Pag.11 (Funct. and Maint.Manual n.03 – Fourth edition) OMI.EN-PCP001 R01
Therefore, remove the stator, pack it in order to shelter it from light and air, and
store it in a cool, dry place.
•
Rotor: Rest it on wooden blocks and cover it for protection against mechanical
damage.
•
Shaft packing: Remove the gland, and grease the shaft.
•
Stainless steel parts: No protection needed.
•
Other non-painted pump parts: Grease.
•
Motors: see manufacturer’s instructions.
6 ELECTRIC CONNECTION – PIPELINE CONNECTION
6.1 Installation of motor
6.1.1 Electric connection
The work relating to electric connections shall be carried out by authorized and specialized
personnel.
In order to connect electric equipment to the machine please follows at the directive CEI
EN 60204-1:2005
The power supply must be equipped with a thermal magnetic overload cutout, or a fuse,
and a compulsory earthing system, as mentioned above.
The electric wire shall be double-insulated and fire-retardant and with an adequate cross-
section for every phase. The connecting to the Neutral must be coherent with safety
system of installation plant (TT-TN etc.).
Before starting the pump, check:
tension, frequency and number of phases conform with the electric motor
•
motor connections (star/triangle) conform with the alimentation available.
•
wire section conform with the amperage concerned.
6.1.2 Pump-motor coupling
6.1.2.1 Close coupled version
The coupling of a progressing cavity pump with its motor is not difficult, though problems
may arise since the mechanical seal (or packing) is installed on the hollow shaft which, if
not coupled to the motor/converter, can easily break the seal.
Therefore, during assembly, it is necessary to be careful not to move excessively the axis
of the hollow shaft. Oil the male shaft of the motor/converter, place it so that its key is in
line with the corrispondant bore.
Engage the propeller shaft until the two flanges (the motor’s and the pump’s) were
connect. Then turn the motor/converter until the bolts holes of the flanges coincide. Let the
pump shaft hit the motor shaft and tighten the grub screw (line it up with the cavity set it up
on the gearmotor shaft).
6.1.2.2 Bearing housing version (with elastic joint)
