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Pro Spot PR-8
GB/US/2000-08 PRO SPOT
D5. Welding gun with single electrode (Operating Mode 4).
The use of a microprocessor in the BOSS+V4 means that the operator needs only set the
required value of the current before starting to use the equipment. However, some basic
welding rules need to be followed if best use is to be made of the machine:
- Do not weld on the body sheet to which the earth connection is made. (See section D4 on
the earth connection.)
- When performing spot welding, start with the spot furthest away from the earth
connection and work towards the earth connection.
- Make sure that the two body plates to be welded are in good metallic contact with each
other.
- Press the electrode against the body sheet by hand pressure. Note: Insufficient hand
pressure and too high a welding current can burn a hole in the metal and damage the
electrode. Make sure that you are using the correct combination of pressure and current.
- Wait for about a second after conclusion of welding before removing the gun, to allow time
for the weld to fuse.
- Reposition the welding gun and repeat the operation.
- Clean and sharpen the electrode tip carefully, particularly if poor contact has caused the
metal to stick to the tip of the electrode. (Probably due to excessive current and/or too low
hand pressure.)
- Let the machine and welding cables cool down if they overheat and/or if an overheating
alarm is generated.
Tong (Operating Mode 5-6).
The starting time of the welding cycle, a half second squeeze sequence, gives the possibility
to stop the cycle if bad positioning.
Important! Risk of damage to materials close to the weld,
e.g. glass or textiles.
Warning! All electrical work on the power unit (connection,
service and installation) must be performed only by autho-
rized personnel. Disconnect the supply before performing
any service or installation work.
D. Operation
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