#8
120-160 VDC
#10
160-190 VDC
1/4”
200VDC
MAX.
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CD -2 1 2 GAP
11.0 GUN SET-UP
11.1 STANDARD (see Figure 5)
The standard gun set-up is used for welding the
majority of applications. It consists of the standard
adjustable face plate, two legs, a foot, B-collet, stop,
and spring for your specific stud size.
A step-by-step explanation of the correct way
to set-up and operate the standard CD gun.
To prepare for stud welding, it is necessary to
have the proper accessories for the stud to be
welded. Those required are the legs, footpiece,
spring, collet, and appropriate screws and washers.
A 3/32” and a 5/32” hex wrench are the only tools
needed for the adjustment of the gun.
For CD welding, the stud normally should be
engaged for all but 1/4” of its length, whenever possible. Selecting the proper stop will accomplish this
for you. The objective of the collet is to maintain a
firm grip on the fastener to assure correct alignment
and a good electrical connection, yet allow for ease
of loading.
Once the selection of the correct accessory is
made, assembly may begin. The footpiece is
mounted on the legs using 10-32 x 3/4” socket head
cap screws, inserted through the holes at the base of
the footpiece. These holes are recessed so that the
head of the screws will not protrude.
After assembling the legs and footpiece, insert
the collet and stop into the open end of the gun shaft.
Secure the collet in place with two set screws on the
shaft. Locate the legs, with footpiece attached, in the
holes provided in the gun faceplate. (It
may be necessary to back off the
socket screw in the faceplate to allow
the legs to enter the hole). Center the
opening of the footpiece around the
weld end of the fastener. Tighten the
footpiece in position at this time. Adjustment for the plunge which is the
distance the stud protrudes beyond the
end of the footpiece can now be made.
This is done by loosening the two 1032 x 1/4” set screws at the bottom of
the faceplate using the 3/32” Allen
wrench. Then sliding the legs for
proper adjustment. Refer to the set-up
chart for correct plunge distance (from
1/8” to 5/16”).
NOTE:
Correct set-up on all CD units is 1/8”5/16” plunge. This must be assured for
proper weld results in all cases.
Figure 5 Standard Gun Setup
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The gun is now ready to weld. Select the
proper setting for the size stud to be welded. Voltage
is determined by the weld base diameter. Be sure
your power source is set for the proper polarity:
straight for steel, reverse for galvanized.
11.2 INSTALLING OR CHANGING COLLETS
OR CHUCKS
( The terms collet or chuck are different names for
the same device). The collet holds the pin or stud to
be welded. It is secured to the gun shaft by two set
screws. These screws are loosened to remove or replace a collet. Tighten these screws snugly to secure
the collet in place.
When you change the size of the stud you are
welding, you must also change to the appropriate
collet. If a collet becomes damaged or broken, it
must be replaced. You may also need a stop.
11.3 GUN SET-UP FOR WELD PINS WITH
COLLET PROTECTOR (see Figure 6)
The collet protector has several advantages
over the standard set-up.
CD -2 1 2 GAP
1. It does not require a pin stop.
therefore, the same setup is applicable
for a range of pin lengths.
2. There is a fixed plunge, no gun
adjustments necessary.
3. It provides stability at the weld end
of the pin.
There are two standard sizes available: 12 ga.
And 10 ga. It is used with the round faceplate and
three blunt legs. The collet protector slides over the
collet and fastens to the chuck with three allen set
screws. The insert, which takes the place of the Interal stop, is replaceable.
The stud is pushed into the chuck until the flange bottoms out on the insert. The collet protector is not
available for studs larger than 10 ga.
The standard adjustable legs and footpiece
combination can alternately be used with the collet
protector as shown in Figure 10.
Figure 6 Collet Protector Gun Setup
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11.4 TEMPLATE ADAPTER (see Figure 7)
The template adapter is used when precise
location or positioning of the CD stud is required.
It is used with the round faceplate and does not require a footpiece or legs. The adapter is fastened to
the faceplate and provides a fixed distance between the collet and work. The plunge is set by using the correct stop in the collet. A template can
then be fabricated to enable very precise locating
of a particular stud.
