Product Manual

b) if this happens after many hours of work and continues after 1 or 2 top ups, it is a symptom of diaphragm swelling
caused by suction vacuum (dirty filter, deformed inlet tube or chemical attack to diaphragm). In this case check the
filter and inlet system and/or refer to a specialized technician to check the diaphragm.
STATE OF OIL IN THE CASE OF BROKEN DIAPHRAGM
If the oil becomes white (water present in oil), it may be a symptom of breakage of one or more diaphragms, therefore it
is necessary to stop work and let a specialized technician check the conditions of the diaphragm and substitute if neces-
sary.
Notice:
• If work is continued during these conditions it may cause serious damage to internal parts of the pump.
• If it is not possible to substitute the diaphragm within one day of its breakage, empty the crankcase of water and pour in oil (even
used) or diesel oil to stop rust from forming on the internal components .
INLET SYSTEM
The inlet system must be kept efficient, that is:
There must not be:
• Entrance of air caused by tube wear;
• Loosening of fittings;
• Wear of joints;
Regarding this, check that there are no small drips when the pump is still, this means air is entering the pump when in
motion.
The filter must be maintained and kept clean with frequent inspections especially if powder based products are used.
Periodical maintenance to be carried out by user as follows:
ATTENTION: check pump only when it is not running.
OIL
The level and cleanliness of the oil should be frequently checked (eg: each time the tank is filled). This will indicate if the
pump and diaphragm are working properly.
OIL LEVEL
When pump is turned off, the oil level must correspond to the reference slot found on the oil sight glass or oil level cap
depending on type of pump. The oil level is not always constant when the diaphragm pump is working: the oil level is
lowered when the pump starts working and is priming, when the spray liquid reaches the pump, the oil level rises to nor-
mal level.
During operation attention must be made to a decrease in the oil level:
a) if this happens during the first hours of working it is normal. Add SAE 30W non-detergent type oil to proper level as in
fig.5.