Edwards HT10 User manual

B311-01-880
Issue K Original
Instruction Manual
HT10 and HT16 High Throughput
Diffusion Pumps
Description Voltage Item Numbers
ANSI10/ANSI2
Inlet/Outlet EO 12 inch/EO 130 mm Inlet/Outlet ISO320/ISO63 Inlet/Outlet
HT10 High Throughput Diffusion Pumps 200 V B311-01-200 B311-02-200 B311-03-200
220 V B311-01-220 B311-02-220 B311-03-220
380 V B311-01-380 B311-02-380 B311-03-380
400 V B311-01-400 B311-02-400 B311-03-400
415 V B311-01-415 B311-02-415 B311-03-415
440 V B311-01-440 B311-02-440 B311-03-440
460 V B311-01-460 B311-02-460 B311-03-460
480 V B311-01-480 B311-02-480 B311-03-480
Description Voltage Item Numbers
ANSI16/ANSI3
Inlet/Outlet ISO500/ISO100 Inlet/Outlet
HT16 High Throughput Diffusion Pumps 200 V B312-04-200 B312-05-200
220 V B312-04-220 B312-05-220
380 V B312-04-380 B312-05-380
400 V B312-04-400 B312-05-400
415 V B312-04-415 B312-05-415
440 V B312-04-440 B312-05-440
460 V B312-04-460 B312-05-460
480 V B312-04-480 B312-05-480

This product has been manufactured under a quality management system certified to ISO 9001:2008
Declaration of Conformity
We, Edwards,
Innovation Drive,
Burgess Hill,
West Sussex,
RH15 9TW, UK
declare under our sole responsibility, as manufacturer and person within the EU authorised
to assemble the technical file, that the product(s)
HT10 Vapour Diffusion Pumps:
B311-01-200, B311-01-220, B311-01-240, B311-01-380, B311-01-400, B311-01-415,
B311-01-460, B311-01-480, B311-02-200, B311-02-220, B311-02-240, B311-02-380,
B311-02-400, B311-02-415, B311-03-200, B311-03-220, B311-03-240, B311-02-380,
B311-03-400, B311-03-415, B311-03-480
to which this declaration relates is in conformity with the following standard(s) or other
normative document(s)
EN1012-2:1996+A1:2009 Compressors and Vacuum Pumps. Safety Requirements. Vacuum
Pumps
EN60204-1: 2006 Safety of machinery. Electrical equipment of machines.
+ A1: 2009 General Requirements
and fulfils all the relevant provisions of
2014/35/EU Low Voltage Directive
Note: This declaration covers all product serial numbers from the date this Declaration was
signed onwards.
13.05.2016, Burgess Hill
Mr Peter Meares
Senior Technical Support Manager, General Vacuum Date and Place
P200-04-120 Issue B

