5
6.4.
ELECTRICAL CONNECTIONS
Only for the versions with electrical contact for minimum level check, carry out the connection as per the diagram indicated
below. Nominal capacity of the contacts = 15A 125/250V AC
7.
OPERATING INSTRUCTIONS
7.1.
MEASURES TO BE TAKEN PRIOR TO START-UP
•
The unit may be put into operation by specialized personnel.
•
Use gloves and eye protection as provided for in the lubricant safety data sheet.
•
DO NOT use lubricants that are aggressive to NBR gaskets. If you are unsure, contact the Dropsa S.p.A technical office for
a detailed list of recommended lubricants.
•
Never ignore health hazards and always follow sanitary regulations.
•
Always use suitable piping for the operating pressure.
•
Check the integrity of the pump.
•
Check the lubricant level using the dipstick located on the reservoir. If the level is low, proceed as described in section 7.2.
FILLING LUBRICANT
•
Ensure that the pump operates at operating temperature and that the pipelines are free of any air bubbles.
•
Check the correct connection of electrical devices.
To determine the maximum operating pressure, it is necessary to know the pressure drop of the pipeline connected to the
pump: internal diameter, length, operating temperature and type of lubricant.
Depending on these variables to achieve a proper supply to the delivery point, it is always necessary to ensure that the pipeline
pressure loss plus the pressure required at the lubrication point does not exceed the maximum pressure supplied for pump
delivery.
7.2.
FILLING LUBRICANT
For the versions with built-in reservoir, you must proceed as follows:
•
Remove the protection plug.
•
Tighten the fittings necessary for filling (thread present G ½ UNI ISO
–
228/1 male).
•
Start the fill pump until reaching the desired level (without exceeding the max level line).
•
For the first filling, you must press the button on the handle of the dipstick to evacuate the air inside.
•
If the maximum level is exceeded, you will notice a leakage of lubricant from the hole on the reservoir itself.
•
Remove the fitting. The valve will keep the grease from coming out.
•
Refit the protection plug.
7.3.
REGULATIONS
The delivery pressure is in a 4.8:1 ratio (single acting versions) or 1:1 (dual acting versions) with the feed pressure, therefore
adjust the latter based on the needs of the system.
For the adjustment of the flow rate, you must proceed as follows:
•
Remove the protection plug.
•
Loosen the locknut (A) using a number 13 wrench to release the screw (B)
•
Use the appropriate size screwdriver to tighten (decrease flow rate) or loosen (increase flow rate).
•
Once the regulation has been completed, tighten the locknut (A).
•
Refit the protection plug.
A B
