SPP Pumps Eurostream - Manual (Page 11)

Operators Instructions for
Eurostream Centrifugal Pumps
Manual No/Rev
W22-001E / 9
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 11 of 20
up to the spring.
Slide shaft sleeve (52.3) over shaft (21.1),
larger bore first, ensuring that mechanical
seal faces are clean, free from damage and
square and that gasket (40.01) is correctly
seated.
Ensure that the rotating seal face is floating
against the spring before re-fitting the
impeller.
b) For pumps fitted with solid stainless steel
shaft (21.11) and no sleeve.
Slide the seal face assembly along the shaft
(21.11) until it butts against the fixed face.
Locate the spring and spring holder over the
shaft.
Slide abutment ring (160.0) over shaft.
Ensure that the rotating seal face is floating
against the spring before re-fitting the
impeller.
Locate impeller key (94.01) into shaft key
way.
Relocate impeller (23.0) on shaft (21.1).
Refit impeller lock washer (93.0) and screw
on impeller nut (92.2) and carefully tighten.
Ensure impeller rotates freely by hand. If not
investigate and rectify.
Where used, slide motor tee-bolts (90.09)
back into slide rails (102.01).
Relocate casing cover (16.1) into casing
(10.2), using casing studs (90.2), ensuring
that gasket (40.0) is seated correctly.
Fit nuts (92.0) and tighten uniformly in
diagonally opposed pairs sequence.
Fit and tighten the motor mounting bolts or
where used, the tee-bolt nuts (92.09).
Reconnect supply, ensuring correct pump
rotation.
For SPP Pumps Ltd. Spares and Service
Department, telephone 0118 9323123, see
the back cover for further details of SPP
Pumps Ltd. After Sales Service.
7. Faults and Remedial Action
POTENTIAL FAULT OR DEFECT:
No liquid delivered.
Insufficient liquid delivered.
Liquid delivered at low pressure.
Loss of liquid after starting.
Excessive vibration.
Motor runs hotter than normal.
Excessive noise from pump cavitation.
Pump bearings run hotter than
normal.
PROBABLE CAUSES
Pump not primed.
Speed too low.
Speed too high.
Air leak in suction pipework.
Air leak in mechanical seal.
Air or gas in liquid.
Discharge head too high (above
rating).
Suction lift too high.
Not enough head for hot liquid.
Inlet pipe not submerged enough.
Viscosity of liquid greater than
rating
Liquid density higher than rating.
Insufficient nett inlet head.
Impeller blocked.
Wrong direction of rotation.
Excessive impeller clearance.
Damaged impeller.
Rotor binding.
Defects in motor.
Voltage and/or frequency lower
than rating.
Lubricating oil dirty or
contaminated.
Foundation not rigid.
Misalignment of pump and driver.
Bearing worn.
Rotor out of balance.
Shaft bent.
Impeller too small.