Siemens 580, SH400, SH560, SH450, 500 User Manual

Installation

Induction Motors/

Operation
Maintenance

Generators

Horizontal – Medallion



500, 580, 880, SH400, SH450, SH560 Frames
TEFC Enclosures

Type CZ, NCZ, CGZ, 1LA4

ANIM-03522-0612
(New Issue)
©2012 Siemens Industry, Inc. All rights reserved.

Table of Contents

Page Page
TABLE OF CONTENTS 1 OPERATION 11
SAFETY PROCEDURES 2
INTRODUCTION 3

Warranty 3 Normal Operation 11
Receiving 3 Voltage/Frequency Variation 11
Handling 4 Trouble Shooting 12
Temporary Storage 4
Type Designations 4 Preventive Maintenance 14

INSTALLATION 5
Motor Dimensions

Location 5 Corrective Maintenance 16
Foundation 5 Rotor Cleaning 17
Mounting 5 Stator Cleaning 17
Coupling of Sleeve Bearing Motors 5 Insulation Resistance 17
External Wiring 6 Drying Insulation 17
Changing Direction of Rotation 6 Bearings 18
Alignment 6 Bearing Lubrication 21
Hot Alignment 8 Bearing Replacement 22
Vibration 8
Doweling 9 Identification 26
Force Feed Lubrication 9
Oil Mist Purge 9
Typical Motor Control Settings 10

5 Hazardous Location 15

Note - These instructions do not purport to cover all details or variations in equipment, nor to provide for every
possible contingency to be met in connection with installation, operation or maintenance. Should further
information be desired or should particular problems arise which are not covered sufficiently for the user’s
purposes, the matter should be referred to;

1. Your local Siemens Sales Office.

--Or--

2. Siemens Technical Support Communication Center:
Inside the U.S.: 1-800-333-7421
Outside the U.S.: [phone]
Online: www.usa.siemens.com/services

Initial Start 11
Oil Circulating Systems 11

MAINTENANCE 14
Inspection 15

SPARE PARTS 26
MOTOR SERVICE RECORD 31

VIBRATION ANALYSIS SHEET 32
NOTES 33

The contents of this instruction manual shall not become part of or modify any prior or existing agreement,
commitment or relationship. The sales contract contains the entire obligation of Siemens. The warranty
contained in the contract between the parties is the sole warranty of Siemens. Any statements contained herein
do not create new warranties or modify the existing warranty.

Siemens machines are built in accordance with the latest applicable revision of the National Electric Code,
Underwriters Laboratories Standards and Procedures, and NEMA (National Electrical Manufacturers Association)
Standards. These publications and this instruction manual should be thoroughly read and understood prior to
beginning any work on this equipment.

The information contained within is intended to assist operating personnel by providing information on the general
characteristics of the purchased equipment. It does not relieve the user of the responsibility of using accepted
engineering practices in the installation, operation and maintenance of this equipment.

Should a conflict arise between the general information in this manual and the contents of the drawings and
supplementary material, the latter shall take precedence.

The illustrations in this book show typical machines. Special features deviate from those pictured.

- 1 -

Safety Procedures

This equipment contains hazardous voltages. Death,
serious personal injury or property damage can result
if safety instructions are not followed.

The successful and safe operation of motors and
generators is dependent upon proper handling,
installation, operation and maintenance, as well as
upon proper design and manufacture. Failure to
follow certain fundamental installation and
maintenance requirements may lead to personal injury
and the failure and loss of the motor as well as
damage to other property.

Only qualified personnel should work on or around
this equipment after becoming thoroughly familiar with
all warnings, safety notices and maintenance
procedures contained herein. Only qualified
personnel should be involved in the inspection,
maintenance and repair procedure and all plant safety
procedures must be observed.