P200-10-036
IssueA
Materials Declaration
In accordance with the requirements of the Chinese regulatory requirement on the Management Methods for the
Restriction of the Use of Hazardous Substances in Electrical and Electronic Products Order No. 32 (also known as
‘China RoHS2’) and SJ/T 11364 Marking for the Restricted Use of Hazardous Substances in Electronic and Electrical
Products:
Product Labels
Product Product Label Meaning
All pumps in the
list below
2020
This product contains hazardous substances in at least one of the
homogeneous materials used which are above the limit requirement
in GB/T 26572 as detailed in the declaration table below.
These parts can safely be used for the environmental protection use
period as indicated.
Pump Type Pump Size
Diffusion Pumps Diffstak 63, 100, 160, 250
Vapour Boosters 30B5, 18B4
High Throughput Pumps HT10, 16, 20
材料成分声明
Materials Content Declaration
部件名称
Part name
危险物质
Hazardous Substances
铅
Lead
(Pb)
汞
Mercury
(Hg)
镉
Cadmium
(Cd)
六价铬
Hexavalent
Chromium
(Cr VI)
多溴联苯
Polybrominated
biphenyls (PBB)
多溴二苯醚
Polybrominated
diphenyl ethers
(PBDE)
铸铝
Cast Aluminium X O O OOO
铜管管件
Brass pipe Fittings XOOOOO
铜接头
Brass Connectors XOOOOO
O：表示该有害物质在该部件的所有均质材料中的含量低于 GB/T 26572 标准规定的限量要求。
O: Indicates that the hazardous substance contained in all of the homogeneous materials for this part is below
the limit requirement in GB/T 26572.
X：表示该有害物质在该部件的至少一种均质材料中的含量超出 GB/T26572 标准规定的限量要求。
X: Indicates that the hazardous substance contained in at least one of the homogeneous materials used for
this part is above the limit requirement of GB/T26572.
NOTES: These products are EU RoHS compliant, the following Exemptions apply:
6(b) Lead as an alloying element in aluminium containing up to 0.4% by weight.
6(c) Copper alloy containing up to 4% lead by weight
Packaging Information
Pallet Over-shipper Protection Pieces Support Braces
NWNW
Recyclable Natural Wood Recyclable Cardboard Recyclable Polypropylene Recyclable Mild Steel

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Contents
B311-01-880 Issue K
Contents
Section Page
1 Introduction .......................................................................................1
1.1 Scope and definitions ................................................................................................... 1
1.2 Description ................................................................................................................ 2
1.2.1 HT10 and HT16 Diffusion Pumps ....................................................................................... 2
1.2.2 Pump-inlet and outlet sizes ............................................................................................ 2
1.2.3 Drain/fill assembly ...................................................................................................... 2
1.2.4 Over-temperature and auxiliary protection ......................................................................... 3
1.3 Performance .............................................................................................................. 3
1.4 Operation with high ambient humidity ............................................................................... 3
2 Technical data ....................................................................................9
2.1 Performance and operating conditions ............................................................................... 9
2.2 Pump warm-up and cool-down curves ................................................................................ 9
2.3 Mechanical data .........................................................................................................10
2.4 Electrical data ...........................................................................................................10
2.5 Pump fluid data .........................................................................................................11
2.6 Construction details ....................................................................................................11
3 Installation ....................................................................................... 17
3.1 Unpack and Inspect .....................................................................................................17
3.2 Locate the pump ........................................................................................................17
3.3 Electrical connections ..................................................................................................18
3.3.1 Pump electrical supply .................................................................................................18
3.3.2 Over-temperature protection .........................................................................................20
3.3.3 Auxiliary plug connections ............................................................................................20
3.3.4 Indicator trip ............................................................................................................20
3.4 Cooling-water connections ............................................................................................22
3.5 Vacuum connections ...................................................................................................22
3.6 Leak-test the system ...................................................................................................23
3.7 Fill the pump with fluid ................................................................................................23
3.7.1 Safety of vapour pump fluids .........................................................................................23
3.7.2 Recommended pump fluids ...........................................................................................23
3.7.3 Filling procedure ........................................................................................................23
4 Operation ........................................................................................ 25
4.1 Introduction .............................................................................................................25
4.2 Check the insulation resistance of the heaters ....................................................................26
4.3 Pump start-up ...........................................................................................................26
4.3.1 Fully-valved pumping system .........................................................................................26
4.3.2 Partially-valved pumping system .....................................................................................27
4.3.3 Valveless pumping system .............................................................................................27
4.4 Process cycling ..........................................................................................................27
4.4.1 Re-admission of air to your vacuum system ........................................................................27
4.4.2 Re-evacuate your vacuum system ....................................................................................27
4.5 Pump shut-down ........................................................................................................28
4.5.1 Introduction .............................................................................................................28
4.5.2 Fully-valved pumping systems ........................................................................................28
4.5.3 Partially-valved pumping systems ....................................................................................30
4.5.4 Valveless pumping systems ............................................................................................30
5 Maintenance ..................................................................................... 31
Ipsitech 9001(24)-2008

