BOC Edwards iL70 User manual

A533-71-880
Issue A
Manor Royal, Crawley, West Sussex, RH10 2LW, UK
Telephone: [phone] Fax: [phone]
http://www.bocedwards.com
iL Dry Pumping Systems
Instruction Manual

Declaration of Conformity
We, BOC Edwards,
Manor Royal,
Crawley,
West Sussex RH10 2LW, UK
declare under our sole responsibility that the product(s)
iL Dry Pumping Systems: iL70 iL600 iL70✝iL600✝
460 V, 60 Hz, 3-phase A533-71-908 A533-72-908 A533-74-908 A533-75-908
200/208 V, 50/60 Hz, 3-phase A533-71-945 A533-72-945 A533-74-945 A533-75-945
380/415 V, 50 Hz, 3-phase A533-71-946 A533-72-946 A533-74-946 A533-75-946
230 V, 60 Hz, 3-phase A533-71-957 A533-72-957 A533-74-957 A533-75-957
✝Sensor Configured Systems
to which this declaration relates is in conformity with the following standard(s)
or other normative document(s)
EN50081-2 Electromagnetic Compatibility, General Emission Standard.
Generic Standard Class: Industrial Environment.
EN50082-2 Electromagnetic Compatibility, General Immunity Standard.
Generic Standard Class: Industrial Environment.
EN 60204-1 Electrical Safety; Machines.
EN 1012-2 Compressors and Vacuum Pumps - Safety Requirements;
Part 2 - Vacuum Pumps.
following the provisions of
73/023/EEC Low Votage Directive.
89/336/EEC Electromagnetic Compatibility Directive
98/37/EC Machinery Safety Directive.
Dr. S. Ormrod, Technical Director Date and Place
This product has been manufactured under a quality system registered to ISO9001
P900-75-000 Issue F 2B01-010

A533-71-880
Setup Password
iL Dry Pumping Systems - Setup Password
The setup password for this equipment is preset as follows:
SETUP PASSWORD: 202
You can remove this sheet from the instruction manual and retain it in a safe place to prevent
unauthorised access to the setup menus in the iL system.

CONTENTS
Section Title Page
1 INTRODUCTION 1-1
1.1 Scope and definitions 1-1
1.2 Overview 1-2
1.2.1 The iL system 1-2
1.2.2 Applications 1-2
1.3 The LCDP dry pump 1-4
1.4 The LCDP gas system (sensor-configured iL systems only) 1-4
1.5 The LCMB mechanical booster pump (iL600 only) 1-5
1.6 Temperature control system 1-5
1.6.1 LCDP pump temperature control system 1-5
1.6.2 LCMB pump temperature control system (iL600 only) 1-6
1.7 Exhaust system 1-7
1.8 Electrical system 1-7
1.8.1 Introduction 1-7
1.8.2 Electrics and Pump Control Module 1-7
1.8.3 Sensor Monitoring Module (sensor-configured iL systems only) 1-15
1.8.4 Gas Module (sensor-configured iL systems only) 1-15
1.9 Controls and indicators 1-15
1.10 Control functions 1-16
1.10.1 Priority of control 1-16
1.10.2 Setpoints, warning and alarm conditions 1-17
1.10.3 Safety sensors 1-17
1.11 Pump Display Module (optional accessory) 1-18
1.12 Accessories 1-20
2 TECHNICAL DATA 2-1
2.1 General 2-1
2.2 Performance 2-1
2.3 Temperature control system 2-9
2.4 Cooling-water supply 2-9
2.5 Lubrication 2-10
2.5.1 LCDP pump 2-10
2.5.2 LCMB pump (iL600 only) 2-10
2.6 Electrical data 2-10
2.7 Gas system (sensor-configured iL systems only) 2-11
2.8 Construction materials 2-11
2.9 Default setpoints 2-12
2.10 Connections 2-12
2.11 Item Numbers 2-14
2.11.1 Standard iL systems 2-14
2.11.2 Sensor-configured iL systems 2-14
3 INSTALLATION 3-1
3.1 Safety 3-1
iL Dry Pumping Systems i
dcs/0017/0399

