Edwards ATEX 1 EHR Instruction Manual Download Page 20 | Manualshive

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A750-04-880 Issue F

Page 12

© Edwards Limited 2012. All rights reserved.

Edwards and the Edwards logo are trademarks of Edwards Limited.

TECHNICAL DATA

2.7

Materials of construction

Table 11 - External seals flush liquid flow rate

Pump

Nominal flow rate to

both seals

1 min

-1

*

*

Flow rates are nominal only and based on standard materials of construction and non-flashing hydrocarbon
seals flush liquid with specific heat (Cp) of 1.8 kJ kg

-1

K

-1

and specific gravity (SG) of 0.8. For specific

applications, different materials of construction and seals flush liquid with lower specific heat and specific
gravity please refer to the System Manual or consult Edwards.

Minimum flow rate to

both seals

1 min

-1

EHR 2102S/C/D, 2170S/C/D

8.0

6.0

EHR 2190S/C/D, 2290S/C/D, 2390S/C/D

9.0

7.0

SHR 1300S/C/D, 2300S/C/D, 1400S/C/D, 2400S/C/D

14.0

11.5

SHR 1750S/C/D, 2750S/C/D, 1950S/C/D, 2950S/C/D

17.0

14.5

SHR 21200S/C/D, 11500S/C/D, 21500S/C/D, 21850S/C/D

22.0

20.0

SHR 12500S/C/D, 22500S/C/D

28.0

26.0

Table 12 - Materials of construction: process contact parts: EHR (S/C/D) pumps

Component

Cast iron

Spheroidal graphite (ductile) iron

Casings

Grey cast Iron

Spheroidal graphite (ductile) cast iron

Impellers

Spheroidal graphite (ductile) cast iron

Spheroidal graphite (ductile) cast iron

Shaft

Stainless steel 420

Stainless steel 420

Distance piece

Stainless steel 316

Stainless steel 316

Shaft seals
- Faces
- Elastomers
- Metal parts
- Springs

Single mechanical
Silicon carbide vs carbon
FPM
Stainless steel 316
Stainless steel 316

Single mechanical
Silicon carbide vs carbon
FPM
Stainless steel 316
Stainless steel 316

Fasteners

Carbon steel / Stainless steel 316

Carbon steel / Stainless steel 316

Gaskets

Compressed fibre

Compressed fibre

Sealant

Polyester urethane

Polyester urethane

Manual valves
- Body
- Seals

Ball
Stainless steel 316
PTFE

Ball
Stainless steel 316
PTFE

Stainless steel fitted

Stainless steel

Casings

Grey cast iron

Stainless steel 316

Impellers

Stainless steel 316

Stainless steel 316

Shaft

Stainless steel 420

Stainless steel 316

Distance piece

Stainless steel 316

Stainless steel 316

Shaft seals
- Faces
- Elastomers
- Metal parts
- Springs

Single mechanical
Silicon carbide vs carbon
FPM
Stainless steel 316
Stainless steel 316

Single mechanical
Silicon carbide vs carbon
FPM
Stainless steel 316
Stainless steel 316

Fasteners

Carbon steel / Stainless steel 316

Stainless steel 316

Gaskets

Compressed fibre

Compressed fibre

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Summary of Contents for ATEX 1 EHR

Page 1: ...A750 04 880 Issue F Original Instruction Manual ATEX Category 1 2 and 3 EHR and SHR Liquid Ring Vacuum Pumps...

Page 2: ...ety requirements Part 2 Vacuum pumps EN12100 2010 Safety of machinery General principles for design Risk assessment and risk reduction EN13463 1 2009 Non electrical equipment for use in potentially ex...

Page 3: ...ty requirements Part 2 Vacuum pumps EN12100 2010 Safety of machinery General principles for design Risk assessment and risk reduction EN13463 1 2009 Non electrical equipment for use in potentially exp...

Page 4: ...ty requirements Part 2 Vacuum pumps EN12100 2010 Safety of machinery General principles for design Risk assessment and risk reduction EN13463 1 2009 Non electrical equipment for use in potentially exp...

Page 5: ...ATEX Category 1 2 and 3 pumps 17 3 4 Pumping system design 17 3 4 1 General 17 3 4 2 Oxygen monitoring ATEX Category 2 and 3 pumps only 17 3 5 Sealing liquid and seals flush supply system design 18 3...

