This symbol indicates advice which, if ignored, puts your health or
the ability of the device or devices to function at risk.
Note:
This symbol indicates important additional information, tips and
recommendations.
1.2. SAFETY INSTRUCTIONS
The most important safety instructions are summarised in this chapter. It is
intended to supplement the relevant regulations which must be studied by the
personnel responsible.
When working in hazardous areas, the safety of personnel and plant depends
on complying with all relevant safety regulations. Assembly and maintenance
staff working on installations therefore have a particular responsibility. They
require precise knowledge of the applicable standards and regulations.
As user, please observe:
National safety and accident prevention regulations.
National installation regulations (e.g. EN 60079-14)
Generally recognised technical regulations.
Safety guidelines and information in these operating
instructions as well as the enclosed mechanical assembly
drawings, wiring diagrams and operating instructions of the
subassembly devices.
Characteristic values and rated operating conditions on the
rating and data plates.
Additional instruction plates / labels on the devices.
That any damage can invalidate the Ex-protection.
Use the devices in accordance with the regulations and for their intended
purpose.
Incorrect and impermissible use or non-compliance with these instructions
invalidates our warranty provision. No changes to the devices and
components impairing their explosion protection are permitted.
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Wrong way of lifting the load
Correct way of lifting the load
1.3. CONFORMITY TO STANDARDS
The devices comply with the following standards and directives:
Directive 94/9/EG;
EN 60079-0, EN 60079-11, EN 1755
The devices are approved for use in hazardous area Zones 1, 2, 21,
22.
1.4. TAKING THE SYSTEM INTO OPERATION
To activate the weighing system, turn it on using the on/off () button on the
terminal.
After 3 to 5 minutes the electronics and load cells have reached the operational
temperature. Before this, inaccuracies of up to ca. 0.3% may occur.
It is recommended not to lift loads before the zero-point correction has been
executed.
The weight must be lifted freely: without touching the housing of the indicator or other
pallets:
The accuracy of the weighing system diminishes with circa 0.1% per degree starting
from a tilted position of 2°. This effect also occurs with pits/pot-holes in the floor. An
even floor is optimal.
The most accurate weighing result is obtained when the centre of gravity of the load
is placed between the forks. With an non-centric loading, the forks will tordate and
bend. This may result in a higher inaccuracy.
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Non-optimal placement of the load
Optimal placement of the load
Indicator status
meaning
above continuous red
Storage battery charged approx. 10%
Residual operating life approx. 3-5 h.
above slow flashing, red
Storage battery charged approx. 5%
Residual operating life approx. 1 h.
above rapid flashing, red
Storage battery charged less than 5%
Storage battery must be charged immediatly.
Temperature range: between -10 and +40° C the maximum inaccuracy is 0.1% of the
weighed load. Outside this range, inaccuracies of up to 0.3% may occur.
Fast temperature changes must be avoided because it will cause condensation in the
electronics. During acclimatisation the weighing system must be switched off.
- Because the steering wheels are mounted in the front, pulling of the pallet truck is
preferred above pushing it.
- When the lifting mechanism is not used, the handle should be kept in the neutral,
middle, position. This prolongs the life span of the sealings.
1.5. INFORMATION ON STORAGE BATTERY OPERATION
EXPLOSION HAZARD!
Always charge the battery pack in a safe area!
Only use chargers approved by METTLER TOLEDO!
The indicator indicates the storage battery state.
The (residual) operating life during storage battery operation depends on the
operating mode.
The following operating life applies for fully charged new storage battery:
Sleep mode min. 70 h.
Normal weight display min. 60 h.
Normal weight display and interface operation min. 50 h.
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When the battery indication is not lid the battery is OK. When the battery triangle is
red, the battery should be charged. When the battery is completely empty, the
weighing system switches off.
When charging, it is necessary to charge the battery for at least 8 hours. This will
prevent loss of battery capacity. If you use the system in shift work, the autonomy of
70 hours should be sufficient.
The battery can be charged on the adapter supplied with the charger.
Charging cycle: Fast charging until full (about 6.5 hours), next trickle charging.
It is not possible to overload the battery because the charger automatically switches
over to trickle charge 11 hours after the charging process has started.
Note
Depending on the age and the charging state of the storage battery, the operation life
may vary downwards.
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Open the door
Take out the battery by turning the connector counterclockwise and pulling it down.
Lift up the battery pack slightly before taking it out.
1.6. Battery change.
For replacing the battery reverse this working order.
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2.1. MAINTENANCE AND SERVICING
Please pay attention to the national regulations applicable in the
country of deployment!
