Dresser Pacific Pumps DS Operating And Maintenance Instructions Manual

L.

DS

OPERATING AND MAINTENANCE INSTRUCTIONS

Manual No. 1100.5

PACIFIC PUMPS DIVISION 0 DRESSER INDUSTRIES INC 0 HUNTINGTON PARK, CALIF

CONTENTS

(100-D49896)

Operating and Maintenance Instructions

Type "DS"

Section 1- Installation
Section 2 - Operation
Section 3 - Troubleshooting Information
Section 4 - Maintenance

PARTS ORDERING AND SERVICING INFORMATION

Parts List

PRODUCT ENGINEERING DRAWINGS

Outline 300-D49896

Seal Flush Piping - Series 2 400-D49896
Assembly 500-D49896
Seal Assembly 515-D49896

TABLE OF CONTENTS

SECTION I — INSTALLATION

Location of Pump

A.
B.

Foundation
Leveling Baseplate

C.
D.

Grouting

E.

Installing Driver on Baseplate

F.

Alignment of Pump and Driver at the Factory

G.

Aligning Pump and Driver by User

H.

Piping

I.

Suction Piping

J.

Discharge Piping
Piping for Spare Pumps

K.
L Auxiliary Piping
M.

Stuffing Boxes
Connecting Pump and Driver

N.

SECTION II — OPERATION

Page

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2

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2

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2

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3

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3

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5

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6

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6

Preparation for Operation

A.
B.

Starting
Operating at Reduced Capacity

C.
D.

Operating Routine

E.

Stopping

SECTION III — TROUBLE SHOOTING INFORMATION

A.

No Discharge

B.

Insufficient Discharge

C.

Insufficient Pressure

D.

Cavitation and Noise

E.

Pump Loses Suction After Starting
Excessive Power Consumption

F.

Bearings Overheat

G.
H.

Vibration

SECTION IV — MAINTENANCE

A.

Disassembly

B.

Inspection and Repair

C.

Reassembly

D.

Parts Ordering

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8
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8
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10
12

TYPICAL CROSS-SECTION

(Drawings are provided giving particular details of
each pump purchased.)

.0.

,

Areetracanmaketmorle

ketVW.S.C.CICRA

_ _VOW

Neo.

• .

BAK Of PART

03

1

Pul. SHAFT

COUPLING

FLEXISLE

7

DEFLECTOR RING

PACKING HOUSING BASKET

22
25

WELLER KEY

34

MOELLER

37

CASE

SALL BEARING-RADIAL

II

SEARING HOUSING COVER - INNER - THRUST

42
43

BALL BEARING ADAPTER - RADIAL

SAGE

47

48

STATIONARY OIL BAFFLE
AS PACKING GLAND
TO

PACKING
T I

LANTERN RING

SHAFT SLEEVE

72
74

JuNK RING

SHAFT SLEEVE SEAL RING

117

PACKING

15

PACKING HOUSING - THRuST

06

7

OILING RING

1

3

HOUSING

-

RADIAL

SALL BEARING - THRuST

135
!SA

111ALL BEARING THRUST COLLAR

13?

LOCKNUT II WASHER - RADIAL

165

FLEXIBLE COUPLING KEY

200

IMPELLER WEARING RING
BEARING HOUSING

209

BEARING HOUSING COVER - OUTER - RADIAL

211

BEARING MUSING COVER - OUTER - THRUST

212

SHAFT SLEEVE COMPR NUT - RADIAL

215

CASE WEARING RING

224

IMPELLER LOCKNUT - RADIAL

238
259

SALL BEARING SPACER RING

LOCKNUT 11 WASHER - THRUST

2110
SI?

SHAFT SLEEVE COMP*

439

SHAFT SLEEVE KEY
STATIONARY OIL BAFFLE - OUTER - RADIAL

552

IMPELLER LOCKNUT - THRUST

678

PACKING GLAND UNER

1021

BEARING HOUSING COVER - INNER - RADIAL

I 0711

Nur -

THRUST

DS-2

PACKING DETAIL

PAC

LI.F$

Ir.

1960

CICT.

IC

PUMPS

ASSEMBLY

.rg

INC

--

"

nog

Ds

1- SO

SECTION I

INSTALLATION

A. LOCATION OF PUMP

The pump should be located as near to the liquid source

1.

as possible.

Head room should be provided for the use of hoisting

2.

equipment.

The unit should be accessible for inspection during

3.
operation.

It is necessary for satisfactory operation that sufficient

4.
net positive suction head (NPSH) be available at the pump
suction flange. (Net positive suction head is the total head

in feet absolute, determined at the suction nozzle and re­ferred to datum, less the vapor pressure of the liquid in
feet absolute.)

B. FOUNDATION (See Fig. 1)

Concrete foundations built on solid ground are the most
satisfactory. Foundation bolts of the specified size should
be located as shown on the foundation drawing. It is rec­ommended that each bolt be fitted with a pipe sleeve ap-

proximately three diameters larger than the bolt and with a
washer to support the head of the bolt in the sleeve. After
the concrete is poured, the pipe sleeves remain in place while
the bolts may be shifted for alignment with the holes in
the baseplate.

C. LEVELING BASEPLATE (See Fig. 2)

I. Locate leveling plates and shims on both sides of each

foundation bolt and in the center at the pump end of the
baseplate. Allow a minimum of one inch between the base­plate and the foundation for grouting.

2.

Level baseplate across driver pads using shims at the

foundation bolts on the driver end.