Qualified Person: For the purpose of this manual
and product labels, a Qualified person is one who is
familiar with the installation, construction and
operation of the equipment, and the hazards involved.
In addition, he or she has the following qualifications:

a. Is trained and authorized to energize, de-energize,

clear, ground and tag circuits and equipment in
accordance with established safety practices.

b. Is trained in the proper care and use of protective

equipment, such as rubber gloves, hard hat,
safety glasses, face shields, flash clothing, etc., in
accordance with established safety practices.

c. Is trained in rendering first aid.
Danger: For the purpose of this manual and product

labels, Danger indicates an imminently hazardous
situation which, if not avoided, will result in death or
serious injury.

Warning: For the purpose of this manual and product
labels, Warning indicates a potentially hazardous
situation which, if not avoided, may result in minor or
moderate injury.

Caution: For the purpose of this manual and product
labels, Caution indicates a potentially hazardous
situation which, if not avoided, may result in minor or
moderate injury. It is also used to alert against unsafe
practices.

Motors should be installed and grounded per local and
national codes.

Do not operate this equipment in excess of the values
given on nameplate or contrary to the instructions
contained in this manual. The equipment (or a
prototype) has been factory tested and found
satisfactory for the condition for which it was sold.
Operating in excess of these conditions can cause
stresses and strains beyond design limitations.
Failure to heed this warning may result in equipment
damage and possible personal injury.

DANGER

Hazardous voltage.

Will cause death, serious injury,
electrocution or property damage.

Disconnect all power before working on
this equipment.

NOTE

Squirrel cage induction machines can be driven by
various types of prime movers. These will act as induction
generators. This instruction manual applies to both motors
and induction generators. However, for clarity reasons,
the machine will be referred to as a “motor”.

- 2 -

Introduction

DANGER

Hazardous voltage.

Will cause death, serious injury,
electrocution or property damage.

Disconnect all power before working on
this equipment.

These instructions present general recommendations
for installation, operation and maintenance of
induction motors built at the Norwood plant. If
additional information is required, contact Siemens
Industry.

Warranty

See your sales contract for warranty coverage.
Documentation of storage maintenance, alignment
and regreasing may be required for certain warranty
considerations.

Receiving

Motors are shipped in first class condition. They have
been inspected and are skidded to prevent damage
from ordinary handling during shipment.

Inspect new motors for shipping invoice. Make the
examination before removing from cars or trucks. If
damage or indication of rough handling is evident, file
a claim with the carrier at once, and notify your
Siemens sales representative.

Remove only the shipping invoice. Do not remove
tags pertaining to lubrication, operation and storage
instructions. Read and follow all instructions to insure
that no damage to motor bearings, (due to
condensation) and motor windings occurs during
storage.

Use care in handling. Dropping the motor or
otherwise imposing shock loads can cause unseen
and undetected damage to bearings. This damage
such as false brinelling of the races of anti-friction
bearings can result in early bearing failure.

If supplied, energize space heaters to help prevent
condensation within the motor enclosure.

Motors having sleeve bearings or oil lubricated
antifriction bearings are shipped WITHOUT OIL in the
bearing reservoir. These bearings and journal
surfaces are protected during shipment by a

temporary film of rust inhibiting oil or, when a motor is
supplied specifically with “provisions for oil mist
lubrication” (oil supply system furnished by the user),
the motor is shipped from the factory with grease in
the bearings.

When receiving a motor with sleeve bearings:

1. Remove shaft blocking materials.

2. Visually inspect bearing condition through sight
glass and bearing drain opening.

3. Check for moisture accumulation. Remove any
traces of oxidation before putting the motor into
service.

4. Fill bearing reservoirs to normal level with a high
grade industrial lubricating oil. See Maintenance
Section of this instruction book to determine
proper oil level.

5. Rotate the shaft a minimum of 10 complete turns
by hand to distribute oil over bearing parts. Make
sure the oil rings in each bearing rotate freely.

When receiving a motor with grease lubricated
anti-friction bearings:

Motors having grease lubricated antifriction bearings
are shipped with the bearings already lubricated and
ready for operation.

If the elapsed time from the time of shipment to the
time in which the unit is to be started is in excess of
three (3) months, regrease per the lubrication plate
mounted on the motor.