Section Title Page
3.2 Installation checklist 3-1
3.3 Unpack and inspect 3-3
3.4 Remove the enclosure panels 3-6
3.5 Reconfigure the nitrogen and cooling-water connections (if required) 3-6
3.6 Locate the iL system 3-10
3.7 Check the pump oil-levels 3-11
3.7.1 iL70 systems 3-11
3.7.2 iL600 systems 3-11
3.8 Install or replace the Pump Display Module and other optional
accessories (if necessary) 3-11
3.8.1 Install the Pump Display Module (optional) 3-11
3.8.2 Install other optional accessories 3-12
3.9 Connect the iL inlet to your vacuum system 3-12
3.10 Connect the iL exhaust outlet to your exhaust-extraction system 3-14
3.11 Connect to your factory extraction system (optional) 3-14
3.12 Connect the nitrogen supply (sensor-configured iL systems only) 3-15
3.13 Leak test the system 3-15
3.14 Install additional safety equipment (optional) 3-16
3.15 Connect to your emergency stop circuit (optional) 3-16
3.16 Electrical supply and RF earth (ground) connections 3-18
3.16.1 Reconfigure the iL system for your electrical supply (if necessary)3-18
3.16.2 Reconfigure the pump(s) for your electrical supply (if necessary) 3-18
3.16.3 Connect the electrical supply to the iL system 3-20
3.16.4 Connect an additional RF earth (optional) 3-22
3.17 Refit the enclosure panels 3-22
3.18 Connect the cooling-water pipelines 3-24
3.19 Commission the iL system 3-25
3.19.1 Switch on an iL70 system 3-25
3.19.2 Configure and switch on an iL600 system 3-26
4 PUMP DISPLAY MODULE MENUS AND DISPLAY FORMATS 4-1
4.1 Introduction 4-1
4.2 General operation 4-2
4.3 The CANCEL button 4-3
4.4 Display text and variable text 4-3
4.5 Wrap-around 4-4
4.6 Timeout 4-4
4.7 Menu structure 4-4
4.8 Example 4-4
5 OPERATION 5-1
5.1 Introduction 5-1
5.2 Change the display format 5-1
5.2.1 Change the normal display 5-1
5.2.2 Change the display units 5-2
5.3 Take and release control 5-2
ii iL Dry Pumping Systems

Section Title Page
5.4 Start-up 5-3
5.5 Check the nitrogen pressure and adjust if necessary
(sensor-configured iL systems only) 5-4
5.6 Monitor the status of the iL system 5-4
5.7 Warning and alarm indications 5-6
5.8 Manual shut-down 5-6
5.8.1 Normal manual shut-down 5-6
5.8.2 Fast manual shut-down 5-7
5.9 Automatic shut-down 5-7
5.10 Emergency stop 5-8
5.11 Restart the LCMB pump after automatic pump shut-down (iL600 only) 5-8
5.12 Restart the iL system after emergency stop or automatic shut-down 5-9
5.13 Operation of iL system components 5-9
5.14 Operation of the load-lock pump 5-10
6 MAINTENANCE 6-1
6.1 Safety 6-1
6.1.1 General requirements 6-1
6.1.2 Recommended purge method 6-2
6.2 Correct use of Swagelok connectors 6-2
6.2.1 Fit a Swaelok connector 6-2
6.2.2 Reconnect Swagelok connector 6-4
6.3 Maintenance frequency 6-4
6.4 Inspect the connections, pipelines, cables and fittings 6-4
6.5 Inspect and clean the exhaust-pipe and check-valve 6-5
6.5.1 Dismantle, clean and refit the exhaust-pipe 6-5
6.5.2 Clean and refit the check-valve (if fitted) 6-6
6.6 Check the LCMB pump oil-level (iL600 only) 6-8
6.7 Check the LCDP pump oil-level 6-9
6.8 Change the LCDP pump oil 6-10
6.9 Change the LCMB pump oil (iL600 only) 6-11
6.10 Adjust the Pump Display Module display viewing angle (if fitted) 6-11
6.11 Replace a fuse 6-12
6.12 Replace the Pump Display Module 6-12
6.13 Relocate the iL system for maintenance 6-13
6.14 Fault finding 6-14
6.14.1 Warning and alarm message fault finding 6-14
6.14.2 Other fault finding 6-14
6.15 Check for free rotation of the LCDP pump 6-25
7 STORAGE, DISPOSAL AND TRANSPORTATION 7-1
7.1 Storage 7-1
7.2 Disposal 7-1
7.3 Transportation 7-2
iL Dry Pumping Systems iii