B311-01-880 Issue K
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Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
5.1 Safety .....................................................................................................................31
5.2 Maintenance plan .......................................................................................................32
5.3 Check the pump fluid-level ...........................................................................................32
5.4 Inspect and drain the pump fluid ....................................................................................32
5.5 Clean the pump .........................................................................................................33
5.5.1 Clean the HT10 pump ..................................................................................................33
5.5.2 Clean the HT16 pump ..................................................................................................34
5.6 Clean the condenser assembly ........................................................................................35
5.7 Clean the cooling-coils .................................................................................................35
5.8 Replace the thermal snap-switch ....................................................................................35
5.9 Heater maintenance ....................................................................................................36
5.9.1 Remove the heaters ....................................................................................................36
5.9.2 Fit the new heaters .....................................................................................................37
5.10 Replace electrical components .......................................................................................37
5.11 Fault finding .............................................................................................................40
5.11.1 The pump will not start ................................................................................................40
5.11.2 The pump shuts down ..................................................................................................40
5.11.3 The pump fails to achieve specified performance .................................................................40
5.11.4 High-pressure pumping speeds (above 1 x 10-3 mbar, 1 x 10-1 Pa) are poor ..................................41
5.11.5 Pumping is unstable ....................................................................................................41
5.11.6 Pressure is unstable ....................................................................................................41
5.11.7 Backstreaming is excessive ............................................................................................41
5.11.8 Pump fluid loss is excessive ...........................................................................................41
6 Storage and disposal ........................................................................... 43
6.1 Storage ...................................................................................................................43
6.2 Disposal ...................................................................................................................43
7 Service, spares and accessories .............................................................. 45
7.1 Introduction .............................................................................................................45
7.2 Service ....................................................................................................................45
7.3 Spares .....................................................................................................................45
7.3.1 HT10 spares ..............................................................................................................46
7.3.2 HT16 spares ..............................................................................................................46
7.3.3 Spares common to HT10 and HT16 ...................................................................................47
7.4 Accessories ...............................................................................................................47
7.4.1 Thermal probe ..........................................................................................................47
7.4.2 Heat shield ...............................................................................................................47
7.4.3 Inlet baffle ...............................................................................................................48

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Contents
B311-01-880 Issue K
Illustrations
Figure Page
1 HT10 pump sectional view ............................................................................................. 4
2 HT16 pump sectional view ............................................................................................. 6
3 Pump dimensions (mm): HT10 shown ................................................................................12
4 HT10 performance curves .............................................................................................13
5 HT16 performance curves .............................................................................................14
6 Pump warm-up curves: temperature of base flange (°C) plotted against time ...............................15
7 Pump cool-down curves: temperature of base flange (°C) plotted against time .............................15
8 Pump electrical block diagram .......................................................................................19
9 Auxiliary plug wiring ...................................................................................................21
10 Terminal-box (with cover removed) .................................................................................21
11 Fully-valved pumping system .........................................................................................29
12 Partially-valved pumping system .....................................................................................29
13 Valveless pumping system .............................................................................................29
14 Thermal snap-switches .................................................................................................36
15 HT10 pump base (with outer radiation shield removed) .........................................................38
16 HT16 pump base (with outer radiation shield removed) .........................................................39
Tables
Table Page
1 Performance and operating conditions data ........................................................................ 9
2 Mechanical data .........................................................................................................10
3 Electrical data ...........................................................................................................10
4 Pump fluid data .........................................................................................................11
5 Construction consumables .............................................................................................11
6 Construction materials .................................................................................................11
7 Checklist of items .......................................................................................................17
8 Vapour pump fluid thermal breakdown .............................................................................24
9 Maintenance plan .......................................................................................................32
Associated publications
Publication title Publication number
HT Pump Accessories B611-01-880

B311-01-880 Issue K
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Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
Tradename credits
Apiezon®is a registered trademark of M & I Materials.
Santovac® is a registered trademark of Santovac Fluids Inc.

