TUFFA TANKS 10000VBFS, Инструкция по установке, эксплуатации и обслуживанию

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2. Purge the system (pump, pipelines, meter) of air by dispensing until the flow stream is full
and steady.
3. Stop the flow by shutting off the nozzle, but let the pump running.
4. Reset the batch register by means of the reset knob (pos. “2”).
5. Dispense at the flow rate which the best accuracy is required at, by using a calibration
container having a capacity not lower than 20 litres. Do not reduce the flow in order to reach
the graduated zone of the calibration container. The right method is to start and stop the full
flow repeatedly until the required filling is obtained.
6. Compare the indication of the calibration container (real value) with the one of the meter
(indicated value).
- If the indicated value is higher than the real value, loosen the screw (pos. “12”);
- If the indicated value is lower than the real value, tighten the screw (pos. “12”).
7. Repeat the operations 4 to 6 until accuracy is satisfactory.
8. Tighten the plug (pos. “14”) again. The O ring which the calibration screw is provided with,
has the function to avoid accidental loosening of the adjustment screw but does not have any
sealing functions. Therefore it is always necessary to properly fix the plug with the sealing
gasket (pos.“12”).
1.5 USE
After installation and calibration the K33 is ready to work. Turn the reset knob (see diagram
1,pos. “12”) (clockwise if it is mounted on the left of the meter and anticlockwise if it is mounted
on the right) until the batch register is completely reset. The totaliser cannot be reset in any
way. Make sure that during use pressure does not exceed the value indicated insection
“Technical data”.
1.6 USE BY GRAVITY
K33 can also be used in fuel units which are not equipped with pump sand where the flow is
generated by the difference in fuel level between the tank and the nozzle outlet. As a reference,
a system composed of a tank off the ground, with the meter installed right at the bottom of the
tank,a 3-m long 1’’ flexible pipe and a manual nozzle type Self 2000, guarantees a flow rate
of approximately 30 litres/minute if the difference in level is higher than 1.5 metres. Longer
pipes or nozzles producing higher pressure losses reduce the flow in respect to the existing
difference in level. Use by gravity is not recommended with differences in level lower than 1
metre, as the consequent reduced flowrate causes the meter to work outside its guaranteed
accuracy range. On field calibration is always advisable in case of gravity installations.
1.6 MAINTENANCE
No ordinary maintenance is required provided that the meter K33 is properly installed and
used. An incorrect filtering on the meter inlet may block or wear out the measuring chamber,
thus affecting the meter accuracy. Should this problem occur (see section “Problem, Causes
and Solutions”) disassemble the measuring chamber, as shown in section “Disassembling/
Reassembling”.
7. OPERATION OF THE SYSTEM