Hoyer MS 56-132 Instrucciones página 4

Handling
Storage
All motor storage should be done indoors, in dry, vibra-
tion free and dust free conditions.
Unprotected motor surfaces (shaft-ends and flanges)
should be given anti-corrosion coatings.
It is recommended that shafts are rotated periodically by
hand to prevent grease migration.
Anti condensation heaters, if fitted, should preferably
be energized.
The characteristics of electrolytic capacitors, if fitted to
single-phase motors, will require »reforming" following
periods of storage beyond 1-2 years. Contact Svend
Høyer A/S for details.
Installation
Base
The purchaser bears full responsibility for preparation
of the base.
Metal bases should be painted to avoid corrosion.
The base must be even, and sufficiently rigid to with-
stand possible short circuit forces. They shall be dimen-
sioned as to avoid the occurrence of vibration due to
resonance.
Base studs
Bolt the base studs to the feet of the motor and place a
1-2 mm shim between the stud and the feet.
Align the motor by using appropriate means.
Grout the studs with concrete, check alignment, and drill
holes for locating pins.
Drain holes
If the mounting designation differs from standard, check
that open drain holes face downwards.
Motors with closable plastic drain plugs are delivered
with these in the open position.
In extremely dusty environments all drain holes should
be closed.
Setup
Correct setup is essential to avoid problems with bear-
ings, vibrations and possible fractured shaft extensions.
Connection
The normal motor design is with cable entries on both
sides and with terminal box on top.
Motors are available with top mounted terminal boxes
rotatable 4 x 90, and some with side mounted terminal
boxes.
Availability of these solutions is described in the product
catalogues.
If any cable entries are not in use, they must be closed.
Besides the main winding and earthing terminals the ter-
minal box can also contain connections for thermistors,
standstill heating elements, bimetallic switches, or PT
4
motorinstruktioner-A5-10 OUTL.indd 4 motorinstruktioner-A5-10 OUTL.indd 4
100 resistance elements.
WARNING
Voltage may be connected at standstill inside the termi-
nal box for heating elements or direct winding heating.
Connection diagrams for auxiliary elements are placed
inside the terminal box cover.
WARNING
The capacitor in single-phase motors can keep a charge
which appears across the motor terminals, even when
the motor has reached standstill.
Assembly and disassembling
Important
These two jobs must be carried out by qualified personel
using only suitable tools and working methods.
Bearings
Special care shall be taken with the bearings. Bearings
shall be removed using pullers and fitted by heating or
the use of specialized tools for the purpose.
Fitting coupling halves and pulleys
Coupling halves and pulleys shall be fitted using suitable
equipment and tools that do not damage the bearings.
Never fit a coupling half or pulley by hammering into
place or remove it using a lever pressed against the
body of the motor.
Equilibration
The rotor of the motor is dynamically balanced.
As standard, balancing has been carried out using a
half key.
Maintenance and greasing
Common check-up
• check the motor at regular intervals
• keep the motor clean and ensure free ventilation
air-flow
• check the condition of shaft seals (eg V-ring) and
replace if necessary
• check the condition of connections and mounting and
assembly bolts
• check the bearing condition by listening for unusual
noise, vibration measurement, bearing temperature,
inspection of spent grease or SPM bearing monito-
ring
"When changes of condition occur, dismantle the
motor, check the parts and replace if necessary."
Greasing
Motors with eternal greased bearings.
Motors up to frame size 160 are normally fitted with eter-
nal greased bearings of the 2RS type. Bearing types are
specified in the respective product catalogues.
Motors fitted with 2RS-bearings can be regreased by
opening the motor, cleaning the bearings and bearing
housings, and filling these with new grease approxim-
ately to a level around 50-70%.
September 2005
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