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2.3 Securing the Fitting and the Joint
Use positioner clamps or a vice to secure the fitting and
the joint to be made before welding. The fitting manufac-
turer's installation instructions, local and national regula-
tions have to be respected in all cases.
A welding process must never be repeated with the same
fitting, since this may cause parts under power to be ac-
cessible to the touch.
2.4 Cleaning the Product
The product must not be sprayed with or immersed in
water.
2.5 Opening the Unit
The cover of the product may be removed only by
specialized staff of the manufacturer or of a service
shop properly trained and approved by it.
Caution
2.6 Extension Cables on the Worksite
To extend power cord length, use exclusively properly ap-
proved extension cables that are labeled as such and have
the following conductor sections:
up to 20 m:
1.5 mm² (2.5 mm² recommended);
Type H07RN-F
over 20 m:
2.5 mm² (4.0 mm² recommended);
Type H07RN-F
When using the extension cable, it has always to
be rolled off completely and lie fully extended.
Caution
2.7 Checking the Product for Damage
Before every use of the product, check safety features
and possibly existing parts with minor damage for proper
function. Make sure that the push-on connection terminals
work properly, that contact is fully established, and that
the contact surfaces are clean. All parts have to be installed
correctly and properly conform to all conditions in order
for the product to function as intended. Damaged safety
features or functional parts should be properly repaired
or replaced by an approved service shop.
2.8 Data Interface Cover Cap
The dust cap for the interface has to cover the port during
operation, in order to keep humidity and contaminations
away.
6
EN
HÜRNER HCU 300 User's Manual
H Ü R N E R S c h w e i s s t e c h n i k G m b H
Nieder-Ohmener Str. 26
35325 Mücke, Germany
Version March 2016
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