When receiving a motor with oil mist lubricated
anti-friction bearings:

1. Be sure that the motor is not stored outdoors.

2. Be sure that the oil mist lubrication is connected
and operating before starting the motor.

3. The oil mist lubrication should be in operation
within two weeks after the motor is received from
the factory.

When receiving a motor with “provisions for oil
mist lubrication”:

1. Leave the grease in the bearings if the motor is to
be stored.

2. Before operating the motor with oil mist
lubrication, disassemble the motor, and clean the
grease from bearings, end caps, and the bearing
housing cavities with a suitable solvent.

- 3 -

Introduction

WARNING

Heavy equipment.

Improper handling may cause death, serious injury or
property damage.

Check lifting devices before lifting. Use proper slings,
chains and spreaders.

Note any warning plates on motor and follow
instructions on each plate.

Handling

Lifting devices are provided for handling only. An
experienced rigger should be used to install motors.

To avoid damage, the use of spreader bars is
recommended on other than single point lifts. Lifting
devices are provided to facilitate handling with
shackles and cables. Avoid pounding or bumping
shaft, coupling or bearing parts, as shocks may
damage bearings.

NOTE WEIGHT BEFORE LIFTING. The weight is
indicated on the outline drawing. Apply tension
gradually to cables. Do not jerk or attempt to move the
unit suddenly.

Motor Weights (in pounds)

Frame Size Minimum Maximum

500 3300 5300
580

880
SH400 8200 9900
SH450 11500 13700
SH560 18078 22267

4600

15800

6700

19700

Temporary Storage

If the equipment is not to be installed and operated
soon after arrival, store it in a clean, dry, well­ventilated place, free from vibration and rapid or wide
variations in temperature. Rotate the shaft a minimum
of 10 complete turns by hand each month to coat the
bearings with lubricant which will retard oxidation or
corrosion, and prevent possible false brinelling. If drain
plugs are provided in enclosed motors, they must be
removed periodically to drain any water accumulation
from the motor. Consider a unit in storage when:

1. It has been delivered to the job site and is awaiting
installation.

2. It has been installed but operation is delayed over
30 days pending completion of plant construction.

3. There are long (30 day) periods between operating
cycles.

4. The plant (or department) is shut down for 30 days.

NOTE

Storage requirements vary, depending on the length of
storage and the climate. For storage periods of three
months or longer or climate variations, consult Siemens
Storage Recommendations ANIM-03114. Storage
maintenance is to be documented for warranty
information.

Type Designations

The motor type designation consists of a basic letter or
letters indicating the motor enclosure type to which
other letters may be added denoting modifications.

Motor Type Motor Enclosure

CZ, NCZ, CGZ, or

1LA4

Totally-Enclosed Fan Cooled

- 4 -

Installation
Motor Dimensions

For motors built in the frame sizes covered by this
manual, the letter dimensions have the same
definitions as established NEMA standards.
Established dimensions for these frames may be found
on catalog sheets or certified drawings.

CAUTION

Damp Location.

Can cause property damage if equipment is operated
intermittently.

Use space heaters to prevent dampness. Grease
machine fits when unit is reassembled to prevent
corrosion.

Location

Before pouring, locate foundation bolts by use of
template frame and provide secure anchorage (not
rigid). It is recommended that a fabricated steel base
be used between motor feet and foundation. See
certified drawings of motor, base, and driven unit for
exact location of foundation bolts. Allow for grouting
base when pouring. Cast the base footpads level and
in the same plane.

Mounting

Mount the motor base (if used) on foundation or other
support. Shim as required to level. Use laser or spirit
level (check two directions at 90
will be in one plane (base not warped) when base
bolts are tightened. Set motor on the base, install nuts
and tighten.

DO NOT TIGHTEN UNTIL AFTER ALIGNMENT.

o

) to insure motor feet

Select a location for the motor and driven unit that will:

1. Be clean, dry, well ventilated, properly drained, and
provide accessibility for inspection, lubrication and
maintenance.

