SPP Pumps Auto Prime Hydraulic Submersibles - S3T - Manual (Page 7)

Operators Instructions for
HYDRAFLOW S3T Hydraulic Submersible Pump
Manual No/Rev
W79-007E / 4
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 7 of 12
150SSU @ 38°C (100°F) or equivalent
specification.
Note: When using vegetable (Rape Seed) based
bio-degradable oil it is important to check
the condition of the oil frequently as it tends
to breakdown more quickly than the more
expensive
mineral or synthetic bio-
degradable oils.
NOTE – DO NOT MIX OILS
Look especially for a darkening in colour as
an
indicator of reduced lubrication
performance or contamination and arrange
to drain the system, clean the tank and
replace with new oil.
6.1.2 Lubricating Oil:
Use clean Bio-degradable Hydraulic 46 Oil
or 20W Hydraulic Oil or Mobil 10W30
Synthetic Oil.
6.2 Maintenance Chart
Period Maintenance Items Required
Daily Check hydraulic hoses for damage and replace as required. Spare hydraulic hoses
Check Diesel fuel level, top-up as required. Diesel Fuel
Check Hydraulic oil level, top-up as required. Hydraulic Oil
Weekly Check the level and condition of the oil in the pump seal
chamber and top up if necessary. Hydraulic Oil
(approx 1 oz)
500 hours Replace hydraulic oil filter element. (10 micron filter)
Change the oil in the pump seal chamber
Oil Filter Element.
Hydraulic Oil (app. 1 oz)
1000 hours Drain hydraulic oil, clean the reservoir tank and replace with
new oil.
Hydraulic Oil (100 l)
Cleaning Solvent
6.3 General
The only routine maintenance required
under normal use is to check oil in seal
cavity in top cover (#11). This oil is to be
20W hydraulic oil (approx. 1 oz.). Change
oil every 500 hours of operation. If no oil is
present or oil is emulsified, shaft seal may
need replacement.
Further maintenance may be required if:
(a) Pump discharge volume is inadequate.
(b) Oil leakage from pump is present.
6.4 Pump Disassembly:
6.4.1 Remove six 3/8" bolts (#12) From top
cover.
6.4.2 Remove top cover and motor assembly
from volute (#3).
6.4.3 Check condition of "O" ring (#10) and
replace if necessary.
6.4.4 Check for debris in the volute.
6.4.5 Check wear ring (#4). Replace if wear is
excessive.
6.4.6 Hold impeller (#7) securely and remove
socket head retaining screw (#5) and cone
washer(#6) from impeller end.
6.4.7 Using hex key wrench, or hex key socket
with impact wrench, unscrew impeller (#7)
(right hand threads).
6.4.8 Check impeller for wear and replace if
necessary.
6.4.9 Remove 2 bolts (#15) from handle (#16)
and remove.
6.4.10 Remove seal spring and washer.
6.4.11 Remove 2 motor mounting bolts (#21) from
top cover and carefully remove motor(#22).
6.4.12 Inspect "O" ring (#13) and replace if
necessary.
6.4.13 Check top cover for wear and replace if
wear is extreme.
6.4.14 Do not disassemble hydraulic motor (#22).
If hydraulic motor needs service, it should
be performed by a qualified Sterling Fluid
Systems Service Engineer or replaced.
6.5 Pump Reassembly:
6.5.1. Fasten motor to top cover making sure the
"O" ring (#13) is in place.
6.5.2. Install new shaft seal (#9) keeping the parts
extremely clean and using clean grease to
aid installation.