Idex Wright Flow Technologies RTP Series Manuale utente

NSTALLATION

PERATION

AINTENANCE

ANUAL

ANGE OF

UMPS

INSTALLATION, OPERATION AND MAINTENANCE MANUAL

FOR RTP

ROTARY LOBE PUMPS.

1.0

SAFETY INFORMATION. 3

1.1

ISK ASSESSMENT RELATING TO THE USE OF

RIGHT

LOW

ECHNOLOGIES

IMITED

RTP

ROTARY LOBE PUMPS AND PUMP UNITS IN POTENTIALLY EXPLOSIVE ATMOSPHERES

. 6

2.0

INTRODUCTION. 7

2.1

ENERAL

. 7

2.2

RIGHT

LOW

ECHNOLOGIES

IMITED

ISTRIBUTORS

. 7

2.3

ECEIPT AND

TORAGE

. 7

2.4

LEANING

. 8

UMP

ODEL

ESIGNATION

. 8

2. .1

ATEX

NFORMATION

3.0

GENERAL. 11

3.1

RTP

UMPING

RINCIPLE

. 11

3.2

RTP

PERATING

ARAMETERS

. 12

3.3

YSTEM

ESIGN AND

NSTALLATION

. 12

3.3.2

NSTALLATION WITH

CIP

YSTEMS

. 15

3.4

TART

-U

ROCEDURE

. 16

HUTDOWN

ROCEDURE

. 17

3.6

OUTINE

AINTENANCE

–

TEX UNITS

. 17

3.6.1

DDITIONAL

OUTINE

AINTENANCE

–

TEX UNITS

. 18

3.7

EATING AND

OOLING

EVICES

3.8

NTEGRAL

RESSURE

ELIEF

ALVE

. 21

4.0

RTP

PUMP DISMANTLING AND ASSEMBLY. 23

4.1

ISASSEMBLY

. 24

4.1.1

RONT

OVER AND

OTOR

EMOVAL

4.1.2

EARBOX

ISMANTLING

4.1.3

HAFT

ISASSEMBLY

(RTP30

HOWN

). 27

4.2

SSEMBLY

. 28

4.2.1

EARBOX

OTORCASE

SSEMBLY

, 28

4.2.2

HAFT

SSEMBLY

–

RTP20 29

4.2.3

HAFT

SSEMBLY

–

RTP30 30

4.2.4

IMING

. 31

4.2.

ETTING THE ROLLING TORQUE

. 34

4.2.6

OTOR

LEARANCES

. 34

4.3

RODUCT

EAL

ITTING AND

EMOVAL

. 35

4.3.1

ENERAL

ROCEDURES FOR

NSTALLING

EALS

. 35

4.3.2

RTP20

O-

RING

EAL

EMOVAL AND INSTALLATION

(

ABOVE ORDERS

611 2). 37

4.3.2.1

RTP20

O-

RING

EAL

EMOVAL AND INSTALLATION

(

PRE

ORDERS

611 1). 39

4.3.3

RTP20

ECHANICAL

EAL

. 41

4.3.4

RTP30

LASS

YGIENIC

ECHANICAL

EAL

. 42

4.3.

RTP30

LASS

YGIENIC

ECHANICAL

EAL

. 43

4.3.6

RTP30

TANDARD

ADIAL

EAL

. 44

4.3.7

RTP30

O-

RING

EAL

. 45

SPECIFICATIONS. 46

LEARANCE

HART

ASTENERS

ORQUE

ETTINGS

. 47

UBRICANTS

. 48

OOL

IST

. 49

RTP30

OUNDATION

IMENSIONS

–

TUB

HAFT

RIVE

. 50

. .1

RTP20

AND

OUNDATION

IMENSIONS

–

ASIC

UMP

YDRAULIC

RIVE

) 51

YPICAL

ASIC

UMP

UILD

(RTP20

HOWN

) 53

ROUBLE

HOOTING

. 54

RTP

ERVICE

ISTORY

. 55

OTES

. 56

1.0 Safety Information.

INCORRECT INSTALLATION, OPERATION, OR MAINTENANCE OF

EQUIPMENT MAY CAUSE SEVERE PERSONAL INJURY OR DEATH

AND/OR EQUIPMENT DAMAGE THAT MAY INVALIDATE THE

ARRANTY.

THIS INFORMATION MUST BE READ FULLY BEFORE BEGINNING

INSTALLATION, OPERATION, OR MAINTENANCE AND MUST BE KEPT

ITH THE PUMP. ONLY SUITABLY TRAINED OR QUALIFIED PERSONS

SHOULD UNDERTAKE INSTALLATION AND MAINTENANCE.

