Spp-pumps Auto Prime Hydraulic Submersibles - S2TC-2 User Manual download pdf (Page 8)

Manual No/Rev

W79-006E / 4

Operators Instructions for

HYDRAFLOW S2TC-2 Hydraulic Submersible Pump

Our policy is one of continuous improvement and we reserve the right to alter specifications at any time

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6.5 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 marked with an ‘A’ and 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.

7.2 Troubleshooting Guide

Hydraulic Pressure High

(above 70 BAR - 1000PSI)

Submersible Pump

Spins

Submersible Pump

NOT Spinning

Hydraulic Motor or

Pump Bearings Seized

Discharge Head Too

High for Pump

Impeller

Jammed

Discharge Hose

Kinked or Plugged

Hydraulic Pressure Low

(below 70 BAR - 1000PSI)

Lack of Water in Pump

Pump Inlet Obstructed

Pump not Properly

Submerged

Air Trapped in Volute

Hydraulic Motor Worn

Excessive Wear

on Impeller

Clear debris from

Inlet or Strainer

Replace Hydraulic Motor

or Pump Bearings

Check Hydraulic Power

Unit with Submersible

Pump disconnected to be

sure it is functioning

properly

Remove Top Cover

and free Impeller

Clear Hose of obstruction

Replace Layflat

Discharge Hose with

Rigid Hose or Pipe

Be sure Pump is

submerged initially to

Oil Filler Plug on

Bearing Housing

Replace Motor

Replace Worn Parts

Check Vent Screw

(on some models) to

be sure it is not plugged

Lower Pump into liquid

while operating

Lay Pump on it’s side with

the discharge in 12 o’clock

position to allow air

to escape

Remove Layflat discharge

hose that may trap air

PUMP NOT PUMPING

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