© Edwards Limited 2008. All rights reserved. Page 1
Edwards and the Edwards logo are trademarks of Edwards Limited.
Introduction
B311-01-880 Issue K
1Introduction
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the Edwards HT10 and HT16 High
Throughput Diffusion Pumps. You must use the HT10 and HT16 pumps as specified in this manual.
Read this manual before you install and operate the pump. Important safety information is highlighted as WARNING
and CAUTION instructions; you must obey these instructions. The use of WARNINGS and CAUTIONS is defined below.
CAUTION
Cautions are given where failure to observe the instruction could result in damage to the equipment, associated
equipment and process.
The following IEC warning labels appear on the pump:
The units used throughout this manual conform to the SI international system of units of measurement.
WARNING
Warnings are given where failure to observe the instruction could result in injury or death to
people.
Warning - refer to accompanying documentation.
Warning - risk of electric shock.
Warning - hot surface.
Protective conductor terminal.

B311-01-880 Issue K
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Edwards and the Edwards logo are trademarks of Edwards Limited.
Introduction
1.2 Description
1.2.1 HT10 and HT16 Diffusion Pumps
The HT10 and HT16 are water-cooled, high throughput diffusion pumps with built-in over-temperature protection.
The component parts of the pumps are shown in Figures 1and 2.
The pump has a welded tubular body assembly and a precision machined interior with accurate vapour jet gaps. The
body assembly has an inlet-flange, a main body tube, a base and an outlet-condenser assembly. The pump is cooled
by water which passes through a tubular copper coil attached to thebody and configured toprovide optimum cooling.
There are three annular jet stages (four on the HT16) and a conical ejector jet stage. The top-jet has a cool-cap
which reduces backstreaming without loss of pumping speed. In the HT16, the cool-cap is water-cooled to
accommodate the higher operational temperature of the HT16.
These pumps are fractionating. This means that the higher vapour pressure fractions of the pump fluid are fed to the
lower jets. The top-jet receives the lower vapour pressure fractions. This improves the ultimate vacuum of the pump.
1.2.2 Pump-inlet and outlet sizes
The HT10 pump is available with three different pump-inlet and outlet connection configurations and the HT16 pump
is available with two different pump-inlet and outlet connection configurations.
These configurations are listed on the front cover and the following notation is used:
z‘ANSIxx’ means an ANSI xx inch flange (for example, ANSI16 means an ANSI 16 inch flange)
z‘EO xx inch’ means an Edwards xx inch flange (and, for example, ‘EO 130 mm’ means an Edwards 130 mm
flange)
z‘ISOxx’ means an ISOxx standard flange (for example, ISO320)
1.2.3 Drain/fill assembly
The boiler drain-plug and the fluid-level dipstick are located on the base of the pump, at the junction with the
electrical-box cover. The dipstick is used to check the pump fluid-level. Removal of the dipstick also enables the
pump to be filled with pump fluid.

