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Assembling Position: Vertical
Hints for Assembly: Must be free of tension. Vibration must be avoided.
Commissioning: Reading point : conical float : top edge spherical float : top end
Maintenance: If the float does not move freely in the flow or if pollution can be seen in the glas measuring tube the tube must be cleaned. To clean the measuring tube, remove it from the fitting. First remove the protective cap, then unfasten the screws (13, RAGL) and take the measuring tube forward complete with all sealing components out of the fitting. With the RAGK type, the device must be removed from the tube and the head pieces must be screwed off the rear plate and pulled off the measuring tube. Now the stops (4) and (4a) can be removed and the float can be taken out of the tube.
CAUTION: The float can easily be lost. Please disassemble the device on a working surface where nothing can fall or roll off, such as trays or cardboard boxes.With RAGL / RAGK with valve the complete valve unit can be pulled forward after loosening the safety screw. All maintenance operations at the Rotameter (for example withdrawing of the valve gland or removal of the tube) are only permitted when the meter is fully drained and without pressure. Note: In case of a built-in valve, place the safety screw correctly into the designed bore. In case of a defect of the display unit, the cover of the display unit can be removed after loosening the cover screws. When the display unit is taken out, recalibration will be necessary.
Hints for Cleaning: The measuring tube and float may be cleaned with alcohol. When cleaning a plastic float, please be careful when using solvents. Do not leave plastic floats in solvents for lengthy periods of time. After cleaning the tube, blow it dry. If there is considerable dirt accumulation on the tube, wash it in hot soap and water solution. Use bottle brushes only when there is no risk of damaging the inside of the tube. Please rinse with distilled water or alcohol.
CAUTION: The tubes are calibrated individually. The measuring tube, the float and the scale must be kept together.
Safety Hints: The measuring tube is made of glass and therefore fragile. All kinds of damage coming from the outside must be avoided. The maximum specified pressures must not be exceeded. Tension in the glas over 6N/mm² have tobe avoided. Therefore the temperature difference in the glas may not exceed 40°C. Please avoid temperature shocks. ROTA YOKOGAWA does not give any warranty in case the of improper use of Glas-Rotameter.
Units with limit switches /GI1...GI4: See instruction manual IM 01R01B14-E-H. Particularly the explanations at explosion proof must be regarded for units with option /XE. |
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