30
CMG Motors / SGA
/HGA
Installation, operation and maintenance
Delivery
Upon receipt the unit should be thoroughly inspected
for any damage sustained during transit.
Any equipment damage or shortfall should be
immediately advised to your nearest CMG office.
Storage
If the machine is not to be installed immediately, it
should be stored in a clean, dry and preferably warm
environment. Shafts of stored motors should be
rotated occasionally. Specific vibration during
storage may lead to "brinelling" of the bearings,
therefore motors that are subject to extended
storage where vibration exists, should be fitted with
bearing locks.
Installation
All motors must be installed in such a manner as to
ensure the air intake is not obstructed. Refer to
dimension "BL" in the cooling section of this
catalogue. Bed plates or slide rails should be firmly
fixed to a solid, level foundation to ensure the motor
remains rigid and vibration free. Shims or packers
(if required) must be of adequate size and placed
adjacent to and between base fixings. Protective
transport coatings on shafts and/or flanges must be
removed prior to connection to the driven load. A
light coating of grease to shafts and/or flanges will
inhibit corrosion during service and assist removal of
pulleys or couplings.
Coupling drive
In fitting couplings or pulleys to the motor shaft, care
must be taken to ensure the roller/ball bearings are
not damaged. Tapped holes are provided in shaft
extensions to assist in the fitment of couplings
and/or pulleys. Under no circumstances should
couplings and/or pulleys be impact driven onto the
shaft. Couplings or pulleys should be independently
balanced with a half key.
Alignment
Great care must be taken in aligning the complete
machine, since misalignment can cause rapid
deterioration of bearings and lead to other
mechanical failures due to the stress produced.
After final tightening of foundation bolts, machine
alignment should be rechecked as bed plates could
distort. No end thrust should be applied to the motor
without express approval.
Electrical connection
Ensure all electrical connections are solid and
continuous. Check motor starter and overloads for
correct rating and trip setting. All circuit breakers,
HRC fuses or protective devices associated with the
motor must be rated to suit motor running current
and starting characteristics.
Initial start up
Prior to initial start up, the following steps must be taken:
•
Insulation resistance test. On machines up to 600 volt,
the minimum value should be 1M
Ω
.
•
Thermistors if fitted, should be checked for continuity
with a multimeter and never mega-tested.
•
Ensure supply voltage and frequency correspond to the
motor nameplate ratings.
•
Ensure shaft turns freely before initial start.
•
Measure stator resistance and record in Log Book.
Operation
Standard motors are designed for a 415 volt (±5% ) 3 phase,
50 Hertz supply. Use of standard motors on other supply
systems should be verified with our office prior to installation.
All units are S1 rated to AS1359 and associated standards,
for operation below 1000 metres at a maximum ambient
temperature of 40°C.
For operation in conditions other than that above please refer
to your nearest CMG office.
Electric motor starting imposes severe thermal stress on the
motor, the frequency of starting should be minimized to
ensure optimum machine life.
Number of starts per hour
The number of starts per
hour is dependant on the
inertia of the driven load
and the load torque
demand. When high inertia
load is applied (flywheel,
heavy fan etc) please refer
to your nearest CMG office
for advice. A guide to
generally acceptable starts
per hour would be as per
table.
For greater number of
starts per hour, please
contact your nearest CMG
office for advice.
Permitted starting time
In respect to the
temperature rise
of the motor,
starting time (i.e.,
from rest to
operational
speed) should not
exceed the time
indicated in the
following table.
Motor must be
allowed to cool
prior to each start.
Starts per hour
Frame 2 pole 4 pole 6 pole 8 pole
71 - 40 - -
80 20 40 40 -
90 16 30 40 -
100 16 30 40 40
112 16 30 40 40
132 10 20 25 25
160 10 20 25 25
180 8 15 20 20
200 6 12 12 12
225 5 10 10 10
250
4 8 8 8
280
3 6 6 6
315
3 4 4 4
Maximum starting time [sec]
Frame
Starting
method
2 pole 4 pole 6 pole 8 pole
71
D.O.L. -
26 -
-
80
D.O.L.
15 26 40 -
90
D.O.L.
10 15 25 -
100 D.O.L.
12 13 18 40
112 D.O.L.
10 10 18 35
132 D.O.L.
14 12 12 25
160-355
D.O.L.
15 15 20 20
160-355
star-delta
45 45 60 60
Goodnal STP ST041 Disinfection & Outfall (KSB ATF Feed Pump Skid PU-0700-110
Q-Pulse Id VM405
Active 29/10/2013
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