DANGER

DO NOT OPERATE PUMP IF:

- The front cover is not installed correctly.

- Any guards are missing or incorrectly installed.

- The suction or discharge piping is not connected.

DO NOT place fingers, etc. into the pumping chamber or its connection ports

or into any part of the gearbox if there is ANY possibility of the pump shafts

being rotated. A severe injury will occur.

DO NOT exceed the pumps rated pressure, speed, and temperature, or

change the system/duty parameters from those for which the pump was

originally supplied, without confirming its suitability for the new duty. Running

the pump outside of its operations envelope can cause mechanical contact,

excessive heat and can represent a serious risk to health and safety.

Installation and operation of the pump must always comply with health and

safety regulations.

A device must be incorporated into the pump, system, or drive to prevent the

pump from exceeding its stated duty pressure. It must be suitable for both

directions of pump rotation where applicable. Do not allow the pump to

operate with a closed/blocked discharge unless a pressure relief device is

incorporated. If an integral relief valve is incorporated into the pump, do not

allow re-circulation through the relief valve for extended periods; (refer to

section 3.8).

The mounting of the pump or pump unit should be solid and stable. Pump

orientation must be considered in relation to drainage requirements. Once

mounted, shaft drive elements must be checked for correct alignment. Rotate

pump shaft by at least one full revolution to ensure smoothness of operation.

Incorrect alignment will produce excessive loading, create high temperatures

and increased noise emissions. Do not use any drive arrangements, which

cause side loading of the drive shaft. It may also be necessary to earth the

pump head to avoid the build-up of a potential charge that could cause a

spark.

The installation must allow safe routine maintenance and inspection (to

replenish lubricants, check for leakage, monitor pressures, etc.) and provide

adequate ventilation necessary to prevent overheating.

Fill all gearboxes with the recommended grades and quantities of lubricant;

(refer to section 5.3). Beware of over/under filling the gearbox as this could

cause the pump to overheat and severe mechanical damage to occur.

Before operating the pump, be sure that it and all parts of the system to which

it is connected are clean and free from debris and that all valves in the suction

and discharge pipelines are fully opened. Ensure that all piping connecting to

the pump is fully supported and correctly aligned with its relevant connections.

Misalignment and/or excess loads will cause severe pump damage. This

could result in unexpected mechanical contact in the pump head and has the

potential to be a source of ignition.

Be sure that pump rotation is correct for the desired direction of flow; (refer to

section 3.1).

Do not install the pump into a system where it will run dry (i.e. without a

supply of pumped media) unless it is equipped with a flushed shaft seal

arrangement complete with a fully operational flushing system. Mechanical

seals require a thin fluid film to lubricate the seal faces. Dry running will cause

excessive heat and seal failure

Pressure gauges/sensors are recommended, next to the pump suction and

discharge connections to monitor pressures.

Caution must be taken when lifting the pump. Suitable lifting devices should

be used as appropriate. Lifting eyes installed on the pump must only be used

to lift the pump, not pump with drive and/or baseplate. If the pump is

baseplate mounted, the base plate must be used for all lifting purposes. If

slings are used for lifting, they must be safely and securely attached. For

weights of the bare shaft, pumps refer to section 5.5.

DO NOT attempt any maintenance or disassembly of the pump or pump unit

without first ensuring that:

- The pump is fully isolated from the power source (electric, hydraulic,

pneumatic).

- The pumping chamber, pneumatic relief valve and any shaft seal

support system are depressurised and purged.

- Any temperature control devices (jackets, heat-tracing, etc.) are fully

isolated, that they are depressurised and purged, and components are

allowed to reach a safe handling temperature.

Use only genuine right Flow Technologies parts.

All certification, standards, guarantees & warranties originally supplied with

this pump will be invalidated by the use of non-genuine Service Parts.

DO NOT attempt to dismantle a pressure relief valve which has not had the

spring pressure relieved, is still connected to a pressurised gas/air supply or is

mounted on a pump that is operating. Serious personal injury or death and/or

pump damage may occur.

Use only genuine right Flow Technologies parts.

All certification, standards, guarantees & warranties originally supplied

with this pump will be invalidated by the use of non-genuine Service

Parts.

DO NOT loosen or undo the front cover, any connections to the pump, shaft

seal housings, temperature control devices, or other components, until sure

that such action will not allow the unsafe escape of any pressurised media.

Pumps and/or drives can produce sound power levels exceeding 85-dB (A)

under certain operating conditions. hen necessary, personal protection

against noise must be taken.