Section Title Page
8 SERVICE, SPARES AND ACCESSORIES 8-1
8.1 Introduction 8-1
8.2 Service 8-1
8.3 Spares 8-2
8.4 Ordering Accessories 8-2
8.4.1 iL Enclosure Extraction Fan Kit 8-2
8.4.2 Pump Display Module 8-2
8.4.3 iL Pump Display Module extension cables 8-2
8.4.4 Active Gauge Connection Kit (sensor-configured iL systems only) 8-3
8.4.5 iL Interface Modules 8-3
8.4.6 iL PC Interface Kits 8-3
8.4.7 iL Central Monitoring System 8-4
8.4.8 iL600 Pressure Control Kit (sensor-configured iL systems only) 8-4
8.4.9 iL Communications Module 8-4
8.4.10 iL Alternative Nitrogen Connection Kit 8-4
RETURN OF BOC EDWARDS EQUIPMENT
Tables
Table Title Page
1-1 Safety sensors 1-18
2-1 Technical data 2-2
2-2 Full load current ratings 2-11
2-4 Sensor Monitoring Module default setpoints (sensor-configured iL systems only) 2-13
2-5 Gas Module default setpoints (sensor-configured iL systems only) 2-13
3-1 Installation checklist 3-2
3-2 Checklist of components 3-4
3-3 Pins in the iL Tool Interface Module plug 3-16
3-4 Pins in the electrical supply connector 3-22
4-1 Menu structure 4-5
5-1 Status menu display options 5-5
6-1 Warning messages 6-15
6-2 Alarm messages 6-20
6-3 Fault messages 6-22
6-4 Fault parameters 6-23
6-5 Fault types 6-26
Illustrations
Figure Title Page
1-1 The iL system (iL600 shown, with side panels removed) 1-3
iv iL Dry Pumping Systems

