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Series RMA-B

  

close-coupled design

 

Page 

 

 

9450-055-en 

Revision  01 

TM 9886

 

Edition  11/2018 

Dry-running cannot only occur with an 

insufficiently filled interior but also in the event 

of high gas contents in the liquid medium. 

Operation of the pump outside the admissible 

operating range may also lead to dry-running (e.g. 

due to evaporation in the interior). 

 

2.6.7  Temperature limits 

In the normal operating condition the highest 

temperatures are to be expected on the 

surface of the pump housing. 

In the case of liquids >40 °C  (>104 °F) the surface 

temperature of the pump housing is generally lower 

than the temperature of the liquid as the plastic lining 

has an insulating effect. 

If the pump is heated (e.g. heating jacket), it 

must be ensured that the temperature 

classes prescribed in the annex are 

observed. 
The non heated pump surface must have free contact 

with the environment. 

When operating the pump, make sure that  

an excessive deposit of dust is avoided 

(possibly regular cleaning). This prevents the 

pump surface from heating to above the admissible 

temperature. 

The plant customer must ensure that the 

prescribed operating temperature is observed. 

The maximum admissible temperature of the 

liquid medium at the pump inlet depends on the 

temperature class and the selected lining material 

required in each case. 

The principle always applies that no inadmissible 

temperatures may be introduced into the motor and 

that the specifications of the motor manufacturer as 

well as VDMA/TVEI 24263 are to be observed. 
The temperature limit values of the liquid medium 

given in 

Table 2

 are only applicable if motors are used 

where the motor manufacturer permits at least the 

following surface temperatures for the motor flange 

and shaft: 

Table 1 

Temperature 

class 

Motor flange 

Motor shaft 

T6 

70 °C(158 °F) 

70 °C(158 °F) 

T5 

70 °C(158 °F) 

80 °C(176 °F) 

T4 

75 °C(167 °F) 

85 °C(185 °F) 

T3 

75 °C(176 °F) 

85 °C(212 °F) 

T2 

75 °C(176 °F) 

85 °C(212 °F) 

T1 

75 °C(176 °F) 

85 °C(212 °F) 

 

Observe the figures of the motor manufacturers and 

VDMA/ZVEI 24263 on inadmissible ambient 

temperatures. If these values are missing, max. 40° C 

(104 °F) is to be assumed. 

Table 2

  below indicates the admissible medium 

temperature, depending on the pump design, as a 

function of the temperature class in accordance with 

EN 13463-1. 

Table 2 

Temperature class acc. 

to EN 13463-1 

Limit value of the 

temperature of the liquid 

PFA 

T6

 85 °C (185 °F) 

75 °C 

1)

 (167 °F) 

T5

 100 °C (212 °F) 

90 °C

1)

 (194 °F) 

T4

 135 °C (275 °F) 

125 °C (257 °F) 

T3

 200 °C (392 °F) 

150 °C (302 °F) 

T2

 300 °C (572 °F) 

150 °C (302 °F) 

T1

 450 °C (842 °F) 

150 °C (302 °F) 

 

1)  The limit values specified for the temperature of the medium at the 

pump inlet are determined for the most unfavourable case (high 

speed, low flow, low heat capacity of the medium, ....). Under 

favourable operating conditions the limit values specified may  be 

increased by up to 5 K after consultation with the manufacturer. 

In the case of motors with the ignition protection class 

"increased safety", only low surface temperatures are 

generally admissible on the motor shaft and on the 

motor flange.  
In  such cases, the max. admissible medium 

temperature lies 20 K above the permitted surface 

temperature at the interfaces to the motor. 
e.g.:  max. motor shaft temperature:  60 °C (140 °F)  

 

max. motor flange temperature: 65 °C (149 °F) 

This results in an admissible medium temperature at 

the pump of von 

80 °C (60 °C + 20 K), 

.176 °F (140 °F 

+ 20 K). 

If values on the admissible ambient temperature are 

missing, max. 40 °C is always to be assumed. 

 

 

2.6.8  Maintenance 

To achieve safe and reliable operation, it 

must be ensured in inspections at regular 

intervals that the unit is properly serviced 

and kept in technically perfect order. 
In regard to media containing solids, the maintenance 

intervals must be set by the operator in accordance 

with the conditions of operation. 
If auxiliary systems (e.g. cooling, heating) are 

installed, check to see whether monitoring facilities 

are required to ensure their function. 

 

 

2.6.9  Electric peripheral equipment 

Electric peripheral equipment, e.g. pressure, 

temperature and flow sensors etc. must 

comply with the prevailing safety requirements 

and explosion protection provisions. 
Regular checks of the motor bearings in accordance 

with the operating manual of the motor manufacturer. 

Observe ATEX notes. 

 

Содержание RMA Series

Страница 1: ...be strictly observed before transport installation operation and maintenance Subject to change without notice Reproduction is generally permitted with indication of the source Richter Chemie Technik G...

Страница 2: ...2 5 4 6 Venting and evacuating 12 5 5 Pipe fittings 12 5 6 Monitoring facilities 13 5 7 Drive 13 5 8 Electric connection 13 6 Commissioning Shutdown 14 6 1 Initial commissioning 14 6 1 1 Filling the p...

Страница 3: ...machine directive 2006 42 EG Gregor Kleining Designation Single stage plastic lined magnetic drive chemical centrifugal pump series RMA B close coupled design Horizontal design sealless free of eddy...

Страница 4: ...e inch ASME in lbs Nm 1 4 x 70 8 1 4 x 135 15 2 4 x 5 8 220 25 3 4 x 5 8 400 45 4 8 x 5 8 310 35 6 8 x 5 8 310 35 1 2 Type plate dry running ATEX and housing markings The stainless steel type plate is...

