Blagdon Pump AP50 Submersible - Manual (Page 2)

AP50
AIR POWERED CENTRIFUGAL PUMP
1.
OPERATION
1.1
Check level of oil in reservoir by removing oil filler plug (36). An
SAE 20 mineral based oil or equivalent is recommended.
Caution
Care should be taken when working with oils & greases, they
should be handled in accordance with good standards of industrial
hygiene and safety practices. Use a barrier cream, wear pvc or
neoprene gloves and overalls. Regular changes of contaminated
clothing is recommended.
1.2
Ensure that all air connections to the pump are clean and secure.
Turn on air supply to check free starting of the pump prior to
submergence in the fluid. Maximum air pressure - 8.6 Bar (125
psi). A filter / regulator located in the air supply line is
recommended.
1.3
If the pump fails to start immediately, the rotor vanes (55) may be
sticking, turn air supply on & off full bore repeatedly, to free the
vanes.
1.4
Should the pump still fail to run, turn off the air supply and
remove the base strainer (1). Turn the impeller (3) by hand to
ensure free rotation, remove solids accumulation where necessary.
Refit base strainer.
1.5
Ensure air filter (39), located in air hose union (40) is clean. Blow
air through exhaust outlet thereby reversing the air flow, which in
turn should remove any contamination. Alternatively, remove air
hose union (40) and manually clean the filter.
1.6
When operating the pump fully submerged, a hose should be
fitted to vent the exhaust air to atmosphere.
2.
LUBRICATION
2.1
Check oil level daily or after 8 hours of continuous use. The rate of
oil flow is set prior to despatch from the factory. Adjustment can be
made to the oil flow if necessary. Remove the lockscrew (26) to
gain access to the oil feed screw (25). Turn the oil feed screw (25)
clockwise to restrict oil flow and anti-clockwise to