Operation Manual

POW462 EN
Copyright © 2015 VARO P a g e | 6 www.varo.com
 Remark: always make sure you connect the earth clamp to proper earth. In case you
don’t, severe damage may occur to main grounding or machine itself (melting of ground
wire).
 Mains socket must be secured with proper (automatic) fuses. (According to section of
wire, a standard socket with earth should have a 16A fuse) Using higher fuses may result
in burning of the wires and result in fire in the building.
6.2 Small and moist rooms.
When you use your welder in small or moist rooms you have to use extra insulation layers,
use high quality insulating gloves, leather or other very bad conducting material, to protect
your body. In extreme situation the output voltage may not be higher than 48V.
6.3 Protective gear
 While performing work, the entire body of the welder must be protected with clothing and
facial protection gear against radiation (burns).
 Welding gloves made of a suitable material (leather) must be worn on both hands. These
must be in perfect condition.
 In order to protect clothing/skin from flying sparks and burns, appropriate aprons must be
worn. If the nature of the work, e.g. overhand welding, requires it, a protective suit as well
as a safety helmet must be worn.
6.4 Protection against radiation and burns through :
 signs placed in the workplace warning about danger to eyes: a sign reading “Caution, do
not look into flames!” The workplace must be closed off as completely as possible so that
people in the vicinity are sufficiently protected. Unauthorized people must be kept away
from the welding area.
 the walls in the immediate vicinity of permanent welding areas should not have a light
colour or glossy finish, windows must be treated up to at least eye-level to protect against
light transfer or reflection, e.g. by applying a suitable layer of paint.
7 OPERATION
7.1 Preparation.
The earth clamp (2) must be connected to the work piece or to the ground the work piece is
standing on.
Caution :
 make sure there is direct contact with the work piece. Avoid painted or insulated surfaces.
 The welding cable is provided with a special clamp to hold the electrode.
 Always wear the protective cap, it protects you and allows looking at the weld.
7.2 Welding.
After making all proper connections you can proceed as follows:
 put the bare end of the welding electrode in the clamp (1) and connect the earth clamp (2)
to the work piece.
 Switch the welder on (4) and choose the welding current by turning the hand wheel (3),
depending on electrode Ø you will use.
 Hold the protective cap before your face and wrap the electrode over the work piece, like
lighting a match. This is the best way to light the bow. Test on a trial piece first to check
wither you have selected proper electrode/current.
Electrode Ø (mm)
Welding current. (A)
2.5
70 – 100
3.2
100 – 130
4.0
130 - 160