Illustrations (continued)
Figure Title Page
1-2 Schematic diagram of the LCDP pump gas system
(sensor-configured iL systems only) 1-5
1-3 Schematic diagram of the electrical system 1-9
1-4 Services and electrical connections on the rear of the iL system 1-12
1-5 Electrical components (shown without enclosure for clarity) 1-14
1-6 Controls and indicators on the front panel 1-16
1-7 Front panel of the Pump Display Module (optional accessory) 1-20
2-1 iL70 dimensions (mm) 2-3
2-2 iL600 dimensions (mm) 2-4
2-3 Services connections dimensions (mm) 2-5
2-4 Centre of mass dimensions (mm) and mass distribution 2-6
2-5 Typical pumping speeds for iL70: pumping speed against pressure 2-7
2-6 Typical pumping speeds for iL600: pumping speed against pressure 2-7
2-7 iL70 power curves: electrical power input against inlet pressure 2-8
2-8 iL600 power curves: electrical power input against inlet pressure 2-8
3-1 Remove the iL system from the pallet 3-4
3-2 Lifting-bolt positions 3-5
3-3 Remove/refit the enclosure panels 3-7
3-4 Reconfigure the cooling-water connections (if required) 3-9
3-5 Remove the vibration isolator transit brackets 3-10
3-6 Fit the Pump Display Module (optional accessory) 3-13
3-7 Leak-test port position 3-17
3-8 Reconfigure the iL system for your electrical supply (if necessary) 3-19
3-9 Reconfigure the pump-motor terminal-box (if necessary) 3-21
3-10 Connect the electrical supply cable to the connector mating-half 3-23
4-1 Front panel of the Pump Display Module (optional accessory) 4-2
4-2 Menu logic 4-6
4-3 Switch on menu 4-7
4-4 Switch off menu 4-8
4-5 Normal menu 4-9
4-6 Status menu: sheet 1 of 2 4-10
4-7 Control menu 4-12
4-8 Setup menu: sheet 1 of 3 4-13
4-9 Run til crash menu 4-16
4-10 Units menu 4-17
4-11 Normal display menu 4-18
4-12 Service menu: sheet 1 of 2 4-19
4-13 Serial menu 4-21
4-14 Zero sensors menu 4-22
4-15 Gas valve control menu 4-23
4-16 Manual menu: sheet 1 of 3 4-24
4-17 View Status menu: sheet 1 of 2 4-27
4-18 Messages menu 4-29
4-19 Warning and alarm messages menu 4-30
iL Dry Pumping Systems v

Illustrations (continued)
Figure Title Page
6-2 Retighten a Swagelok fitting 6-3
6-1 Fit a Swagelok fitting 6-3
6-3 Clean the exhaust check-valve 6-7
6-4 Try to turn the LCDP pump 6-24
vi iL Dry Pumping Systems

1 INTRODUCTION
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the BOC
EdwardsiL70andiL600DryPumpingSystems(abbreviatedtoiLsystemintheremainderofthis
manual). You must use the iL systems as specified in this manual.
Read this manual before you install and operate the iL system. Important safety information is
highlighted as WARNING and CAUTION instructions; you must obey these instructions. The
use of WARNINGS and CAUTIONS is defined below.
WARNING
Warnings are given where failure to observe the instruction could result in injury
or death to people.
CAUTION
Cautions are given where failure to observe the instruction could result in damage
to the equipment, associated equipment or process.
Throughout this manual, page, figure and title numbers are in the form 'S-N', where 'S' specifies
the section and 'N' specifies the number of the page, figure or table in the section.
The units used throughout this manual conform to the SI international system of units of
measurements. Also, throughout this manual, wherever nitrogen flow rates are specified, the
abbreviation 'slm' is used to mean 'standard l.min-1': this is a flow of 1 l.min-1 at an ambient
temperature of 0 oC and a pressure of 1013 mbar (1.013 x 105Pa).
The following symbols may appear on the iL system:
iL Dry Pumping Systems 1-1
PE
Caution - refer to accompanying
documentation.
Caution - risk of electric shock.
Caution - hot surfaces.
Caution - static sensitive devices.
Protective earth (ground)
RF earth (ground)

