Adam Pumps PA 8050, Руководство по эксплуатации и обслуживанию

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ENGLISH (TRANSLATION OF ORIGINAL INSTRUCTIONS)
EN
5.2 - h
ydraulIc pIpe connectIon
5.3 - r
emarks on the suctIon lInes
Before connecting the pump, make sure the tank, fittings and pipes used are clean and free from waste or
processing residues. Before connecting the discharge pipe to the pump, we recommend partially filling the
pump body with diesel fuel to lubricate and facilitate the priming procedure.
PA1 70A PA2 80 & PA2 100 PA3 150
Suction Discharge Suction Discharge Suction Discharge
Pump inlet connection thread 1" G - BSP 1" G - BSP 1" G - BSP 1" G - BSP 1" G - BSP 1" G - BSP
Recommended minimum internal
diameters
ø25 mm ø19 mm ø25 mm ø25 mm ø30 mm ø30 mm
Recommended rated pressure 10 Bar 10 Bar 10 Bar 10 Bar 15 Bar 15 Bar
Pipe suitable for operation under
negative pressure
• • •
CAUTION! Do not use couplings or connection fittings with conical threading, as these
could damage the pump coupling outlets if tightened too much.
SUCTION
LINE
The electric pumps in this manual are self-priming and can draw the liquid from a maximum height of 2
metres. Caution, proper priming and the time required for this can be affected by an automatic nozzle on
the discharge line, which prevents normal air extraction from the pipe. It is therefore always advisable to
prime the pump for the first time without the automatic nozzle and with the discharge pipe emptied from the
liquid. To facilitate the subsequent start-up operations of the pump so that they are immediate, it is always
recommended to install a foot valve to prevent the suction pipe from emptying and to keep the pump wet.
When the system is in operation, the pump can work with negative pressure at the suction inlet up to 0.5
Bar, after which cavitation phenomena can start with consequent reduction of the flow rate and increase in
noise. To prevent this phenomenon from occurring it is important to ensure low suction negative pressure, by
using short pipes or pipes with a diameter larger than or the same as those recommended, minimising bends
and using large section suction filters and foot valves with the least resistance possible.Moreover, it is very
important to keep all suction filters clean to prevent the system resistance from increasing when they are
clogged.
DISCHARGE LINE The electric pump must be chosen based on the system’s specifications. Incorrect combinations of the length
of the pipe, of its diameter, of the flow rate of the diesel fuel and/or of the accessories installed on the line,
can create a counterpressure on the discharge line that is higher than the maximum set and so cause the
pump bypass to open (partially) with consequent reduction in the flow rate dispensed. To prevent this from
happening and allow the pump to work properly, the system resistance has to be reduced using pipes that are
shorter and/or with a larger diameter and line accessories with less resistance (e.g. an automatic nozzle for
greater flow rates).
rain and weather events.Position and fix the pump with screws that are suitably sized for the holes on the
motor flange. The best performance in terms of noise and vibration reduction is achieved by placing 4
vibration dampers of suitable height between the pump and the base.For the centre distances of the holes,
see section 12.3 - Overall dimensions and weights.
We recommend using ADAM PUMPS suction and discharge pipes, which are designed specifically for the
pump in use; alternatively, respect the dimensions and specifications in the table below.
CAUTION! The motors are not explosion-proof. They must not be installed in areas with
flammable vapours or open flames.