© Edwards Limited 2008. All rights reserved. Page 3
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Introduction
B311-01-880 Issue K
1.2.4 Over-temperature and auxiliary protection
The pump has an over-temperature protection system. If the pump overheats due to either cooling failure or fluid
loss, the heaters are switched off before serious damage occurs and before the pump fluid can go through a process
of thermal breakdown (see Section 3.7.1).
The over-temperature protection system has a contactor controlled by two thermal snap-switches. One thermal snap-
switch monitors the temperature of the cooling-coils and the other snap-switch monitors the temperature of the base
of the pump.
The contacts of the thermal snap-switches open at a preset threshold temperature. Once opened, the snap-switches
will automatically reset if the temperature of the pump drops below the threshold temperature. If the electrical
supply fails during operation, the snap-switch contacts will not open and the pump will restart after the restoration
of the electrical supply unless additional protection measures are used.
The over-temperature protection system is a low-voltage (24 V a.c.) series-switched circuit. You cannot use this
circuit as an electrical supply to accessories.
A low-voltage (24 V a.c.) auxiliary circuit is wired in series with the thermal snap-switch assembly. This auxiliary
circuit may be used to provide secondary protection. For example, it may be used in conjunction with a vacuum
switch or controller to switch off the pump heaters if the backing pressure is too high. Connect to the auxiliary circuit
through the auxiliary plug fitted to the electrical-box (see Section 3.3).
1.3 Performance
The pumping speeds and throughputs, given in Section 2, were calculated from measurements made with total
pressure gauges. If partial-pressure gaugesare used, the calculated values for pumpingspeeds are approximately 30%
larger. This is because partial-pressure gauges do not measure the pressure added to the system by condensable
gases.
The HT pumping speeds were calculated with reference to international standards. If American Vacuum Society
standards are used, the pumping speeds are approximately 10% larger.
We do not give values for the ultimate vacuum of the HT pumps. The ultimate vacuum depends on the fluid used in
the pump, the leak tightness of the system, outgassing from surfaces and the use of cold traps.
1.4 Operation with high ambient humidity
When the pump is switched off, the heaters in the pump will absorb moisture: this will cause a decrease in the
insulation resistance of the heaters. If you operate the pump in an environment with high ambient humidity, this may
cause the heaters to fail. The rate of moisture absorption (and therefore the time taken for the insulation resistance
of the heaters to fall below the recommended value) depends on the ambient humidity and temperature and the
length of time that the pump is switched off.
In addition to the recommendations made in later sections of this manual, you can overcome the effect of high
ambient humidity if you:
zConfigure the electrical installation of the pump for ‘soft-start’ operation, when the pump is operated with
typically 20 to 25% of the nominal supply voltage.
zInstall an anti-moisture heater under the base of the pump. Switch on this heater when you switch off the
pump.
Detailed information about these recommendations is outside the scope of this manual. If you need more information
about the operation of the pump with high ambient humidity, request a copy of our Application Note P400-50-000
from your supplier or Edwards .

B311-01-880 Issue K
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Edwards and the Edwards logo are trademarks of Edwards Limited.
Introduction
Figure 1 - HT10 pump sectional view

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Introduction
B311-01-880 Issue K
Figure 1 - HT10 pump sectional view (continued)
1. Cool-cap assembly
2. Spring
3. Inlet-flange
4. Top-stage disk
5. Water-inlet connection
6. Terminal-box
7. Cooling coils
8. Water-outlet connection
9. Outlet-flange (backing line)
10.Baffle assembly
11.Outlet-condenser assembly
12.Electrical-box
13.Thermal snap-switch assembly
14.Interior locating-pin
15.Base assembly
16.Oil drier
17.Radiation shield
18.Centre tube
19.Lower-stage
20.Interior tie-rod
21.Second-stage
22.Top-stage
23.Spring, disk and split-pin
24.Not used
25.Not used
26.Not used
27.Not used
28.Not used
29.Not used
30.Secondary-cap
31.Top-jet cap
32.Second-stage disk
33.Not used
34.Not used
35.Not used
36.Dipstick/filler-plug
37.O-rings
38.Drain-plug
39.Baffle mounting screw
40.Fixing screw
41.Base flange
42.Inner thermal shield
43.Outer thermal shield
44.Body tube

B311-01-880 Issue K
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Introduction
Figure 2 - HT16 pump sectional view