Page 6: ...es ATEX Category 1 and 2 pumps 33 5 6 Replenish the bearings with grease 33 5 7 Overhaul the pump 33 5 8 Fault finding 33 6 STORAGE AND DISPOSAL 35 6 1 Storage 35 6 1 1 Preparation 35 6 1 2 Short term...

Page 7: ...e pumps 8 7 Typical performance data and sealing liquid flow rates two stage pumps 9 8 Noise data 10 9 Vibration data 10 10 Sealing seals flush liquid supply data 11 11 External seals flush liquid flo...

Page 8: ...This page has been intentionally left blank A750 04 880 Issue F Page iv Edwards Limited 2012 All rights reserved Edwards and the Edwards logo are trademarks of Edwards Limited...

Page 9: ...pecifies that the related data or other information applies to both the standard model pump and the corresponding ATEX Category 1 2 and 3 model pumps You must use your pump as specified in this manual...

Page 10: ...e pumps have been designed using the principle of constructional safety which ensures that potential ignition sources are eliminated during normal operation for ATEX Category 3 in the event of an expe...

Page 11: ...on ATEX Category 3 pumps are fitted with an ATEX rating label containing the following information The notations used in these ratings are as follows 1 3 2 Temperature classification The temperature c...

Page 12: ...hermal machines and for applications that use water as the sealing liquid the temperature rise across the pump is approximately 5 o C The temperature rise is directly proportional to the specific heat...

Page 13: ...quirements of Section 3 3 On ATEX Category 2 pumps configured for external seals flush supplies the seals flush supplies must comply with the requirements of Section 2 6 ATEX category 2 pumps configur...

Page 14: ...ndustries and applications You must ensure that the pump is suitable for your application If you have any doubts as to the suitability of the pump for your application refer to the Edwards guidelines...

Page 15: ...efer to your System Manual for the specific details of your pump system Table 5 Performance Data Ambient operating temperature range 20 to 40 o C Ambient storage temperature range 30 to 50 oC Maximum...

Page 16: ...1145 20 6 5 SHR 1950S C D 980 37 5 800 37 1450 37 1550 25 7 0 SHR 11500S C D 735 75 1100 64 2000 64 2300 46 12 0 SHR 11850S C D 735 90 1300 84 2400 83 2950 66 14 0 SHR 12500S C D 585 110 3000 96 4000...

Page 17: ...42 9 5 SHR 21200S C D 735 75 1350 40 1950 43 1850 50 14 0 SHR 21500S C D 735 75 1750 56 2500 59 2400 61 14 0 SHR 21850S C D 735 90 2600 65 3250 72 3300 80 16 0 SHR 22500S C D 585 132 4110 85 4450 93 4...

Page 18: ...Typical continuous A weighted emission sound pressure level dB plus uncertainty Nominal pump rotational speed Measured at 1 metre free field EHR 2102S C D 2170S C D 80 3 EHR 2190S C D 2290S C D 2390S...

Page 19: ...ressure When the vapour pressure of the sealing liquid is close to the process inlet pressure the liquid sealing ring can start to boil and this may result in cavitation Cavitation occurs when vapour...

Page 20: ...on Casings Grey cast Iron Spheroidal graphite ductile cast iron Impellers Spheroidal graphite ductile cast iron Spheroidal graphite ductile cast iron Shaft Stainless steel 420 Stainless steel 420 Dist...

Page 21: ...Body Seals N A N A PREN Cr 3 3 Mo 16 N 40 Table 13 Materials of construction process contact parts SHR S C D pumps Component Cast iron Spheroidal graphite ductile iron Casings Grey cast Iron Spheroida...

Page 22: ...olyester urethane Silicone Manual valves Body Seals Ball Stainless steel 316 PTFE Ball Stainless steel 316 PTFE Aluminium bronze Super duplex stainless steel Casings Nickel aluminium bronze 25 Chrome...

Page 23: ...irectives 94 9 EC and 99 92 EC in order for the external ATEX certification to apply Your vacuum system design must ensure that the inlet of the pump is protected from the ingress of particles larger...

Page 24: ...minated components If your pumping system has already been used vent and purge it before you start installation work Ensure that the installation technician is familiar with the safety procedures whic...

Page 25: ...eneral The gases to be pumped must not contain particles larger than those specified in Table 2 If necessary incorporate an inlet filter in the inlet pipeline to the pump to prevent the ingress of sol...

Page 26: ...d to install an ATEX Category 1 or 2 pump configured for internal seals flush supplies in a supply system your system design must ensure that The sealing liquid supply to the pump is clean If you need...

