5
Instructions and Maintenance Sheets
Electric Test Pump “HEP0250”
Replace the seals at least every two years.
Change oil after 50 working hours first time, and then, every 500 working hours.
Use mineral oil SAE30. This
maintenance timing can change with harder working conditions
.
TROUBLE SHOOTING
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Pump does not reach the desired pressure: check in order: suction filter, air in the pump, pressure valves, inlet
connections, seals.
‐
Pressure change continuously: check the presence of air bubbles in the circuit, check the presence of dirt, the
filter, valves and seals.
‐
Pressure drop: Check dirty on filter and valves. Check the gaskets.
‐
Noisy pump: Check air suctions. Clean and move the valve. Clean the filter. Check water temperature. Check
mechanical parts, particularly ball bearings.
‐
Water with oil: Change the oil and look for damaged gaskets and rings. High humidity may cause this
inconvenience.
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Water leaking from the head: Change damaged gaskets and rings.
‐
Oil leaks: replace oil gaskets.
‐
Motor Hum: Turn off the motor immediately and verify if the pump is not blocked. Check if the voltage in the
electric net corresponds with the data label. Remember that long power cords may cause voltage losses. Verify
voltage at the pump plug.
‐
Motor stops suddenly: Thermic protection switched off the pump for too high temperature. Check if voltage is
correct. Wait 10 minutes to re‐start.
‐
Motor does not start: Check electrical connections, thermic protection, emergency stop switch and magneto
switch on the machine. Check differential on the power line
ELECTRIC SCHEME
The pump must always be handled and repaired by qualified personnel.