Avoid any contact with hot parts of pumps and/or drives, which may cause

injury. Certain operating conditions, temperature control devices (jackets,

heat-tracing, etc.), bad installation, or poor maintenance can all promote high

temperatures on pumps and/or drives.

hen cleaning, either manually or by CIP method, the operator must ensure

that a suitable procedure is used in accordance with the system requirements.

During a CIP cleaning cycle, a pump differential pressure of between 2 and 3

bar (30 to 45 psi) is recommended to ensure suitable velocities are reached

within the pump head. The exterior of the pump should be cleaned

periodically.

The surface temperature of the pump is also dependent on the temperature of

the pumped medium.

1.1 Risk assessment relating to the use of right Flow Technologies Limited RTP

rotary lobe pumps and pump units in potentially explosive atmospheres.

2.0 Introduction.

2.1 General.

RTP

rotary lobe pump is manufactured by right Flow Technologies Limited

a unit of the IDEX Corporation.

This manual includes all the necessary information for RTP

pumps and

should be read prior to beginning installation, operation, or maintenance.

Should you require any additional information regarding the RTP

pumps

contact right Flow Technologies Limited or their local authorised distributor

(refer to section 2.2).

hen asking for assistance, please provide the pump model and serial

number. This information can be obtained from the pump nameplate, which is

located on the side of the pump gearbox cover, see fig 2. Should the

nameplate be unreadable or missing, the pump serial number is also stamped

on either side of the rotorcase, see fig 3.

If the system or product characteristics are to be changed from the original

application for which the pump was selected, right Flow Technologies

Limited or their authorised distributor should be consulted to ensure the pump

is suitable for the new application.

2.2 right Flow Technologies Limited Distributors.

right Flow Technologies Limited distributes its products internationally via a

network of authorised distributors. Throughout this manual where reference is

made to right Flow Technologies Limited, service and assistance will also be

provided by any right Flow Technologies Limited authorised distributor for

RTP

pumps.

2.3 Receipt and Storage.

Upon receipt of the pump, immediately examine it for any signs of visible

damage. If any damage is noted, contact right Flow Technologies Limited or

your right Flow Technologies Limited distributor and clearly mark upon the

carriers paperwork that the goods have been received in a damaged condition,

with a brief description of the damage.

If the pump is not required for immediate installation then it should be stored

in a clean, dry environment. It is recommended that storage temperature

should be between –10°C and 40°C (14°F and 105°F).

2.4 Cleaning.

The RTP

pump series is suitable for both manual cleaning and CIP

(Cleaning In Place), refer to section 3.3.2.

The product seals are mounted directly behind the rotors and are designed

and positioned to minimise product entrapment and maximise the effects of

cleaning.

This strategic positioning of the product seals, combined with their ease of

access provides an arrangement that can be more effectively cleaned by both

manual and CIP procedures.

It is recommended that the exterior of the pump be cleaned periodically.

2.5 Pump Model Designation.

Fig 1 Designation of pump models

This information, together with the pump serial number, should be provided

when requesting additional information on the pump or when ordering spare

parts. The pump serial number is stamped on the pump nameplate and the

rotorcase, (refer to section 2.6, figs 2 and 3). For the maximum operating

pressures, temperatures and speeds refer to section 3.2.

(

)

(

)

(

)

(

)

Page 9

2.5.1 ATEX Information

ATEX Pump Requirements

Mechanical seals are a source of heat and must never be allowed to run dry.

e would recommend provision be made to ensure that there is always flow

or fluid around the pump seals. If there is a risk of the supply being

interrupted, then a temperature monitoring system must be applied to ensure

the pump does not exceed the Atex rating. The surface temperature of the

pump is dependent on the temperature of the pumped fluid and a due account

of this should be taken whilst undertaking your risk assessment of the

installation. These pumps are Atex rated T3.

Only use genuine spare parts that have been designed and verified Atex

compliant by right Flow Technologies, failure to use genuine spare parts will

invalidate the Atex certification.

Pumps that have the Atex certification will have an earthing point on the front

cover, this needs to be electrically earthed before use.

The service and maintenance intervals are increased on certified Atex units,

refer to section 3.6.1 for the required routine maintenance. Failure to maintain

the pumps to these intervals will result in the Atex certification being

invalidated.

hen installing the unit make sure so far as reasonably practicable that the

pump is aligned within 5 degrees to the horizontal – failure to align the unit

could adversely affect the gearbox lubrication and could cause heat to build

up.

It is the end user’s responsibility to ensure that the Atex rating of the

equipment supplied meets the requirements of the installation.

2.5.2 Equipment Groups & Categories

The pump range has been rated as

ARNING

Category 2

Temperature Class T3

Unit is suitable for environments

con

taining dust or gas G/D

Group II.

ARNING

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