CD -2 1 2 GAP
11.5 COLLET PROTECTOR/BLUNT LEG
(see Figure 8)
The round faceplate, with blunt legs, can alternately be used with the collet protector as shown in
Figure 8.
The template adapter is available in two
sizes, (1” and 1-1/4” diameter).
Figure 8 Collet Protector/Blunt Leg Setup
Figure 7 Template Adapter gun setup
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CD -2 1 2 GAP
GAP GUN
ITEM
PART #
QTY
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
F01358
M01797
F01377
M01375
F01376
F01372
M01329
F01368
F01369
F01370
F01366
F01367
F01381
M01328
M01325
F01383
F01382
M01532
M01386
3
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
6
21
F01371
1
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DESCRIPTION
GROUNDING FOOT
THREAD PIN M6X6
FOOT RING
UNION NUT
RUBBER BELLOW
FINDER SLEEVE
STRAIGHT PIN 3X8
WORKING PISTON
FEATHER KEY
RELEASE RING
PISTOL SHELL LHS
PISTOL SHELL RHS
TRIGGER HANDLE
STRAIGHT PIN 3X18
STRAIGHT PIN 3X30
PRESSURE SPRING
RELEASE ARM
STRAIGHT PIN 3X24
CHEESE
HEADSCREW M3X10
CLAMPING RING
ITEM
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
PART #
F01373
F01372
F01378
F01379
M01371
M01332
E02091
M01387
E02093
E02121
F01414/FA
M01087
M01085
E02082
E02035
E01963
F01413
M01337
F01412/FA
M02108
QTY
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
DESCRIPTION
PRESSURE SPRING
SPRING GUIDE
SET COLLAR
ADJUSTING SCREW
LOCKING RING
CHEESE HEADSCREW M2X10
MICROSWITCH
CABLE CLIP
PROTECTION SLEEVE
COMPLETE CONTROL CABLE
GROUND CORD
CHEESE HEADSCREW M4X10
CHEESE HEADSCREW M4X6
PROTECTION SLEEVE
GROUND CABLE 25MM
GROUND PLUG
STRAIN RELIEF
THREAD PIN M5X6
COMPLETE PISTOL CABLE**
THREAD PIN M8X8
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CD -2 1 2 GAP
Adjustment of stud welding gun
Adjustment of stud collet
1. Stud
2. Collet
3. Counternut
4. Stop Screw
For different stud diameters, different collets are required.
Adjust collet as follows:
* Loosen counternut (3)
* Insert stud (1) into collet.
The top edge of the stud flange must project for about .06 (1.5 mm) from the
front edge of the collet.
NOTE: The stud must make contact with the stop screw(4).
* Adjust stop screw (4) in the collet by turning it until the distance from
the top edge of the stud flange to the front edge of the collet equals
.06 inches (1.5 mm).
* Lock stop screw (4) by means of counternut (3).
* The following table indicates which tripod leg length is required.
Stud Length
0 – 1 3/8
1/2 – 1 7/8
1 – 2 3/8
2 – 3 3/8
Leg Length
2”(standard)
2 1/2”
3”
4”
Part #
F01358
F01359
F01360
F01361
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CD -2 1 2 GAP
Installation of stud collet into stud welding gun
The illustration below shows how to install the stud collet into the stud welding
1. Tripod leg
2. Collet
3. Sleeve nut
4. Bellow
5. Gun shaft
6. Stud flange
* Loosen sleeve nut (3) by means of a socket wrench.
* Insert collet (2) into gun shaft (5) until stop
* Tighten collet (2) with sleeve nut (3)
NOTE: The stud flange must project from the top of the tripod legs
for the thickness of the flange. If this is not the case, remove
collet and correct the projection by means of stop screw.
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CD -2 1 2 GAP
Adjustment of spring pressure
The pressure with which the stud is pressed against the workpiece during the
welding process is called spring pressure.
The following illustration shows how to adjust the spring pressure of stud
welding gun which is equipped with a spring pressure indicator.
1. Adjusting screw
2. Spring pressure indicator
The spring pressure is adjusted by means of the adjusting screw (1).
The adjusted pressure is indicated at the spring pressure scale (2).