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Introduction
B311-01-880 Issue K
Figure 2 - HT16 pump sectional view (continued)
1. Cool-cap assembly
2. Inlet-flange
3. Top-stage disk
4. Water-inlet connection
5. Terminal-box
6. Cooling coils
7. Water-outlet connection
8. Outlet-flange (backing line)
9. Baffle assembly
10.Outlet-condenser assembly
11.Electrical-box
12.Thermal snap-switch assembly
13.Interior locating-pin
14.Base assembly
15.Oil drier
16.Radiation shield
17.Centre tube
18.Lower-stage
19.Interior tie-rod
20.Third-stage
21.Second-stage
22.Top-stage
23.Spring, disk and fixing bolt
24.Cool-cap
25.Secondary-cap
26.Fixing screw
27.Special washer
28.Ceramic washer
29.Ceramic spacer
30.Top-jet cap
31.Cooling-water tubes
32.O-rings
33.Mounting screws
34.Water boss
35.Mounting screws
36.Body boss
37.Connection flange
38.Second-stage disk
39.Baffle mounting screw
40.Location pin
41.Base flange
42.Inner thermal shield
43.Outer thermal shield
44.Body tube
45.Dipstick/filler-plug
46.O-rings
47.Drain-plug

B311-01-880 Issue K
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Technical data
B311-01-880 Issue K
2Technicaldata
2.1 Performance and operating conditions
2.2 Pump warm-up and cool-down curves
Note: The temperatures specified below and shown in Figures 6and 7were measured at the edges of the base
flanges of the HT10 pump (Figure 1, Item 41) and the HT16 pump (Figure 2, Item 41). The temperatures and
curves are therefore different from those specified for the thermal probe accessory in the EXT Accessories
instruction manual.
Figure 6 shows the time for the pumps to warm-up from an ambient temperature of approximately 20 °C to a final
operating temperature of approximately 210 °C for the HT10 and approximately 240 °C for the HT16.
Figure 7 shows the time for the pumps to cool down from operating temperature to approximately 90 °C.
Table 1 - Performance and operating conditions data
HT10 HT16
Performance curve *
*As specified in Section 1.3, pump performance depends on a number of factors; Figures 4and 5show typical
performance curves
See Figure 4 See Figure 5
Pumping speed (ISO)
Nitrogen 3000 l s-1 6500 l s-1
Helium 4500 l s-1 7200 l s-1
Backstreaming rate at ultimate vacuum 1 x 10-4 mg cm-2 min-1 1 x 10-3 mg cm-2 min-1
Throughput at 4 x 10-3 mbar
Nitrogen 10 mbar l s-1
1 x 10-3 Pa l s-1 17.5 mbar l s-1 1.75 x 10-3 Pa l s-1
Helium 16 mbar l s-1
1.6 x 10-3 Pa l s-1 29 mbar l s-1 2.9 x 10-3 Pa l s-1
Fluid loss at 4 x 10-3 mbar (4 x 10-1 Pa) 0.5 g h-1 0.7 g h-1
Critical backing pressure (with DC704EU fluid) 0.9 mbar, 90 Pa 1.4 mbar, 140 Pa
Maximum system pressure (absolute) 1.3 bar, 1.3 x 105Pa 1.3 bar, 1.3 x 105Pa
Minimum backing pump displacement
for maximum throughput 60 m3h-1 94 m3h-1
Recommended Edwards backing pump E2M80 E2M175
Warm-up time to operating temperature 30 min 60 min
Warm-up time to maximum throughput 45 min 75 min
Cool-down time (to approximately 100 °C) 120 min 180 min
Maximum ambient working temperature 40 °C 40 °C
Typical surface temperature 150 °C 150 °C
Maximum allowed water-outlet temperature 35 °C 35 °C
Minimum cooling-water flow 400 l h-1 at 25 °C 700 l h-1 at 25 °C
Pressure differential across cooling-water supply and
return connections 1 bar (gauge), 2 x 105Pa 1 bar (gauge), 2 x 105Pa

