Instalation and Leveling

Question 1

A baseplate provides a ridged and _______ structure which enables the machine units to be aligned during operations

Answer 1

Level

Question 2

The primary unit is also referred to as the ________ unit. Usually installed first.

Answer 2

Driven

Question 3

Prime movers are all referred to as ________ .

Answer 3

Drives or drivers

Question 4

A benchmark is a reasonably permanent character and are used as _________ ________ in surveying and by the millwrights.

Answer 4

Reference points

Question 5

Datum points are known points from which any ______ or scale starts.

Answer 5

Measuring

Question 6

Primary equipment is installed first then transmission units and finally _________ units.

Answer 6

Drive units

Question 7

Basic installation, alignment, and testing takes place in this order:

Prepare machine and mounting surface

Move equipment into place and prepare it

Set primary unit

________________

________________

Lubricate, power and test equipment

Answer 7

Set transmission unit (gearbox)

Set primary mover unit (motor)

Question 8

When mounting on structural steel what thickness should the metal be?

Answer 8

Thickness of metal base should be equal to or greater than the thickness of the unit feet

Question 9

Vibration isolators have 2 functions:

Prevent machine vibrations from being transmitted to adjacent equipment

And

____________________

Answer 9

To prevent the amplification of internal stresses which cause misalignment and wear of machine elements

Question 10

What is the general rule of thumb for the amount of concrete needed to support a machine?

Answer 10

2.5 times the mass of whatever sits on top of it

Question 11

The foundation is usually constructed with a minus elevation of 19mm to 38mm(3/4to1 1/2)

True or false

Answer 11

True

Question 12

A basic way to minimize and prevent vibration transfer is to use large well designed foundations. The foundation may be isolated from the floor with dead airspace or vibration insulators such as cork or felt.

True or false

Answer 12

True

Question 13

Straight anchor bolts without deformed ends should be set to a depth of ________ times their diameter.

Answer 13

25

Question 14

The length of the bent end on a anchor bolt should be _______ times the bolt diameter.

Answer 14

4

Question 15

In situations of severe vibration a __________ anchor bolt system should be used.

Answer 15

Boxed

Question 16

Two types of expansion anchors commonly used are:

Stud type

And

___________

Answer 16

Drop in

Question 17

When setting the height of an anchor bolt what must be considered?

Thickness of the baseplate

_________________

Grout

Washers

1 or two nuts

Answer 17

Shimming

Question 18

What are bolts typically torqued to?

Answer 18

2/3 their yield strength

Question 19

One method of preserving reference lines is to us a ________ plug and grouted. The lines can be prick punched into them.

Answer 19

Brass

Question 20

Establishing _________ lines and points is the first step in any installation alignment procedure.

Answer 20

Reference

Question 21

The two methods of establishing reference lines square to each other are the Swing arc method and the _________ method.

Answer 21

3-4-5

Question 22

Why would you hang plum bob in a pail of oil?

Answer 22

To dampen and oscillations caused by air currents

Question 23

Baseplates may be set on foundations with or without machinery units attached. Soul plates are alway set ___________ machinery units attached?

Answer 23

Without

Question 24

Why do jacking screws and bolts get removed after grout has cured?

Answer 24

Ensures that the baseplate is supported by the grout and shims

Question 25

It is not recommended to stack more than 3/8’s thick when using 1/8” spacers.

True or false

Answer 25

True stick to as little shims as possible. Typically 3 and max 4

Question 26

When levelling a machine you set the elevation to the ____________ point

Answer 26

Highest

Raise all the lower points up

Question 27

Formula for calculating thickness of adjustment shims needed?

Not the same formula as rim and face

Answer 27

A = T x (L1/L2)

A = shim adjustment required

T = thickness of feel blades

L1 = bolt hole centre to centre

L2 = length of level

Question 28

Always torque anchor bolts to ______% of their torque before checking level.

Answer 28

50

Question 29

Construction lasers are only good for rough millwright work. It is only accurate to +/- ______ of an inch, while a precision rotating laser is accurate to ________ of an inch over a 10m distance

Answer 29

3/16”

.01mm or .0004”

Question 30

Two types of grouts used are:

Cementitious - Portland based

And

_______________

Answer 30

Polymeric grout filler -epoxy or polyurethanes

Question 31

Advantages of polymeric grouts are moisture insensitive, resistant to corrosion impact vibration and chemicals, and have high ________ strengths

Answer 31

Compressive

Question 32

Before placing grout you must:

Answer 32

Clean off all dirt, oil or grease and loose materials

Roughen the surface

Make sure the area is above 5 degrees C. Must be heated if not with the exception of urethane grout which can be place at temps as low as -10c

When using cementitious grout the surface must be wet but no standing water

Question 33

Grout has attained full strength in _______ days and can be torqued to full value.

Answer 33

3-7 days