Adjust spring pressure as follows:
* Turn adjusting screw (1) to the left until stop
Indicator position 1 = low pressure
* Turn adjusting screw (1) 3.5 turns to the right
Indicator position 2 = medium pressure
* Turn adjusting screw (1) to the right until stop
Indicator position 3 = high pressure
The spring pressure to be adjusted depends on the material of both welding
stud and workpiece.
Before starting the work, carry out some experimental weldings and test them
to find out the optimum adjustment.
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Figure 9 Light Duty CD Gun
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CD -2 1 2 GAP
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CD -2 1 2 GAP
11.6 PARTS LIST LIGHT DUTY CD HANDGUN
Part No. 300-0100
ITEM PART NO.
DESCRIPTION
QTY
1
033-384
GUN (CD) REAR CAP MOLDED
1
2
001-800
SPRING MAIN HEAVY SILVER
1
3
033-610
GUN (CD/DA) BEARING ASSEMBLY
1
4
033-799
GUN (CD) SHAFT TUBE
1
5
033-016
HEX HEAD CAP SCREW
3
6
033-382
GUN (CD/DA/FA) TRIGGER SPRING
1
7
049-955
M SCREW SET MS, BRASS PLT
2
8
NOT USED GUN (CD/DA/FA) CABLE CLAMP (ALUM. BLOCK)
1
9
033-404
TRIGGER SWITCH
1
10
033-381
GUN (CD/DA/FA) TRIGGER BUTTON MOLDED
1
11
036-496
GUN (FL) SHAFT BLOCK – A
1
12
033-662-25
GUN WELD CABLE (25 FT.)
1
13
033-658-25
GUN CONTROL CABLE (25 FT.)
1
14
033-881
GUN BODY RH & LH STD.CD MACHINED
1
15
033-445
GUN (CD/FL) SHAFT BOOT ASSY
1
16
033-447
GUN (CD) SHAFT BOOT RETAINING RING
1
17
033-665
GUN (CD) FACEPLATE – STD. ADJUSTABLE
1
18
033-446
GUN (CD) SHAFT BOOT SNAP RING
1
19
033-608
GUN (CD) WELD PIGTAIL ASSY
1
20
018-375
SCREW PAN HEAD
2
21
016-876
WASHED, LOCK INTO. TOOTH
1
22
033-757
LEG (CD) STD.ADJ. 7”
2 REF.
23
009-929
FLAT WASHER
2 REF.
24
016-378
SOCKET HEAD CAP SCREW
2 REF.
25
028-833
STD. FOOTPIECE
1 REF.
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CD -2 1 2 GAP
12.0 WELDABLE MATERIAL COMBINATIONS
BASE MATERIAL
STUD MATERIALS
Mild Steel (1008-1018)
Mild Steel 1008, 1018
Stainless Steel 304, 305
Brass 65-35, 70-30
Copper, Silicon/Bronze
Galvanized Sheet (duct-”Q” Decking
Mild Steel 1008-1018
Stainless Steel 304,305
Structural Steel (Must Be Clean)
Mild Steel 1008,1018
Stainless Steel 304,305
Brass 65-35, 70-30
Aluminum – Most alloys of the
1100, 3000 and 5000 series.
Aluminum 1100,5356
Zinc Alloys (Die Cast)
Aluminum 1100, 5356
Medium Carbon Steel (1030-1018)
Mild Steel 1008, 1018
Stainless Steel 304,305
Brass 65-35, 70-30
Lead Free Brass
Lead Free Rolled Brass
Electrolytic Copper
Mild Steel 1008, 1018
Stainless Steel 304, 305
Copper, Silicon/Bronze
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WEL D
CD -2 1 2 GAP
13.0 CAUSE OF POOR OR ERRATIC
WELDS
12. Incorrect spring. (REPLACE WITH PROPER
SPRING)
1. Loose collet. Does not grip stud tightly.
(REPLACE) Not enough engagement of stud to collet. (CHANGE STOP)
13. Poor stud quality.
2. Fault or loose ground connection. (REPAIR OR
TIGHTEN)
14.0 TROUBLE SHOOTING POOR
WELDS
3. Poor surface condition of base material, excessive
oil, grease, rust, ect. (CLEAN)
4. Voltage or capacitance setting too low or too high.
(ADJUST TO DIAMETER OF STUD)
5. Broken or loose cables. (REPAIR)
6. Dirt in gun. (CLEAN)
7. Incorrect polarity. (CABLES HOOKED-UP
WRONG)
8. Use of center punch or deep scribe. (DO NOT
USE CENTER PUNCH OR DEEP SCRIBES)
Figure 10 Weld too Hot
Weld too Hot
A) Decrease voltage.