2. Provide adequate space for motor removal without
shifting the driven unit.

3. Permit the motor to safely deliver adequate power.
Temperature rise of a standard motor is based on
operation at an altitude not higher than 3,300 feet
above sea level.

4. Avoid condensation of moisture in bearings and on
windings. Motors should not be stored or operated
in areas subject to rapid temperature changes
unless motors are energized or protected with
space heaters.

Foundation

Concrete (reinforced as required) makes the best
foundation, particularly for large motors and driven
units. In sufficient mass it provides rigid support that
minimizes deflection and vibration. It may be located
on soil, structural steel, or building floors provided the
total weight (motor, driven unit, foundation) does not
exceed the allowable bearing load of the support.

Allowable bearing loads of structural steel and floors
can be obtained from engineering handbooks. Building
codes of local communities give the recommended
allowable bearing loads for different types of soil. For
rough calculation the foundation should be
approximately 2-1/2 times total unit weight.

NOTE

Experience has shown that any base-mounted
assemblies of motor and driven units temporarily aligned
at the factory may twist during shipment. Therefore,
alignment must be checked after mounting.
Realignment is to be documented for warranty
information.

Coupling of Sleeve Bearing Motors

Sleeve bearings cannot withstand externally generated
axial thrust. Antifriction bearings are normally
designed to handle a minimum thrust. As the motor
and driven equipment get hot they may expand
towards each other and with the wrong coupling this
could produce an axial force. Therefore, the selection
of coupling is of extreme importance. If properly
installed, the following types of couplings are
considered to be free from the development of axial
thrust and may be used:

1. Laminated Metal Disk Type

2. Rubber Biscuit Type (Designed for the Speed)
Limited end float models of the following types are

available from several coupling manufacturers and
may be used by selecting the proper end float (See
“End Float – Sleeve Bearings” under Bearing
Replacement)

3. Pin and Bushing Type

4. Gear Type

- 5 -

Installation
External Wiring

Hazardous voltage.

Will cause death, serious injury,
electrocution or property damage.

Disconnect all power before working on
this equipment.

DANGER

Frame

500

580

SH400

SH560

Motor Fan Direction

Motor Speed

3600 – 3000

RPM

1800 – 1500

RPM

NON-DIRECTIONAL

1200 RPM &

SLOWER

NOTE

Before running motor, see Initial Start.

Starting and overload control devices must be matched
to motor rating. For safety or convenience they may
need to be installed some distance from the motor.
Follow the control manufacturer’s instructions to make
proper installations and connections. Observe the
following:

1. Connect electrical power supply to conform with
National Electric Code and any local regulations.
Line voltage and wire capacity must match motor
rating stamped on the nameplate.

2. With the driven equipment disconnected,
momentarily energize the motor to check rotation.

3. If motor is three-phase type, reverse rotation (if
required) by interchanging any two of the three
power leads.

Changing Direction of Rotation

Look for rotation plates usually mounted on fan
housing of the motor.

CAUTION

Excessive heat.

Motor may overheat if motor cooling fans run in the
wrong direction.

Run motor in direction shown on motor or change fans.

External fan direction must be considered if changing
direction of rotation is contemplated on motors
equipped with shaft mounted external fans. See the
following Motor Fan Direction table to identify which
motors have directional external fans. All directional
fans must be replaced with a fan designed for the
desired direction of rotation.

880

DIRECTIONAL

SH450

NOTE

It will be necessary to rebalance the rotor if the fans are
changed.

Alignment

Accurate shaft alignment between motor and driven
equipment is essential. Improper alignment may result
in vibration, bearing overloads and excessive shaft
stresses. Flexible couplings will not compensate for
excessive misalignment.

NOTE

A basic rule is to not have more than five shims in a shim
pack under any one motor foot. Thick shim packs
consisting of many thin shims will cause soft foot,
excessive vibration or twisted frame (motor foot out of
plane).