Page 27: ...2 All rights reserved Page 19 Edwards and the Edwards logo are trademarks of Edwards Limited INSTALLATION A750 04 880 Issue F Figure 1 Recommended sealing liquid and seals flush supply system configur...

Page 28: ...Partial recirculation system C Once through system Alternative options Only applicable to ATEX Category 1 and 2 pumps configured for external seals flush supplies on ATEX Category 2 pumps configured...

Page 29: ...outlet pipeline 19 Fresh sealing liquid is supplied to the reservoir 14 through the float operated fill top up valve 15 A mixture of fresh and recovered sealing liquid from the reservoir is then supp...

Page 30: ...nting platform then disconnect the lifting equipment 3 Fit suitable bolts through the fixing bolt holes in the mounting feet to secure the pump in position Refer to the System Manual for the locations...

Page 31: ...a suitable earth ground to prevent static electrical discharges during operation Refer to the System Manual for the size and location of the earth ground stud on the pump WARNING On ATEX Category 1 2...

Page 32: ...eter not less than the pump inlet outlet diameter Support the pipelines to prevent loading of the inlet outlet joints on the pump The loads on the inlet and outlet must not exceed the maximum loads sp...

Page 33: ...r not supplied as described below Refer to the general assembly drawings in the documentation pack supplied with your pump for the location of the temperature transmitter port Also refer to the instru...

Page 34: ...the correct direction 5 If you have removed the guard over the drive coupling or belt as in Step 1 above refit the guard 3 16 Check the leak tightness of the system 3 16 1 General requirements Check t...

Page 35: ...ise there will be a risk of explosion during pump operation Carry out the pressure rise test as follows 1 Evacuate the process system to a pressure just lower than the normal operating pressure 2 Isol...

Page 36: ...A750 04 880 Issue F Page 28 Edwards Limited 2012 All rights reserved Edwards and the Edwards logo are trademarks of Edwards Limited This page has been intentionally left blank...

Page 37: ...example the sealing liquid supply pipeline when the pump is operating Where necessary wear ear defenders The pump can be noisy during operation refer to Section 2 4 4 2 Start up 1 Refer to Figure 1 d...

Page 38: ...uid hammer is a pressure surge or wave resulting when a fluid in motion is forced to stop or change direction suddenly This can occur when the flow rate of sealing liquid into the pump is too high Ref...

Page 39: ...he pump has been heated to 260 oC and above These breakdown products are very dangerous Fluorinated materials in the pump may include greases and seals The pump may have overheated if it was misused i...

Page 40: ...ions 5 Inspect all of the sealing liquid and seals flush liquid supply system components pipelines and connections and check that they are not damaged or corroded and that they do not leak 5 4 Check t...

Page 41: ...the vent You must use a high quality lithium based grease according to DIN51825 K2K 30 Refer to the documentation pack supplied with your pump for the locations of the grease points and bearing vents...

Page 42: ...the sealing liquid supply is as specified in Section 2 6 Is the direction of pump rotation incorrect Check the direction of pump rotation and correct as necessary refer to Section 3 15 Is there a leak...

Page 43: ...let and sealing liquid connections and on ATEX Category 1 and 2 pumps configured for external seals flush supplies only over the seals flush connections 5 Use suitable lifting equipment to move the pu...

Page 44: ...u turn the drive shaft through three or four revolutions to turn the pump and prevent seizure When required for use Flush the pump with a suitable cleaning solution to remove any corrosion inhibitor f...

Page 45: ...AGE AND DISPOSAL A750 04 880 Issue F Take particular care with the following Components that have been contaminated with dangerous substances Sealing seals flush liquid that has been contaminated with...

Page 46: ...A750 04 880 Issue F Page 38 Edwards Limited 2012 All rights reserved Edwards and the Edwards logo are trademarks of Edwards Limited This page has been intentionally left blank...

Page 47: ...you order state for each part required Model and Item Number of your equipment Serial number Item Number and description of part 7 2 Service Edwards products are supported by a world wide network of...

Page 48: ...A750 04 880 Issue F Page 40 Edwards Limited 2012 All rights reserved Edwards and the Edwards logo are trademarks of Edwards Limited This page has been intentionally left blank...

Page 49: ...harmonised standards The functional safety of your safety related control system must meet the minimum requirements for the combined equipment group and category and must perform the functions as des...

Page 50: ...A750 04 880 Issue F Page 42 Edwards Limited 2012 All rights reserved Edwards and the Edwards logo are trademarks of Edwards Limited This page has been intentionally left blank...

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