1.2 Overview
1.2.1 The iL system
The iL system operates at pressures between atmospheric and ultimate vacuum with no
lubricating or sealing fluid in the pumping chamber(s). This ensures a clean pumping system
without back-migration of oil into the system being evacuated.
The iL70 system has an LCDP70 dry pump; the iL600 system has an LCDP70 dry pump, with an
LCMB600 mechanical booster pump fitted to the inlet of the LCDP pump. Throughout the
remainderofthis manual, the LCDP70 pumpisreferredtoas the LCDP pump andtheLCMB600
pump is referred to as the LCMB pump.
Both the LCDP and LCMB pumps have enclosed, water-cooled motors. The iL system is
therefore suitable for applications in clean environments where fan cooling is unacceptable.
TwoversionsofiLsystemareavailable,sensor-configurediLsystemsandstandardiLsystems:
•Sensor-configured iL systems have: a gas system which introduces purge gas into the LCDP
shaft-seals; temperature sensors; other accessories (as described in the remainder of this
manual). Sensor-configured iL systems are suitable for use on light duty processes.
•StandardiLsystemshavenogassystem,temperaturesensorsorotheraccessories. Standard
iL systems are suitable for use on clean duty processes.
TheiLsystemis designed to operate as a sealed unit, chemicals passing through thepumpbeing
contained within the internal volume and separated from the external environment by a
mechanical barrier. This barrier is made up of a number of components of different materials,
(seeSection2.8),chosentoberesistanttoattackbychemicalsusuallyfoundincleanapplications.
Pumping a chemical that will aggressively attack any of these barrier materials may, over time,
result in the internal contents of the pump becoming exposed to the external environment ,
which may constitute a safety hazard. If in doubt contact BOC Edwards who will advise you as
to the suitability of this pump for any particular application.
Itisalsoafeatureofthispump design that the process gases are contained within the gearbox. If
hazardous materials are being pumped special precautions must therefore be taken before the
gearboxvolume isaccessed,detailsofthis aregiveninSection6. For thisreasonitisimportant to
refer to this section before adding oil or opening the gearbox to atmosphere.
On sensor configured iL systems the purge gas acts as a barrier to protect the gearbox from
process gas contamination. However, high pressure in exhaust pipe, exceeding that stated in
section 2, could lead to gearbox contamination which will reduce the service life of product.
You can manually control the iL system through a Pump Display Module accessory: see
Section 1.11. Alternatively, you can use your process tool or other control equipment to control
the operation of the iL system through an Interface Module accessory (refer to Section 8.4.5), or
throughan iLCommunicationsModuleaccessory (seeSection8.4.9),or youcanuse theiLSingle
Pumpset Monitor accessory to control the operation of the iL system (refer to Section 8.4.6). The
remainder of this manual describes the use of the Pump Display Module to operate the iL
1-2 iL Dry Pumping Systems
(Continued on page 1-4)

iL Dry Pumping Systems 1-3
Figure 1-1 - The iL system (iL600 shown, with side panels removed)
1. Inlet
2. LCMB oil filler-plug *
3. LCMB pump-motor/gearbox *
4. LCMB oil-level sight-glass *
5. Gas Module ✝
6. LCDP pump-motor/gearbox
7. LCDP oil filler-plug
8. Levelling-foot
9. Castor
10. LCDP oil-level sight-glass
11. LCDP pump
12. Nitrogen pressure regulator ✝
13. Pump Display Module #
14. Emergency stop switch
15. LCMB pump *
16. Outlet
17. Check-valve
18. Exhaust-pipe
* iL600 only
✝Sensor-configured iL systems only
# Optional accessory