Parallel Alignment

After positioning unit for correct end float, separate the
coupling halves and mount a dial indicator rigidly on
one coupling half with the button on the cylindrical
surface of the other half. Rotate the shafts together,
and take readings at top, bottom and side positions.
Align shaft so difference between top and bottom
readings and the side readings is a maximum of

0.002 inch for a flexible coupling.

- 6 -

Installation

Angular Alignment

Hold each shaft at maximum end float. Rotate both
shafts together, and measure between matching points
at the outside diameter of the coupling faces for the
top, bottom and both sides. Use two indicators
because of possible axial shaft movement. Read
difference of variation between them.

Align shafts so that the total indicator variation does
not exceed 0.002 inch. (See Figure 1.)

NOTE

If vibration levels increase cold to hot, alignment should
be checked hot to verify that motor and driven equipment
are properly aligned at operating temperature. Adjust if
necessary.

Figure 1. Diagrams Showing Parallel and

Angular Misalignment

Foot Plane

The proper foot plane exists when adequate shims
have been installed to assure equal pressure on each
foot or corner of motor when the mounting bolts are
loose.

To determine proper foot plane:

1. Mount dial indicator on shaft to be checked so that
contact will rest on either the adjacent shaft or a
bracket from the foundation or base.

2. With mounting bolts tight and indicator set at zero,
release one bolt at the shaft extension end of the
unit and check indicator for a maximum change
of 0.001 inch.

3. If no change is indicated, retighten the bolt and
repeat the process for each of the remaining three
mounting bolts.

4. If a change is indicated, add shims under motor
foot and retighten until indicator movement is
reduced or eliminated.

NOTE

1. The foot plane is of concern for each unit of rotating
equipment. Check driven equipment if necessary.

2. Base or foundation rigidity can also affect vibration;
check for resonance in supporting structure.

3. Recheck alignment after any change in shims and
document alignment readings for warranty
information.

V-Belts

Check belt manufacturer’s recommendations for
maximum speed of sheaves and belts, minimum pitch
diameters, maximum allowable number of belts and
maximum sheave width.

When motor is ordered for V-belt drive, check motor
outline for motor manufacturer’s limits on belt pull,
sheave distance from motor, and sheave diameter.

Use only matched-belt sets. V-grooves must be in line;
sheaves must be parallel and axially aligned. Belts
must enter and leave sheaves with no side bending.
For long bearing life, the belt tension is important;
consult belt manufacturer for proper tension to suit
drive. Protect belts from grease and oil. NEVER use
belt dressing.

- 7 -

Installation
Hot Alignment

Vibration

It is possible for the motor shaft height to change
relative to the driven equipment and this should be
compensated for during the alignment procedure.
Heat from driven equipment can also cause horizontal
misalignment.

WARNING

Rotating parts.

Can cause serious injury.
Disconnect and lock out power before working on

equipment.

If motor application is abnormal (high temperature,
extreme vibration, etc.) consult the factory for special
instructions or additional information.

Check for vertical alignment (parallelism) of coupled
drive as follows:

1. Operate unit until normal temperature is reached
(may require several hours).

2. Shut down motor and lock out switch.

3. Mount dial indicator as in Figure 2.

4. Rotate shaft, noting readings at 0°, 90°, 180°, and
270° (both sides, top, and bottom). If within 0.002
inch total indicator reading, or other limit specified
by the factory, unit is satisfactory for operation.

5. If not within limits, add or remove shims as
required to raise or lower motor.

6. If shims are changed for high temperature
operation, repeat alignment procedure to extent
necessary to assure proper alignment. Document
readings for warranty information.

Figure 2. Check of Vertical Alignment

The standard unfiltered housing vibration limits
measured at no load, uncoupled, and with rigid
mounting are as follows based on the requirements of
NEMA MG1-7.8.

