1 Introduction
Dear User,
with the KÖCO KST 108 or KST stud welding system you have purchased an appliance of superior quality. It
has been constructed to latest technological standards and complies with all technical requirements and
regula-tions in force at the time of delivery. To ensure trouble-free operation at all times, we recommend that
you follow the instructions hereunder:
• Before start-up, carefully read through the complete manual and make sure that anyone on your staff
han-dling or operating the appliance has also read and understood the instructions.
• The safety instructions must be followed at all times.
• Store this manual in a safe place with easy access for anyone operating the appliance.
• Secure the appliance against use by unauthorized persons.
• The appliance may only be operated by sufficiently qualified and trained personnel.
• Have a trained electrician inspect the mains connection for correct fusing and earthing.
• If any malfunctions occur which you cannot remedy yourself, call our after-sales service.
• In case of accidents, call for medical help and, if necessary, notify accident insurers and/or local trade
su-pervision authorities.
1.1 Information for the User
This manual for your KÖCO KST 108 or KST 110 stud welding system and KÖCO ESP 1 K and ESP 1 S stud
welding guns contains all necessary information about the equipment, safety instructions for stud welding
opera-tions, and assessment of welds. All information supplied is given to the best of our knowledge, but
without ac-cepting any liability on our part. In particular, we cannot accept any responsibility for welding
suitability of mate-rials, nor for the suitability of the stud welding process for certain applications. In all of these
cases, responsibil-ity for welding results rests with the user.
We shall be glad to assist you with any questions you may have concerning particular applications or remedies
for malfunctions. Any suggestions on your part towards improving this operating manual will also be welcome.
1.2 Safety Instructions
KÖCO KST 108 and KST 110 stud welding appliance and KÖCO ESP 1 K / ESP 1 S welding guns are de-
signed exclusively for capacitor discharge stud welding with tip ignition. They must not be used for any other
purpose. In particular, welding under water is strictly prohibited, and using the equipment to thaw up frozen
wa-ter pipes is not permissible under any circumstances.
1.1.1 Personal Safety
KÖCO KST 108 and KST 110 stud welding appliance and KÖCO ESP 1 K / ESP 1 S welding guns are ap-proved
for welding under increased electrically hazardous conditions according to EN 60974-1. However, for his own
safety, the operator must wear appropriate protective clothing during welding, which includes the following:
• Dry, insulating shoes
• Close-fitting, dry and non-flammable (free of inflammable materials) working clothes (leather apron)
• Leather gloves
• Safety goggles with an adequate degree of protection
• A helmet protecting the head and the neck for use during overhead welding
Issue 4/2019 ver. 2.0 page 5 of 42
Köster & Co. GmbH • D-58256 Ennepetal • Spreeler Weg 32 • Tel. +49 2333 8306-0 • Fax +49 2333 8306-38
Internet: http://www.koeco.net • E-Mail: koeco@koeco.net
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