B) Decrease capacitance.
C) Increase stud protrusion.
D) Increase spring pressure.
9. Cables too closely coiled.
10. Arc blow is evidenced by “one side” welds. In
severe cases there will be no melting under one edge
of flange while the opposite side is gouged out or
appears excessively hot. The principle cause of arc
blow is magnetic field induced by the current flow
during the weld. It occurs most often on long, narrow strips of metal or near edges of sheets or plates.
In some cases, a change in grounding positions, or
two grounds on the work piece, one at each end or
edge of work, will correct the problem. For assistance in severe cases, contact your local sales representative.
11. Incorrect plunge setting. (ADJUST TO PROPER
SETTING)
Figure 11 Weld too Cold
Weld too Cold
A) Increase voltage.
B) Increase capacitance.
C) Decrease stud protrusion.
D) Decrease spring pressure.
Page 17
PRO
WEL D
CD -2 1 2 GAP
15.0 ROUTINE WELDER
MAINTENANCE
Your CD-212 is designed for long service
with minimum care. Ordinary common sense maintenance will keep it operating efficiently.
Figure 12 Arc Blow
Arc Blow
A) Use double grounds.
B) Ground too close or not spaced
Figure 13 Weld without footpiece
1. Treat the welding, ground, and control cables with respect. Avoid sharp bends and kinks which
may break the cables. Don’t use the cables as a “tow
line” to move the control. Avoid damage or straining
the cables where they enter the gun or at the connectors.
2. It is good practice to occasionally remove
the cover of the controller and clean with air and a
soft brush around the components.
CAUTION
Be sure the controller is disconnected
from the power before removing the protective cover.
Weld without footpiece
A) Use standard footpiece.
B) Use template adapter.
C) Use tripod blunt legs.
3. While the cover is removed, tighten all the
weld cable connections and make sure all the screws
on the capacitor terminals are torque to 30 inchpounds.
NOTE:
Keep the gun free of
dust, dirt or foreign
material
Figure 14 Good Weld
Page 18
PRO
WEL D
CD -2 1 2 GAP
16.0 ASSEMBLY CD-212 CONTROLLER (see Figure 15,16, & 17)
13
12
11
10
9
8
13a
7
1
6
2
3
4
5
Figure 15 Parts List
ITEM
1
2
3
4
5
6
7
8
9
10
11
12
13
13a
DESCRIPTION
Chassis
SCR Mounting
Main SCR
Capacitor (3)
Transformer
PC Board
Discharge Resistor
Safety Discharge SCR
Charging SCR
Buss Bar
Diode
Charging Bridge
Buss Bar
150K 2 Watt
PART NUMBER
101-0025
124-0026
108-0001
106-0023
105-0017
600-0013
112-0041
108-0042
108-0002
124-0034
108-0027
108-0017
124-0035
111-0002
Page 19
PRO
WEL D
CD -2 1 2 GAP
18
14
17
16
15
Figure 16 Parts List (continued)
ITEM
14
15
16
17
18
Page 20
DESCRIPTION
Knob
Female Camlok (2)
2-Pole Female Hubbell
Power Switch
Circuit Breaker
PART NUMBER
102-0060
107-0002
107-0031
104-0013
104-0020
PRO
WEL D
CD -2 1 2 GAP
V4
R23
C6
R20
+
V5
R17
D6
R16
V3
R18
R12
D1
OP2
OP1
+ C8
R26
R24
D9
C3
R9
V2
R4
D2
OP3
R25
R5
+
D4
R22
V1
C1
C5
D5
R14
R21
ZD2
C7
D7
+
R7
R8
R15
V6
R11
C2
C4 +
R6
ZD1
R10
R13
16.1 PC BOARD ASSEMBLY DRAWING
FU1 and FU2 are 3AG 1 ampere fuses
R19
D8
D10
D11
R3
D3
R2
D12
D13
R1
F1
F2
Figure 17 PC Board
Page 21
PRO
WEL D
CD -2 1 2 GAP
17.0 TROUBLE SHOOTING – ELECTRICAL
When troubleshooting the power unit/controller (welder), the following precautions must be observed:
