Troubleshooting your Comet Diaphragm Pump
Monday, 4 November 2019 | Admin
The proper operation of a diaphragm pump often depends on its proper installation and careful maintenance.
In this article we have summarized the most common problems that may occur during the normal use of a diaphragm pump and the necessary actions to fix them.
Some procedures are routine maintenance, while others should be carried out by skilled technicians or at authorized service centers.
Problem, cause and remedy of the main malfunctions of a diaphragm pump:
PUMP DOES NOT PRIME OR DOES NOT DRAW WATER
When the pump does not prime or draw water, there are generally three causes:
NO PRESSURE OR LOWER PRESSURE THAN NECESSARY
Pressure problems may be caused by an RPM speed that is not adequate to the technical characteristics of the pump, in this case it is sufficient to reset the number of revolutions indicated in the manual to recreate the pressure necessary for a correct use.
Irregular pressure can also have several causes:
In the event of excessive pulsations or vibrations, you should certainly check the pulsation dampener, as the purpose of this instrument is to reduce pulsations. Every 50 hours of work you should check the air load inside and if necessary reset pressure by means of a pump.
EXCESSIVE NOISE ASSOCIATED WITH OIL LEVEL DROPS
If the pump starts becoming noisy, check the oil level immediately, if it has decreased it means that the suction line is clogged.
EXCESSIVE OIL CONSUMPTION
If excessive oil consumption is associated with a milky color (of same) it is very likely that one or more diaphragms are broken or damaged.
The diaphragms separate the pumping chamber from the transmission, preventing the pumped fluid from coming into contact with the mechanical parts and the oil; when the diaphragm breaks, the fluid filters in the oil making it milky.
At this point it is important to replace all diaphragms and oil to avoid major damage.
Let's now consider the damage that can occur to the diaphragms: in case of breakage of a diaphragm it is important to identify the cause and act to prevent its recurrence.