SPP Pumps Thrustream - Manual (Page 9)

Operators Instructions for Horizontal
Standard Thrustream Centrifugal Pumps
Manual No/Rev
W12-003E / 6
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 9 of 28
Disconnect the pump drive by removal of the
spacer from the coupling. Connect the
electrical supply to the pump unit. Momentarily
switch on motor and check direction of
rotation. This should match the direction of
rotation of the pump. For three phase electric
motors, if the direction of rotation is incorrect,
disconnect the supply and change over two of
the three supply phases. Replace the
coupling spacer.
5.2 Starting Procedure
BEFORE A THRUSTREAM PUMP IS STARTED
ALWAYS ENSURE THAT THE SUMP IS FILLED
TO THE CORRECT LEVEL WITH LIQUID, AND
THAT
ANY LEVEL CONTROLS ARE
FUNCTIONING CORRECTLY.
Abrasion and Entrapment Hazard
Do NOT touch any moving or rotating
parts. Guards are provided to prevent
access to these parts, where they have
been removed for maintenance they MUST be
replaced before operating the equipment.
Check that the suction valve is open and that
the pump is primed.
Open the discharge valve to one quarter open
to prevent hydraulic lock from occurring.
Switch on the motor and allow it to build up to
full operating speed. Slowly open discharge
valve until the pump reaches the required duty
condition.
Check that the motor is not overloading, unit is
not vibrating or excessively noisy, the motor is
not overheating, and that the pump is
developing the correct flow and head
requirements.
If the pump is operating at its normal speed,
the pump should be shut down at once if any
of the following defects are found:
a) No liquid delivered.
b) Not enough liquid delivered.
c) Not enough pressure.
d) Loss of liquid after starting.
e) Vibration.
f) Motor runs hot.
g) Excessive noise from cavitation.
h) Pump overheating.
Recommended corrective action for these
faults is given in Section 7 Faults and
Remedial Action.
5.3 During Operation
Hot Surfaces Hazard
Do NOT touch surfaces that during normal
running will be sufficiently hot to cause
injury. These are marked with the HOT
warning symbol. Note that these surfaces will
remain hot after the pump has stopped:
allow sufficient time for cooling before
maintenance. Be cautious and note that other
parts of the pump may become hot if a fault is
developing.
Cold Conditions Hazard
Do NOT operate water pumps in
temperatures below freezing point,
without first checking that the pumped fluid is
not frozen and the pump is free to turn. Pumps
in these environments should be drained down
during inactivity and re-primed before starting.
Hazardous Noise
In addition to local or site regulations for
noise protection, SPP Pumps Ltd.
recommend the use of Personal Ear
Protection equipment in all enclosed pump
rooms and particularly those containing diesel
engines. Care must be taken to ensure that
any audible alarm or warning signal can still
be heard with ear defenders worn.
Hazardous Gases, Mists, Sprays and
Leaks
Be aware of the hazards relating to the
pumped fluid, especially the danger from
inhalation of noxious and toxic gases, skin and
eye contact or penetration. Obtain and
understand
the hazardous substance
(COSHH) data sheets relating to the pumped
fluid and note the recommended emergency
and first aid procedures.
Periodic Checks:
a) Pump Bearings:
Check the bearing temperatures do not
exceed 80°C as an increase may indicate the
early stages of bearing trouble.
b) Noise:
Listen for any unusual noise or an increase in
normal sound level.
This may result from:
i) Loose fasteners for guards and other
equipment.
ii) Air trapped in the pump i.e. the pump was
not fully primed.
iii) Cavitation.
iv) Small solids in the liquid.