1. Welder must be TURNED OFF!
2. Unplug power cable from welder and wait at least two minutes before checking components.
3. The use of a volt/ohmmeter is recommended where any voltage may be present.
4. Use a continuity tester ( or troubleshooting light) for continuity checks only.
5. Possible causes marked with a star (*) are generally the most common problems.
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
1. Welder does not turn on
and will not weld.
A. Power connections at
Welder or 110 VAC outlet
not complete.
Check connections.
*B. Broken power cable or
loose wire connection in
the plug.
Check wires for continuity.
Repair break.
C. Fuse blown.
Replace fuse.
*A. Shorted weld capacitor.
Check safety vent seal for
Rupture hole. Replace
defective capacitor.
B. Shorted rectifier (BR1)
Check for a short across the
rectifier with ohmmeter.
Replace rectifier module if
shorted.
C. Incorrect primary hookup.
Check transformer connections.
D. Shorted transformer
assembly.
Replace transformer.
2. Fuse blows each time
unit is turned on.
Page 22
PRO
WEL D
CD -2 1 2 GAP
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
3. Welder turns on but
does not operate
A. Ground cable connections
not complete.
Check for continuity
*B. Broken gun control cable
or loose wire connection
in the plug. Shorted or
open trigger switch.
Check continuity between
pins on control plug while
trigger is depressed.
Should read continuity.
*C. Faulty printed circuit
board.
Replace with new PC
Board.
D. Shorted weld SCR.
Check with ohmmeter
(should not show continuity
in either direction). Replace
rectifier module if shorted.
A. Shorted charge SCR.
Check with ohmmeter
( should not show continuity
In either direction). Replace
if shorted.
*B. Faulty printed circuit
board.
Replace with new PC
Board.
C. Open voltage
potentiometer.
Replace defective voltage
Potentiometer.
A. Improper gun setup.
Check applicable gun setup
Instruction page.
B. Improper grounding or
cable setup or incorrect
polarity.
Check applicable cable setup
Instruction page.
C. Weld cables are coiled.
Straighten out cables.
D. Incorrect voltage setting.
Adjust as necessary.
E. Studs or pins not
perpendicular to work
surface.
Adjust legs as necessary.
Replace defective legs.
4. Weld is excessively hot
regardless of voltage
setting.
5. Poor and erratic
welding.
Page 23
PRO
WEL D
CD -2 1 2 GAP
18.0 CHECK LIST CD-212 SYSTEM PT. NO. 100-0112
STANDARD CD-212 WELDING SYSTEM COMPLETE WITH B-COLLET GUN
AND 25’ #4 GROUND CABLE
ITEM
1.
2.
3.
4.
5.
DESCRIPTION
PART #
QTY
CD-212 CONTROLLER 110 VAC
GUN ASSY. B-COLLET w/INTEGRAL 25 FT.WELD
& CONTROL CABLE 2-LEGS, and FOOTPIECE
GROUND CABLE #4 X 15’
MANUAL, Operation and Maintenance CD-212
HEX WRENCH SET
200-0015
1
300-0100
125-0100
1
1
1
1
19.0 CHECK LIST CD-212 SYSTEM PT. NO. 100-0113
STANDARD CD-212 WELDING SYSTEM COMPLETE WITH TAPER TIP GUN
AND 25’ #4 GROUND CABLE
ITEM
1.
2.
3.
4.
5.
Page 24
DESCRIPTION
PART #
CD-212 CONTROLLER 110 VAC
200-0015
GUN ASSY. TAPER TIP w/INTEGRAL 25 FT.WELD
& CONTROL CABLE 2-LEGS, and FOOTPIECE 300-0101
GROUND CABLE #4 X 15’
125-0100
MANUAL, Operation and Maintenance CD-212
HEX WRENCH SET
QTY
1
1
1
1
1
MANUFACTURED BY
PRO
WELD
MADE IN THE U.S.A.