Страница 5: ...perty from magnetic fields Risk to people from electric mechanical and chemical effects Risks to the environment through leaks of hazardous substances If the unit is used in potentially explosive area...

Страница 6: ...plosive area Prevent inadmissible modes of operation 2 3 Notes on safety for maintenance Strictly work on the pump unit may only be performed when it is at a standstill The pump housing must have reac...

Страница 7: ...th a conductivity 10 8 S m inert gas must be used for flushing during drain See also Chapter 6 3 2 6 4 Identification The identification on the pump relates to the pump section A separate declaration...

Страница 8: ...on inadmissible ambient temperatures If these values are missing max 40 C 104 F is to be assumed Table 2 below indicates the admissible medium temperature depending on the pump design as a function o...

Страница 9: ...proper storage The product should be stored in a dry and vibration free well ventilated room at as constant a temperature as possible Elastomers are to be protected against UV light In general a stor...

Страница 10: ...to prevent it from turning The shaft 222 is mounted with a positive connection in the can insert 158 The impeller 230 and the inner magnet assembly 859 can be separated and can therefore be replaced i...

Страница 11: ...ng so that there is no tension and retighten the screws Use supports in the direct vicinity of the bolts foundation base plate 5 4 Piping Before the pump is installed both the suction and supply lines...

Страница 12: ...p Should the piping internals upstream of the pump be horizontal a low point can of course be located upstream of these internals From here the pipe is then laid with an upward gradient to the pump so...

Страница 13: ...ny stoppage of the magnetic drive This also applies if the required drive rating exceeds 80 of the magnetic drive rating at nominal speed Consult Richter if necessary Different operating data can be a...

Страница 14: ...eck to see whether the pump shaft can be readily turned by hand Check the direction of rotation of the motor with the coupling disengaged or with a rotary field instrument As viewed from the motor the...

Страница 15: ...rostatic and induced charges mechanical and electric sparks can result from these inadmissible modes of operation their occurrence can only be prevented by adhering to the intended use Pump is started...

Страница 16: ...lations See also Chapter 6 3 If no new assembly is performed immediately after dismantling the plastic and ceramic components in particular must be stored carefully Dismantling can be checked using th...

Страница 17: ...uts and screws 901 7 Remove the screwplug 903 4 from the adapter Undo both setscrews 904 1 Pull adapter 346 forward Pull drive magnet assembly 858 off the motor shaft If the drive magnet assembly is d...

Страница 18: ...and screw thread prior to assembly Check whether all parts fit and only then assemble Important dimensions centerings bearing fits or bearing play are to be checked prior to assembly perform a trial a...

Страница 19: ...bearings require a minimum axial play for perfect functioning This axial play Z must be checked using the drawing Fig 8 after completion of assembly Size Dimension Z inch mm 1 5 x1 x6 0 02 0 06 0 5 1...

Страница 20: ...e distance ring 504 and then the bearing bush 545 2 Carefully press the thrust ring 510 2 into the impeller 230 right to the stop Pay attention to the correct position of the anti torsion insert groov...

Страница 21: ...zzle and move the rotating unit axially The axial play can be determined through the discharge nozzle See Chapter 7 7 1 If the minimum axial play is not attained insert more housing gaskets 401 When i...

Страница 22: ...ed Have any strainers installed been cleaned Are all shut off devices open Is the geodetic head too high Is the NPSHA too low or the NPSHR too high Are the pipe resistances too high Is the viscosity t...

Страница 23: ...x bearing bush plain bearing bush 566 1 anti torsion insert 338 shaft spider includes 523 1 shaft sleeve 566 1 anti torsion insert 344 lantern 903 5 screw plug 346 adapter 401 housing gasket 415 1 cen...

Страница 24: ...Series RMA B close coupled design Page 24 9450 055 en Revision 01 TM 9886 Edition 11 2018 9 2 RMA B close coupled design NEMA motor...

Страница 25: ...lternatively by axial striking with a rubber hammer on the end face of the device Insert bearing bushes Place the bearing bush onto the rotor Slide the device with the side 2 forward from the drive si...

Страница 26: ...01 TM 9886 Edition 11 2018 10 4 Insertion tool for shaft spider Pump size Ident No Impeller eye 1 5 9428 81 1055 Impeller eye 3 9428 81 1056 Impeller eye 3 Gr2 9428 81 1057 Impeller eye 4 9428 81 105...

Страница 27: ...ruction purposes only when signed Technische nderungen vorbehalten Nicht ma st blich Ma e nur mit Unterschrift verbindlich CHEMIENORMPUMPEN CHEMICAL PROCESS PUMPS POMPE POUR L INDUSTRIE CHIMIQUE Baure...

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Страница 30: ...tamination of the pumps valves and component sent in for repair On the basis of this information for the contractor is it possible to meet the necessary preventive action during the execution of the r...

Страница 31: ...hich cleaning method radioactive 3 1 if no then forward to D other pollutant 2 Aggregates which are contaminated with microbiological or explosive substances are only accepted with documented evidence...

Страница 32: ...materials The laws are such as the Health and Safety at Work Act ArbSt ttV the Ordinance on Harzadous Substances GefStoffV BIOSTOFFV the procedures for the prevention of accidents as well as regulati...

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Страница 36: ...ion 01 9450 055 en Richter TM Richter Chemie Technik GmbH IDEX TM IDEX Corporation JOHANNESBURG Tel 011 397 2833 DURBAN Tel 031 579 2593 South Africa 0861 103 103 E mail sales valve co za www valve co...

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