Speed Velocity, inches/sec peak

1200 – 3600 RPM 0.120

1000 RPM 0.105

900 RPM 0.096
750 RPM 0.079
720 RPM 0.075
600 RPM 0.063

After alignment is complete and foot mounting bolts are
tight, run motor at no load (or minimum possible).
Check for vibration. If excessive vibration exists and
the alignment is acceptable, check foot plane by
loosening one drive end-mounting bolt at a time as
detailed below. This is to be documented for warranty
information. When resiliently mounted, allowed levels
are 25% higher.

Base or foundation rigidity can also affect vibration;
check for resonance in supporting structure.

Recheck alignment after any change in shims and
document alignment readings for warranty information.

Completing Mechanical Installation

After controlling rotor end float and establishing
accurate alignment, it is recommended to drill and
ream the foundation plate and motor feet together for
dowel pins. (See Doweling).

Recheck parallel and angular alignment before bolting
the coupling together. Motor shaft should be level
within 0.03 inch after alignment.

- 8 -

Installation
Doweling

Doweling the motor (and driven unit) acco mplishes the
following:

1. Restricts movement.

2. Eases realignment if motor is removed from base.

3. Temporarily restrains the motor, should mounting
bolts loosen.

Inserting Dowel Pins

The following procedure is recommended:
a. Check the alignment after the unit has been in

operation approximately one week. Correct as
necessary.

b. Using pre-drilled dowel holes in motor feet as

guides, drill into the mounting base.

c. Ream holes in the feet and base to the proper

diameter for tapered dowel pins. Clean out the
chips.

d. Insert dowel pins.

Force Feed Lubrication

If force feed lubrication is used, flush lubrication lines
thoroughly to make sure the lines are clean before
connecting lines to bearing housings. Be sure that
bearing cavities are filled with oil to the proper level
before starting. See motor outline drawing to
determine proper oil level. Be sure that proper oil
pressure and flow are provided by the supply system.
Verify that the oil drain flow agrees with the factory
requirements. The orientation and size of oil drain
piping supplied with the motor must not be altered. Oil
drain piping should be of the same size or larger from
the motor piping to the oil sump. Piping must slope
downward. Pressure build up in the drain line between
the oil sump and the motor bearing housing can lead to
oil leakage. Document readings for warranty
information.

Oil Mist Purge

When connecting 500/580 frame motors for oil mist
purge, it is important to note that the drive and non­drive end bearing cavities operate at different
pressures. To avoid high or low oil levels, care should
be taken when connecting the system so that cavity
pressures are maintained.

- 9 -

Installation

Typical Motor Control Settings

Winding Temperature

 Class B Insulation
 Class F Insulation

Alarm

130°C
155°C

Motor Bearing Temperature
(Thermocouple or RTD’s)

 Sleeve Bearing
 Antifriction Bearing

100°C 105°C
100°C 105°C

(2)

Ground Fault

4 Amps

Primary

Circuit

Instantaneous Overcurrent

 With ½ Cycle Delay
 Without Time Delay

1.8 times Locked Rotor Amps

2.4 times Locked Rotor Amps

Maximum Voltage 110 % of Rated Voltage 10 sec.
Minimum Voltage (the minimum voltage

also applies to starting unless otherwise
specified)

90 % of Rated Voltage 10 sec.

Maximum Frequency Deviation ±5% 10 sec.

Trip

(Shutdown)

155°C
170°C

8 Amps

(2)

Primary

Circuit

Timer Trip

Setting

(1)

(2)
(2)

0.2 sec.

(2)

Maximum of Voltage Plus Frequency Deviation ±10% 10 sec.
Maximum Voltage Unbalance
Maximum Current Unbalance

(3)

1% 15 sec.

(3)

8% 15 sec.

Suggested Vibration Limits

RPM 3600 1800 1200 900 and

Slower
Shaft (mils, pk-to-pk) 3.3 3.7 4.3 5.0
Housing (in./sec.) 0.25 0.25 0.25 0.25

(1)

Maximum time at maximum condition before control device is to operate.

(2)

Increase as necessary to avoid nuisance trips.

(3)

This is the maximum deviation from the average of the three phases.

- 10 -