Miller Electric Millermatic 155 And M-15 Gun User manual

OWNER’S
MANUAL
June 1996 Form: OM-1314
Effective With Serial No. KG171523
cover_om 4/95 −ST-800 091-C PRINTED IN USA
©1996 MILLER Electric Mfg. Co.
Millermatic®155 And M-15 Gun
230 Volt Wire Welder
Rated Welding
Output Amperage
Range
Maximum
Open-Circuit
Voltage DC
Amperes Input at
Rated Load Out-
put 115 V, 60 Hz,
Single-Phase
KVA KW Weight Overall
Dimensions
130 A @ 20.5 Volts
DC, 30% Duty Cycle 40 −170 33 20.5
(0.27)*
4.7
(.05)*
4
(.04)* 80 lb
(36.3 kg)
Length: 17 in
(432 mm)
Width: 10 in
(254 mm)
Height: 15-1/2 in
(394 mm)
Wire Type
And Dia
Solid/
Stainless Flux Cored/ Aluminum Calculated Wire Speed Range At
No Load Max Wire Feed Speed While Welding
And Dia
.023 −.035 in
(0.6 −0.9 mm) .030 −.045 in (0.8 −1.1 mm) 126 −722 IPM (3.2 −18.3 m/min) 500 IPM (12.7 m/min)
* While idling

OM-1314 Page 5
SECTION 1 −INSTALLATION
1-1. Installing Work Clamp
1 Insulator
2 Bolt
3 Smaller Hole
4 Work Clamp Tabs
Bend tabs around work cable.
5 Work Cable From Unit
6 Nut
Ref. ST-025 190-D
1
2
3
4
5
6
3/8, 7/16 in
Tools Needed:
1-2. Installing Welding Gun And Setting Gun Polarity For Wire Type
1 Gun Opening
2 Gun Trigger Receptacle
3 Gun Securing Nut
4 Drive Assembly
5 Gun End
Loosen securing nut. Insert gun
end through opening until it bottoms
against drive assembly. Tighten
nut.
6 Gun Trigger Plug
Insert plug into receptacle, and
tighten threaded collar.
Close door.
1
2
3
4
56
ST-149 328-B / Ref. ST-159 270
5/16 in
Front Panel Openings
Straight Polarity
DCEN Reverse Polarity DCEP
Flux Cored Wires
(FCAW−Without Gas)
Solid Steel Or
Aluminum Wires
(GMAW−With Gas)
.Follow wire manufacturer’s recommendation.
Tools Needed:

OM-1314 Page 6
1-3. Electrical Service Guide
Input Voltage 230
Input Amperes At Rated Output 20.5
Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes 25
Min Input Conductor Size In AWG/Kcmil 14
Max Recommended Input Conductor Length In Feet (Meters) 64 (19)
Min Grounding Conductor Size In AWG/Kcmil 14
Reference: 1996 National Electrical Code (NEC) S-0092-J
1-4. Selecting A Location And Connecting Input Power
1 Rating Label
Supply correct input power.
2 Plug
3 Receptacle
Connect plug to receptacle.
4 Line Disconnect Device
See Section 1-3.
YSpecial installation may be
required where gasoline or
volatile liquids are present −
see NEC Article 511 or CEC
Section 20.
ssb2.2* 1/94 −ST-801 504
1
18 in (457 mm) of
space for airflow
L1
L2
L1
L2
2
230 VAC, 1
YAlways connect
grounding
conductor first.
= GND/PE
4
3
YDo not move or operate unit
where it could tip.

OM-1314 Page 7
1-5. Installing Wire Spool And Adjusting Hub Tension
S-0499
15/16 in
Standard Wire Spool 1 Lb Wire Spool
When a slight force is needed
to turn spool, tension is set.
Tools Needed: