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The back pressure progressively increases by 0.08 bar for every meter increase in the static height of the pump with respect to the
level of the diesel fuel in the tank.
5.3.2.
Recommendations and Warnings!
• The suction tubing must resist a pressure of at least 10 bar and must be of a diameter NOT LOWER than 1''.
• The tubing must be suitable to function under backpressure.
• Use tubing and accessories suitable for use with diesel fuel.
• Any curves in the suction tubes must be of the widest radius possible to limit the loss of head.
• Make sure that the suction tubing is clean and free of scum.
5.3.3.
Installation of the check valve and filter fig.2
The check valve and a suction filter must be attached to the pick up tube. They must remain immersed at the bottom of the tank. The
check valve and the filter are provided as part of the equipment with the unit.
NOTE: Before connecting the tubing to the pump filter, fill the tubing
with diesel fuel to help prime the pump.
5.3.4.
Connecting the tubing to the unit
Screw the other end of the tubing to the pump filter.
WARNING! DO NOT use conical threaded connectors that could
‰
cause damage to the threaded connector on the pump filter.
5.4.
ELECTRICAL CONNECTION
Electrical connection must be carried out by professionals only.
WARNING! the unit is not equipped with circuit breakers.
‰
It is therefore strongly recommended to install on the plug a 30-mA
residual current operated circuit breaker.
5.5.
STARTING
Filling the pump
5.5.1.
The pump provided with the unit is a self-priming pump capable of
suctioning an empty tube, nevertheless, the pump should be partially
filled with diesel fuel before turning it on for the first time.
5.5.2.
Priming the pump
It is advisable to oversee the first priming phase to make sure that it is
happening in a reasonable amount of time.
Depending on the length and fill status of the priming tubes, the priming of the pump can require from several seconds to several
minutes.
Recommendations and Warnings!
If priming takes a long time, stop the pump and verify that:
- the pump is not running completely dry;
- the suction tubing is air-tight and completely immersed in the fluid to be pumped;
- the suction filter is not clogged;
- the difference in height for priming is not greater than 3 meters refer to fig.1;
- the residual air in the tubes has been evacuated.
5.5.3.
Calibrating the meter
Before using the unit station, check the METER ACCURACY.
Proceed as follows:
• Take out the nozzle and start the pump as described in the above paragraph.
• Run the fuel into a calibrated container.
Recommendations and Warnings!
• To correctly check accuracy:
• Use a precision sample container, featuring a graduated measuring scale, with a capacity of at least 20 litres.
• Before making the check, always make sure you have eliminated all the air from the system and then run the fuel until a full and
regular flow is achieved.
• Dispense continuously at maximum flow rate.
• Stop the flow by quickly closing the nozzle.
• Compare the reading provided by the container, with that provided by the unit, after waiting for all the froth to disappear.
WARNING! Differences of up to 0.2 litres out of every 20 litres fall within the guaranteed accuracy of +/- 1%.
‰
5.5.4.
Turning on the unit
Lift the dispensing nozzle away from the rest
© Jack Sealey Limited
Original Language Version
fig.2
Lift the rest (ON)
TP955.V2 Issue:2 (H,F) 12/10/21
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