Maintenance, repair and servicing work on the devices must only
be performed by personnel who are both authorised and suitably
trained for this purpose.
To prevent defects in the system, perform maintenance work
regularly. The intervals between inspections should however not
exceed a maximum of three years.
Maintenance and calibration may only be executed in a safe area.
2.2. MAINTENANCE PALLET TRUCK
The maintenance guidelines for normal pallet trucks apply to the chassis of the
mobile weighing system. From experience we know that the integrated weighing
system still functions when the chassis is damaged by overloading.
Main guidelines:
- The weighing system meets up to the protection class IP65. This means that dust
or moisture (rain or water beam from all sides), will not influence the operation of
the electronics. However, high-pressure cleansing in combination with warm water
or chemical cleansers will lead to the entry of moisture and therefore negatively
influence the operation of the system.
- Only specialists may undertake any welding. This is to avoid damage to
electronics and load cells.
- The bearings of the wheels (non-polyurethane) and the pivoting points of the
levelling bar of the loading wheels must be cleansed and greased regularly.
- For maintenance of the weighing terminal see the MT operating instructions.
2.3. INSPECTION INTERVALS
Consider the following conditions when determining the inspection interval:
• The ambient conditions:
- Set-up in the open
- Degree of wind, rain and sunlight exposure
• The operating conditions:
- Duty cycle of the system
- Operator errors
• Manufacturer information in the technical documentation:
- Mechanical and electrical service life
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Date: Name:YesNo Action performed
Date last inspection:
Are the wires in the terminal blocks clamped properly?
Are the permissible temperature specifications (in accordance with EN 60079-
0) complied with?
Are seals, cable glands and cable entries free of damage?
Are the enclosures free of ruptures, holes, bumps, material brittleness or
corrosion spots?
Are the threaded joints tightened properly?
Is the sealing within the threaded joint in satisfactory condition?
Are the windows intact? a)
Are the interior spaces of the devices in flawless condition?
Are the electrical points of contact in flawless condition?
Is the machanical attachment of the battery intact?
Do the electrical contact points make contact properly?
Is the device within the tolerances as stated by the manufacturer?
Recommended interval: once a year
Is the device still within the electrical or mechanical service life as specified by
the manufacturer?
Is the device intact?
Has the device been checked that no extraneous particles are present within?
Is the battery connection performed correctly?
Do cable entries and stopping plugs sit correctly?
Are all unused openings sealed with certified sealing elements?
General inspections
Inspecting the condition of cable glands
Inspecting the condition of windows:
Inspection of the interiors
Inspecting the device prior to operating
Inspecting the outer condition of enclosures
Calibration:
Inspection of the age and condition
2.4. INSPECTION CONTENT
Perform the inspections as determined by the local requirements. The
inspections include visual examinations, general checks and detailed
inspections.
If defects which affect explosion protection are discovered during
inspections, then the equipment is to be taken out of service until
the defect is remedied.
2.5. INSPECTIONS/MAINTENANCE CHECKLIST
Table 2-6
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RWS-Ex, BTA226x
Explosion protection, device group and category
II 2 G
II 2 D
Test certification
DEKRA 13 ATEX 0044
Type of explosion protection to EN 60079-0
Ex ib IIC T4 Gb
Ex ib IIIC T135°C Db
3.1. FUNCTIONALITY OF THE WEIGHING TERMINAL
For details on touch panel and functions of the weighing terminal please refer to the
METTLER TOLEDO IND226x operation manual
4.1. TECHNICAL DATA
Please consult the manufacturer if operating conditions are nonstandard.
Additional technical data can be obtained upon request.
4.2. EX PROTECTION
Table 2-8: Ex protection data
4.3. ACCESSORIES AND SPARE PARTS
Use only original accessories and spare parts from Mettler Toledo
or RAVAS Europe b.v.. Use of another company’s accessories
and spare parts invalidates the warranty of Mettler Toledo/ RAVAS
Europe b.v..
We would like to inform you about the fact that this RAVAS product is 100 % recyclable on the basis
that the parts are processed and disposed off in the right manner.
More information can be found on our website www.ravas.com.
Rev.20150616
Printing/typographical errors and model changes reserved
AU Mettler-Toledo Ltd Port Melbourne, Victoria 3207, Tel. (03) 9646 4551, Fax (03) 9645
3935
BE N.V. Mettler-Toledo S.A., B-1651 Lot, Tel (02) 334 02 11, Fax (02) 378 16 65
BR Mettler-Toledo Indústria e Comércio Ltda. São Paulo, CEP 06465-130, Tel (11) 421