system: for use of another accessory to operate the iL system, refer to the instruction manual
supplied with the accessory.
All of the components of the iL system are fitted inside an enclosure. Panels of the enclosure can
be removed for access to the pump(s) during maintenance.
The components of the iL system are described in Sections 1.3 onwards.
1.2.2 Applications
The iL system is suitable for use on clean and light duty applications, as described in
Section 1.2.1. If you use the iL system to pump gases that will aggressively attack any of the
internal components of the pump(s), this may eventually damage the pump(s), and result in the
leakage of gases from the iL system, or the leakage of air into the iL system; such leaks may
constitutea safetyhazard. TheiLsystem hasnopurgefacility intheswept volume,thereforethe
iL system must not be used to pump any gases that require dilution to ensure their safety.
Pumped process gases will be contained within the pump gearbox(es). Normal purge
procedures will purge the swept volume(s) of the pump(s), but will not purge the gearbox(es);
each gearbox is effectively a trapped volume.
For this reason:
•If you use the iL system to pump dangerous gases, you must take special precautions before
you remove the oil filler-plugs: refer to Section 6.1.2.
•YoumustnotusetheiLsysteminanapplicationwhereincompatiblegasesarepumped,one
after the other. If you do, the gases will mix in the gearbox(es).
If you use the iL system on an application for which it is not suitable, you may invalidate your
warranties. If in doubt, contact BOC Edwards who will advise you as to the suitability of the iL
system for any particular application.
1.3 The LCDP dry pump
The LCDP pump is a five-stage, positive displacement rotary pump in which pairs of
intermeshing rotors (of different profiles mounted on common shafts) are held in correct phase
relation by a pair of timing-gears. The timing-gears and the adjacent deep-groove ball-bearings,
are oil lubricated.
1.4 The LCDP gas system (sensor-configured iL systems only)
The LCDP pump in a sensor-configured iL system has a gas system which makes the iL system
suitable for use in light duty processes.
The gas system has supply pipelines and components (such as valves), a Gas Module with a
pressure transducer, a solenoid-valve, and a pipeline which delivers purge nitrogen to the
shaft-sealsintheLCDPpump. Theshaft-sealspurgeflowisonwhenevertheLCDPpumpison.
Refer to Figure 1-2 which shows a schematic diagram of the iL gas system.
1-4 iL Dry Pumping Systems

The purge flow pressure is controlled by the pressure regulator (7), and the purge flow to the
shaft-seals (2) is switched on and off by the solenoid-valve (5).
The pressure transducer (6) monitors the pressure of the shaft-seals purge flow. The output of
the pressure transducer is used to display the shaft-seals purge pressure on the Pump Display
Module (if fitted).
The front panel has two pressure status LEDs (Figure 1-6, items 4 and 5). These LEDs show
whether the nitrogen supply pressure is too high, too low or is in the acceptable range: refer to
Section 5.5.
1.5 The LCMB mechanical booster pump (iL600 only)
The LCMB pump is a positive displacement Roots vacuum pump. The pump mechanism is
driven directly by a three-phase electric motor. The LCMB operates at inlet pressures of 5 mbar
(5x102Pa)andbelow,and isbackedby theLCDPpump. Whenyoustart theLCDPpump,theiL
system delays the start of the LCMB pump for a preset time, to allow the LCDP pump to reduce
the pressure in the process system to below the maximum inlet pressure for the LCMB pump.
1.6 Temperature control system
1.6.1 LCDP pump temperature control system
Theheadplate and the pump-motor/gearbox of the LCDPpump have a direct cooling system in
which water flows around these parts of the pump. All other stages of the pump are air-cooled
by natural convection and radiation.
(Continued on page 1-6)
iL Dry Pumping Systems 1-5
Figure 1-2 - Schematic diagram of the LCDP pump gas system
(sensor-configured iL systems only)
1. LCDP pump
2. Shaft-seals
3. Shaft-seals purge pipeline
4. Restrictor
5. Solenoid-valve
6. Pressure transducer
7. Pressure regulator
8. Check-valve
9. Nitrogen supply inlet

