HF SERIES
Page 20
Serial #10127003 and Later
GENERAL PUMP
A member of the Interpump Group
11. PREVENTIVE MAINTENANCE
For pump reliability and efficiency, comply with maintenance intervals as shown in the table of fig. 15.
PREVENTIVE MAINTENANCE
Every 500 hours
Every 1000 hours
Check oil level
Change oil level
Check / Replace:
Valves
Valve seat
Valve springs
Valve guides
Check / Replace:
H.P. seals
L.P. seals
Fig. 15
12. PUMP STORAGE
12.1 Long Term Inactivity
If the pump is started for the first time after a long period from the date of shipment, before operation check
the oil level, inspect the valves as specified in chapter 10, then follow described start-up procedures.
12.2 Filling Pump with Anti-Corrosion Emulsion or Anti-Freeze Solution
Method for filling pump with anti-corrosion emulsion or anti-freeze solution using and external diaphragm pump based on
the layout shown in par. 9.7, between pos. 1 and pos. 2 of fig. 6 and fig. 6/a:
•
In place of the service tank, use a suitable container containing the solution to be pumped.
•
Close the filter drainage, if open.
•
Make sure that the hoses to be used are clean inside and spread grease on their connections.
•
Connect the high pressure exhaust hose to the pump.
•
Connect the suction hose to the diaphragm pump.
•
Connect the suction hose between the pump head and the diaphragm pump.
•
Fill the service container with solution / emulsion.
•
Insert the free ends of the suction hoses and the high pressure exhaust hose inside the container.
•
Switch on diaphragm pump.
•
Pump the emulsion until it exits from the high pressure exhaust pipe.
•
Continue pumping for at least another minute.
•
Stop the pump and remove the previously connected hose.
•
Clean, grease and plug the connections on the pump head.
The characteristics of the emulsion can be strengthened if necessary by adding, for example, Shell Donax.
13. PRECAUTIONS AGAINST FROST
Follow the instructions in chapter 12 in areas and times of the year at risk of frost (see par. 12.2).
In the presence of ice, do not run the pump for any reason until the circuit has been fully
defrosted, in order to avoid serious damage to the pump.
Ref 300764 Rev. F
05-21
