SPP Pumps Auto Prime Hydraulic Submersibles - S3T - Manual (Page 8)

Manual No/Rev
W79-007E / 4
Operators Instructions for
HYDRAFLOW S3T Hydraulic Submersible Pump
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 8 of 12
6.5.3. Screw impeller onto shaft and lightly tap on
vane to tighten.
6.5.4. Install cone washer and socket head screw
and tighten while holding impeller firmly.
6.5.5. Install drive assembly into volute making
sure "O" ring (#10) is in place.
6.5.6. Install handle.
6.5.7. Fill oil chamber in top cover (approx. 1 oz.).
6.5.8. Test spin pump before using to check for
leaks.
6.6 Pump Hose Connection:
NOTE – When the pump hose connections have
been disconnected from the hydraulic motor
it is IMPORTANT to ensure that they are
refitted correctly. The inlet port on the
motor is normally fitted with the Female
quick release hose coupling.
7. TROUBLESHOOTING
7.1 Preliminary Check List
7.1.1. Check the hydraulic power source to be
sure the oil flow volume and available
pressure is within the range of the
submersible pump. If the power source is
capable of supplying oil in excess of the
required flow, damage will result to the
hydraulic motor and/or pump components
due to over speeding.
7.1.2. Be sure the submersible pump is connected
to a single direction open centre power
source. The submersible pump is not bi-
directional and operating in reverse rotation
can cause seal failure in the hydraulic
motor. The system must be open centre
at all times (return flow from the
submersible pump motor must be allowed
to flow freely to the system oil reservoir).
Do not use hydraulic directional valves that
block the return flow when in the centre
position of the valve. This type of valve is
for hydraulic cylinder operation only and will
cause the submersible pump to stop
abruptly when moved to the centre position
of the valve. This will cause excessive
pressure on the return side of the motor
causing seal failure and possible shaft
damage.
7.1.3. Be sure that the hydraulic hose connections
are clean and properly connected. When
using quick released hose couplers, you
muse be sure that they are completely
connected. A partly connected coupler will
result in seal damage to the hydraulic motor
and pump seal.
7.1.4. Be sure that the pump is submerged
adequately. This is especially important for
vortex impeller pumps since the impeller is
recessed up into the top of the volute.