BJM Pumps HAZ75-575T - Manual (Page 15)

14
MAINTAINING YOUR PUMP
• Pump should be disconnected from the electric power supply before proceeding
to do any service or maintenance.
• Pump should be inspected at regular intervals.
• More frequent inspections are required if the pump is used in a harsh
environment.
• Preventative maintenance should be performed to reduce the chance of
premature failure.
• Worn impellers and lip seals should be replaced.
• Cut or cracked power cords must be replaced. (Never operate a pump with a
cut, cracked or damaged power cord.)
• Seal oil should be checked once per year.
• Maintenance should always be done when taking a pump out of service before
storage.
1) Clean pump of dirt and other build up.
2) Check condition of oil around the shaft seals.
3) Check hydraulic parts: check for wear.
4) Inspect power cable. Make sure that it is free of nicks or cuts.
5)
CHANGING SEAL OIL
Changing the seal oil in the HAZ Series pumps is very easy.
1) Make sure that the pump cable is disconnected from the power source.
2) Lay the pump down on its side.
3) Remove the screws that hold the bottom plate in place.
4) Remove bottom plate.
5) Remove screws holding the suction cover.
6) Remove the suction cover.
7) Remove the impeller.
8) Remove the inspection screw for the oil chamber (pos#50-08). Pour out a
small sample of the oil. If it is milky white, or contains water, then the oil and
possible, the mechanical seal, should be changed. If an oil change is needed:
9) Remove the screws that hold the oil chamber cover in place & remove the oil.
10) Replace the mechanical seal if necessary.
11) Replace the oil.
12) Assemble the pump.