The pump-motor is cooled by water which flows through a cooling jacket which surrounds the
motor. The cooling-water supply and return pipelines are connected to the iL system by
connectors on the end of the iL system (see Figure 1-4).
The cooling-water manifolds on the pump distribute the cooling-water to the pump cooling
circuit and to the pump-motor cooling circuit (and to the LCMB pump-motor cooling circuit, on
an iL600 system).
On sensor-configured iL systems only:
•A thermocouple is fitted to the pump-body to measure the temperature of the pump-body.
The output of the thermocouple is monitored by the iL system: see Section 1.8.3.
•A surface temperature sensor (Figure 1-5, item 7) is fitted to the pump-motor water
manifold. The output of the sensor is monitored by the iL system and is used to provide a
warning of cooling system failure.
•A water flow-switch is fitted in the pump-motor water manifold. The output of the
flow-switch is monitored by the iL system and provides an indication of low water flow
through the pump.
Forsafetyreasons,athermal snap-switch is fitted to the pump-motor water manifold block. The
snap-switchopensat 60 oC. The snap-switch output is connected to theinternal emergency stop
circuit (see Section 1.10.3) and will shut down the iL system if the snap-switch has operated.
A motor-protection thermistor is fitted to the pump-motor. This thermistor is a solid-state
device which has an electrical resistance of less than 750 Ωat normal pump-motor operational
temperature. Whenthepump-motoristoo hot, the electrical resistance rises quickly to >2000Ω.
The thermistor is connected to the emergency stop circuit to shut down the iL system if the
pump-motor is too hot.
1.6.2 LCMB pump temperature control system (iL600 only)
The LCMB pump is cooled by ambient air. The pump-motor is cooled by water which flows
through a cooling jacket which surrounds the pump-motor. The pump-motor cooling-water
supply and return pipelines are connected to the cooling-water manifold on the LCDP pump.
On standard iL systems only, for safety reasons, a thermal snap-switch is fitted to the pump-
stator. The snap-switch opens at 120 oC. The output of the snap-switch is connected to the
internal control system and will temporarily switch off the LCMB pump and allow it to cool
down if the snap-switch has operated.
On sensor-configured iL systems only, a temperature sensor probe (Figure 1-5, item 16) is fitted
in the stator of the pump. The output of the sensor is monitored by the iL system and is used to
provide a warning that the pump has been operating at maximum inlet pressure for longer than
the specified time (see Table 2-1) and is overheating. If the temperature continues to rise, the
internal control system will temporarily switch off the LCMB pump and allow it to cool.
1-6 iL Dry Pumping Systems

A motor-protection thermistor is fitted to the pump-motor. This thermistor is identical to that
fitted to the LCDP pump (see Section 1.6.1). The thermistor is connected to the internal control
system and will temporarily switch off the LCMB pump and allow it to cool down if the
pump-motor is too hot.
1.7 Exhaust system
The final stage of the LCDP pump is a positive displacement Roots stage, which attenuates the
gas pressure pulses from the claw stages in the pump. This pump configuration reduces
pump-induced resonance in your exhaust-extraction system and removes the need for an
exhaust silencer.
The outlet of the LCDP pump is connected to an exhaust-pipe, which is below the pump. The
outlet of the exhaust pipe has a check-valve which prevents the suck-back of exhaust vapours
after the iL system is shut down. The check-valve also provides additional attenuation of the
pulses in the exhaust pressure.
1.8 Electrical system
Refer to Figure 1-3 which shows a schematic diagram of the electrical and control system.
1.8.1 Introduction
The sensor-configured iL system has an Electrics and Pump Control Module (1), a Sensor
Monitoring Module (3), a Gas Module (2), an optional Pump Display Module (4), sensors and
accessories (see previous sections).
The standard iL system has an Electrics and Pump Control Module (1) and an optional Pump
Display Module (4).
Optionally, the iL system may have an LCMB pump, an iL Interface Module, an iL
Communications Module, and other accessories.
AlloftheModulesintheiLsystemcommunicatethroughaserialdatanetwork. EachModuleon
the network has a microprocessor, which controls the network communications and also
contains the default setpoints for the sensors in or connected to the Modules (see Section 2).
1.8.2 Electrics and Pump Control Module
Note: The operation of a safety sensor will have the same effect as the operation of the emergency stop
switch: see Section 1.10.3.
Refer to Figure 1-3. The external electrical supply (5) is connected to the electrical supply
connector (6) on the Electrics and Pump Control Module (1). The Electrics and Pump Control
Module switches the electrical supplies to the LCDP pump and to the LCMB pump (on an iL600
system) and monitors the operation of the pump(s). The Module also provides the electrical
supplies to the other Modules in the iL system.
(Continued on page 1-10)
iL Dry Pumping Systems 1-7