B311-01-880 Issue K
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Technical data
2.3 Mechanical data
2.4 Electrical data
Table 2 - Mechanical data
HT10 HT16
Dimensions See Figure 3 See Figure 3
Mass 80 kg 185 kg
Inlet flange ANSI10, EO 12 inch or IS320 ANSI16 or ISO500
Outlet flange ANSI2, EO 130 mm or ISO63 ANSI3 or ISO100
Cooling-water connections 3/8NPT female 3/4NPT female
Maximum stability angle 20° 20°
Table 3 - Electrical data
HT10 HT16
Heaters
Number of heaters 3 6
Voltage 200, 220, 380, 400, 415,
440, 460 or 480 V 200, 220, 380, 400, 415, 440, 460 or 480 V
Power per heater 1.7 kW 1.5 kW
Total power 5.1 kW 9 kW
Recommended RCCB rating 30 mA 30 mA
Transformer
Output 24 V a.c., 50/60 Hz 24 V a.c., 50/60 Hz
Rating 50 VA minimum 50 VA minimum
Contactor
Contact current resistive (maximum) 20 A 32 A
Coil voltage 24 V a.c., 50/60 Hz 24 V a.c., 50/60 Hz
Coil power rating 50 VA inrush, 8 VA hold 50 VA inrush, 8 VA hold
Over-current protection setting
200 V 50/60 Hz 16.4 A 29.0 A
220 V 50/60 Hz 14.9 A 26.3 A
380 V 50/60 Hz 8.7 A 15.2 A
400 V 50/60 Hz 8.2 A 14.5 A
415 V 50/60 Hz 7.9 A 14.0 A
440 V 50/60 Hz 7.5 A 13.2 A
460 V 50/60 Hz 7.1 A 12.6 A
480 V 50/60 Hz 6.9 A 12.1 A
Over-temperature protection system fuses
Transformer supply 630 mA, 1.25-inch 630 mA, 1.25-inch
Control circuit supply 2.5 A, 20 mm 2.5 A, 20 mm

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Technical data
B311-01-880 Issue K
2.5 Pump fluid data
Note: Edwards Material Safety Data Sheets for the fluids specified in Table 4 are available on request.
2.6 Construction details
Table 4 - Pump fluid data
HT10 HT16
Pump fluid charge (dry) 1750 ml 3000 ml
Pump fluid charge (wet) 1500 ml 2600 ml
Pump fluid charge (minimum) 750 ml *
*The minimum fluid charge specified above is the charge at 5.1 kW (that is, nominal electrical supply
voltage). The minimum fluid charge is a function of input power. At 110% of nominal electrical supply
voltage, the minimum fluid charge is 1250 ml. On installations where overvoltage may occur, the minimum
fluid charge must be increased accordingly
1000 ml
Pump fluid type Flash point Auto-ignition point Molecular weight
DC704EU 221 °C 500 °C 484
Edwards L9 241 °C 370 °C 407
Table 5 - Construction consumables
Brazing Silver solder (Ag 40.5%)
3CR12 welds Bostrand 309L
M.I.G. brazing Bostrand 200 aluminium bronze
TIG ALI welding Saffire (5% Si)
Table 6 - Construction materials
Item Material specification Material description
Main body assembly 3CR12 11.5% chromium non-austenitic stainless
steel; high-temperature paint finish
Interior assembly LM25TF Aluminium alloy machined castings
304S12/15 Stainless steel thermal shields and tie-rod
Cool-cap (HT10) HC101 High-conductivity copper, 3CR12
3CR12 Electro-less nickel-plated
Cooling-coils HC101 High-conductivity copper, M.I.G. brazed to
body assembly
Electrical-box CR1 Mild steel, high-temperature paint finish
Radiation shield 304S12/15 Stainless steel, satin finish
Inlet and outlet O-rings and Co-Seals - Nitrile
Other O-rings and Co-Seals - Fluoroelastomer

B311-01-880 Issue K
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Technical data
Figure 3 - Pump dimensions (mm): HT10 shown
Key →ABCDEF G HIJK
ANSI
inlet ISO inlet EO inlet ANSI outlet ISO outlet EO outlet
HT10 790 406 370 419 158 295 140 471 152 95 130 127 220 118 197
HT16 1214 597 550 - 222 610 115 610 191 130 - 127 469 175 274