Miller Electric S-21E - Manual (Page 7)

SECTION 3- SPECIFICATIONS
Table 3-1. Specifications
Input Power
Requirements
Electrode Wire
Diameter Capacity
Wire Spool
Capacity
Electrode Wire
Feed Speed
Weight
Net Ship
10 to 20 lb.
24 VAC
3.5 Amps
50/60 Hz
.O23thru .045 in.
(0.6 thru 1.1 mm)
(4.5 to 9 kg)
8 in. (203mm) spools
up to 60 lb.
(27.2 kg)_coils
75-600 ipm
(1.9-15.2 mom)
at 24 VA~
30 lbs.
(13.6 kg)
33 lbs.
(15 kg)
SB-124 467
Figure 3-1. Overall Dimensions
3-1. DESCRIPTION
This unit is a semiautomatic constant speed wire feeder
which operates on 24 volts ac. The feeder is designed
for connection to a constant voltage (CV) type power
source through a 14-pin connector. If 115 volts ac is the
only power available for use with the feeder, the optional
power supply adapter Model PSA-2 115/24 should be
used to convert the power to 24 volts ac.
The case can be tightly latched to help keep out dust and
dirt.
SECTION 4- INSTALLATION OR RELOCATION
4-1. LOCATION (Figure 3-1)
The service life and efficiency of this unit and associated
components are reduced when they are subjected to
high levels of dust, dirt, moisture, corrosive vapors, and
extreme heat.
A proper installation site should be selected for the wire
feeder if the unit is to provide dependable service. Lead
lengths must be considered when installing the unit. A
slot is provided in the base of the unit to fit over the lifting
eye on welding power sources so equipped. Suitable
space should be maintained around the unit for making
necessary connections and for maintenance functions.
4-2. DRIVE ROLL INSTALLATION (Figure 4-1)
A
WARNING: ELECTRIC SHOCK can kill.
• Do not touch live electricalparts.
• Shut down wire feeder and welding power
source, and disconnect input power employ-
ing lockout/tagging procedures before in-
specting or installing.
Lockout/tagging procedures for wire feedercon-
sist of disconnecting interconnecting cord, and
for welding power source consist of padlocking
line disconnect switch in open position, remov-
ing fuses from fuse box, or shutting off and red-
tagging circuit breaker or other disconnecting
device. Stop engine, and disconnect negative
(—) battery cable from battery on welding gen-
erators. TM-1571 Page 3
10-112 In.
(267 mm)
22-1(2 in.
(572 mm)
S-21E