Blagdon Pump AP50 Submersible Pump - Manual (Page 3)

DIMENSIONS
increase oil flow. Replace lockscrew (26) to protect oil feed screw
from damage.
2.2
There are two grease lubrication points on the pump, both use a
Castrolease CL Light, or equivalent grease. The upper grease
nipple (67) only requires one push of the grease gun per month to
lubricate the governor mechanism. the lower grease nipple,
supplying the lower pump bearings and pump seals may be
generously filled. Remove the level plug (65) and pump grease
into the grease nipple (67) until it shows at the level plug aperture.
Replace level plug (65). Check levels regularly & ensure correct
grease is used. Failure to use correct grease may result in
premature seal and bearing failure.
NOTE - When operating the pump the following guidelines
should be observed to ensure low maintenance.
2.3
Pumping solids increases wear, it is therefore advisable to to
arrange for the pump to stand on a firm base to prevent sinking.
2.4
When pumping abrasive solids and matter in suspension, the
impeller (3) clearance should be increased by adding more
gaskets (4) & (5) to act as shims at the flange joint.
2.5
Do not operate the pump for long periods out of the fluid as the
frictional heat generated may damage the seals and bearings.
2.6
The noise generated by the pump in confined spaces may be
objectionable, a silencer (part no. AP50.79), is available to reduce
noise levels to an acceptable level.
2.7
When it is necessary to completely de-water tanks, bilges etc., a
perforated base plate (part no. AP50.78), is available and should
be fitted as an alternative to the standard strainer (1).
3.
OVERHAUL / REPAIR
NOTE - Ensure air supply is dis-connected before attempting to
overhaul any section of the pump.
Governor
Housing
3.1
Remove cylinder bolts (51) from pump assembly. Lift the
governor housing (50) free from the pump assembly together
with air hose union assembly.