KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen E-Mail: info@kern-sohn.com Phone: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com Safety-usage manual KERN OEX Version 1.
GB KERN OEX Version 1.0 06/2014 Safety usage manual Contents 1 2 3 4 5 6 7 8 2 General understanding of the manual symbology .......................................... 3 Intended use of scales OEX .............................................................................. 3 Construction of single load cell scales OEX ................................................... 4 Warnings and security information ..................................................................
1 General understanding of the manual symbology Observing prescriptions of this manual is a crucial precaution concerning safe operation in explosive atmospheres as far as OEX scales are concerned.
3 Construction of single load cell scales OEX Single load cell scales series OEX feature modular construction comprising: Indicator KEX-TM Power adapter IEX-A01 manufactured by KERN, located outside the explosive zone Load cell in Ex version Weighing platform - non-electric scale’s mechanical component. Indicator series KEX-TM is plugged with a cable to a force measuring sensor (a load cell) installed in a stainless steel weighing platform.
Models with pole: Scale model OEX 6K-3HM OEX 10K-3HM OEX 30K-2HM OEX 60K-2HM OEX 100K-1HM A1 306 306 410 500 500 A2 246 246 410 500 500 B 103±3 103±3 98±2 150±5 150±5 C1 268 268 370 400 400 C2 208 208 370 400 400 D ~535 ~535 ~617 ~790 ~790 E ~485 ~485 ~613 ~710 ~710 Scales series OEX- dimensions Models without pole: Scale model OEX 6K-3M OEX 10K-3M OEX 30K-2M OEX 60K-2M OEX 100K-1M A1 306 306 410 500 500 A2 246 246 410 500 500 B 103±3 103±3 98±2 150±5 150±5 C1 268 268 370 400 400 C2 208 208
4 Warnings and security information Scales series OEX comply with requirements of group II, category 2 of instruments covered by Directive 94/9/EC and they are marked as II 2 G IIC T4. Symbols explanations in accordance with Directive 94/9/EC: Scales series OEX are intended to operate in- and outdoor, however, they should not be treated with aggressive chemical vapours, critical temperatures, and high humidity. The weighing platform utilize stainless steel basis.
Ambient temperature during operation: -10°C to +40°C. Scales cannot be exposed to mechanical shocks or vibrations. IEX scales can be installed and used only by a skilled, trained personnel. Scales should undergo periodical technical surveys . Gathering electrostatic charge should be avoided. Grounding wire (equipotential) needs to be always connected to the grounding terminal in KEX-TM indicator. Disconnecting of the grounding wire is forbidden.
5 Installation instruction of scale For OEX scales prepare an appropriate place for installation. It should be dry, even and rigid Acceptable operation temperature range -10°C to +40°C The ground on which the platform is to be placed must be able to carry the maximal load together with the platform Scales series OEX without pole featuring an indicator installed on a cable, enable installing the indicator on a table or fitting it to a wall using a holder.
Weighing pan Transport protections CAUTION! In order to dissipate static electricity, it is necessary to ground the scale’s indicator. Places for plugging the wires are marked with “ ” symbol. Before moving the scale to its intended place of use, prepare a conductor for electrostatic grounding of the indicator. The grounding conductor should be ended with a loop that is screwed to the indicator using M4 nut.
CAUTION! Installing of the indicator, placing the weighing platform and connecting grounding must be carried out at a time when there is no risk of the emergence of an explosive atmosphere. 10 Place the weighing platform on an even and stable foundation distant from source of heat, drafts and leveled. Level the scale using adjustable feet and a level. Check whether the adjustable feet rest on the scale’s foundation. Each adjustable feet should take an equal amount of load.
1. 2. 3. 4. 5. Power socket Power adaptor connector Grounding lamp Load cell conductor Data plate of power connector Before the first start up, make sure, there is no explosion danger – there is no explosive atmosphere. If there is any sign that the scale is not working properly, unplug it from mains, secure it and notify KERN service. Connect the supplier to mains 230V AC. In case of prolonged not using of the scale – unplug it from mains.
6 Changing the scale place of operation While moving a scale in another place of operation, all safety measures listed in point 5 of this instruction should be taken. 7 Cleaning and maintenance Unplug the power adapter IEX-A01 from mains. Check wether the indicator´s electrostatic grounding is correctly plugged and is not defected. Clean the scale and the housing with a slightly moistened cloth. You can use typical domestic cleaning agents.