3.

Level baseplate across pump pads using shims at the

foundation bolts on the pump end.

4.

Level baseplate lengthwise using shims at the center on

the pump end.

Tighten nuts on the foundation bolts evenly but not too

5.
firmly.

Fig. 1

Foundation Bolts

Fig.

2

Leveling Baseplate

1

GROUTING

D.

• Build forms to confine the grout. The forms must be

securely anchored and shored.

Remove water and waste material from foundation bolt

2.
holes and clean off and dampen the foundation slab.

the motor shaft from touching

This will prevent overheating or damage to the motor
heari ngs.

Check alignment with a straight edge across the coup-

5.
lings. The driver will be 3116 inch low before shimming.

the motor bearing faces.

3.

Pour grout through holes provided in the baseplate.

A recommended grout mixture in one part iron base aggre­gate. one part Portland cement and one part coarse, clean
sand by weight. Approximately 13/4 to 2 gallons of clean
water is required for each 100 pounds of mix. Use sufficient

water to make the mix placeable.

4.

Remove air pockets by working and rodding the grout

through holes in the baseplate.

After grout is set, tighten nuts on the foundation bolts.

5.
Do not remove leveling plates and shims.

E. INSTALLING DRIVER ON BASEPLATE

I. If a motor with sleeve bearings is to be used, it must be
mounted so that there is at least 1/8 inch clearance between
the thrust collars on the motor shaft and the face of the

bearings. The following procedure is usually recommended
when the pump is connected directly to the motor:

Measure the total lateral movement of the motor

a.

rotor.

It

should be approximately 1/2 inch.

Pull the rotor all the way forward toward the pump.

b.

Move the rotor 1/8 inch back from the full forward

c.

position.

2. Adjust the position of the driver so that the distance be­tween the pump and driver shaft agrees with the callout on
the foundation drawing.

3. The various coupling types and their uses are as follows:
Limited axial end float spacer type coupling, between

a.

pump and electric motor with sleeve bearings.

b.

Standard spacer type coupling between pump and
steam turbine, between pump and fluid drive, or between
pump and electric motor with ball bearings.

F. ALIGNMENT OF DRIVERS MOUNTED AT FACTORY

It is always necessary to check, and correct if necessary, the
alignment of the pump and driver shafts after the base has
been grouted in at its permanent installation.This alignment
check must .be performed even though the pump and driver
may have been mounted and aligned at the factory prior to
shipment. The principal reasons for checking alignment

after installation are as follows:

a.

Distortion of the base may have occurred as a result

of handling during shipment or unloading.

b.

It is impractical to level base plates at the installation

site as precisely as they are leveled at the factory when the

drivers are mounted and aligned. Thus, minor distortion of

the baseplate will occur when it is bolted to the foundation,

which in turn will produce some misalignment.

The factory alignment of pumps is made without

c.
piping loads imposed upon the inlet and discharge connec­tions. When installation is complete an alignment adjustment
is required to compensate for strain in the pump and bed

plate caused by loads transnitted from the user's piping
system.

Factory alignment of pumps is performed at an aver-

d.
age temperature of 75°F (24°C). Operation of pumps at less
than or greater than this temperature causes alignment

change due to thermal affects on pump pedestal position.
Final alignment should be made with pumps

operating temperature.

G. ALIGNING PUMP AND DRIVER BY USER (See Fig. 3)
I. Clamp a dial indicator on the driver half coupling. The

indicator bracket must be rigid to insure accuracy of the
dial indicator readings.

Set the indicator button on the outside diameter of the

2.
pump coupling hub and align the hubs to within .002 inch
total indicating reading.

at

the actual

Limited axial end float standard type coupling, be-

c.

tween fluid drive and electric motor.

4. A spacer type coupling next
pump half coupling to be removed or installed without dis­turbing the position of the pump or driver. The thrust bear­ing on the pump or fluid drive will prevent thrust collars on

to the pump

permits the

Set the indicator button on the face of the hub and

3.

align the faces parallel at all points.

To check alignment, clamp the dial indicator to the

4.
pump half coupling and take readings on the outside dia­meter and the face of the driver coupling hub.

2

NOTE: If a

alignment should be made with the turbine hot. If align­ment is made with the turbine cold, the turbine should be
set low by the distrance specified by the turbine manufac­turer. A suggested turbine setting is .008 inch low, or .016
inch total indicator reading.

steam turbine is used and is foot mounted,

Fig. 3

Aligning Pump and Driver

5. Scribe, drill and tap holes in

driver hold down bolts. Install the hold down bolts and draw
up snugly, then re-check alignment.

H.

PIPING

I.

Both suction and discharge piping should be as short and
direct as possible. There should be a minimum of bends and
fittings and the bends should be made with a long radius,

when possthle.

2.

Piping should be adequately supported near the pump to •
prevent strains being transmitted to the pump when tighten­ing the flange bolts.

3.

Pipes at the suction and discharge nozzles should

larger or larger than the openings in the pump.
I. SUCTION PIPING (See Fig.s 5 through 7)

1.

Suction lines must be free from pockets or high spots in

which gas or vapors may be entrapped.

2.

In horizontal lines leading to the pump, only eccentric

reducers should be used.

the driver pads for the

be

as

Standard Spacer Type Coupling

Ar"

,

Limited Axial End Float Coupling Spacer Type

VAPOR POCKET

L --1

INCOR RECT

CORRECT

3

VA PO R POC KET

VAPOR POCKE T

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