1-8 iL Dry Pumping Systems
Figure 1-3 - Schematic diagram of the electrical system: key
1. Electrics and Pump Control Module
2. Gas Module *
3. Sensor Monitoring Module *
4. Pump Display Module ▲
5. External electrical supply
6. Electrical supply connector
7. Protective earth (ground) stud
8. GRC relay connector #
9. Tool Interface Module connector
10. Control PCA
11. iL Tool Interface Module fuse holder
12. Emergency stop fuse holder
13. LCDP electrical supply
14. LCDP motor terminal-box
15. LCDP motor thermistor cable
16. LCMB electrical supply ✝
17. LCMB motor terminal-box ✝
18. LCMB motor thermistor cable ✝
19. RF earth (ground) stud
20. Cooling-fan connector
21. Internal emergency stop loop
22. LCMB shut-down thermal snap-switch ▼
23. LCDP shut-down thermal snap-switch
24. Not used
25. Emergency stop switch
26. Not used
27. Gas Module and Sensor Monitoring
Module electrical supply *
28. LCMB temperature sensor #✝
29. LCDP motor water manifold surface
temperature sensor
30. Shaft-seal pressure transducer *
31. LCDP body thermocouple *
32. Not used
33. Not used
34. Water flow-switch *
35. LON connector
36. Not used
37. Not used
38. 25-way 'D' type connector
39. Solenoid-valve *
40. Pressure transducers *
41. Active gauge cable connector
42. Front panel LEDs
43. Front panel 10-way connector
44. 4-way XLR connector
45. Active Gauge connector *
46. Rear panel
47. d.c. electrical supply fuse holder
* Sensor-configured iL systems only.
✝iL600 only.
▲Optional accessory.
▼Standard iL600 systems only.
# Not used on iL systems.

iL Dry Pumping Systems 1-9
Figure 1-3 - Schematic diagram of the electrical system

The Module has contactors for the LCDP pump and the LCMB pump (on an iL600 system),
pumppowerandcurrentconsumptionsensorsandshort-circuitprotection. Internalclocksand
counters in the Module measure the operating time of the iL system and keep count of the
number of iL system switch-on/switch-off and process cycles. The Module also has a
transformer and fuses for the 24 V control circuits and fuses for the following supplies: iL
Interface Module (11), emergency stop circuit (12) and d.c. electrical supply (47). Three
thermal-type, self-resetting fuses in the Electrics and Pump Control Module protect the d.c.
electrical supplies to the network.
Refer to Figure 1-4 detail D. The rear panel of the Electrics and Pump Control Module has the
following lamp and connections:
Power on lamp (7) This lamp is on when the electrical supply to the
Electrics and Pump Control Module is on.
Tool Interface Module
connector (8) Use this to connect an iL Tool Interface Module to the iL system.
LON Interface Connector (9) Use this to connect the iL system to a network.
Electrical supply connector (10) Use this to connect your external electrical supply to the
iL system: refer to Section 3.16.3.
Protective earth (ground) stud (11) If required, use this to make additional protective earth
(ground) connections: refer to Section 3.16.3.
GRC relay connector (12) Not used on iL systems.
Fuse holder F7 (13) This holds the fuse which protects the d.c. electrical
supply.
Fuse holder F9 (14) This holds the fuse which protects the emergency stop
circuit.
Fuse holder F8 (15) This holds the fuse which protects the iL Interface
Module (if fitted).
Refer to detail E. Fuses inside the Module (16 to 21) protect the internal circuits of the Module.
You cannot change these fuses; a BOC Edwards service engineer must change these fuses.
1-10 iL Dry Pumping Systems

iL Dry Pumping Systems 1-11
Figure 1-4 - Services and electrical connections on the rear of the iL system: key
1. Blanking panel
2. Cooling-water outlet
3. Cooling-water inlet
4. Nitrogen inlet *
5. Position of Active Gauge connector *
6. RF earth (ground) stud
7. Power on lamp
8. Tool Interface Module connector
9. LON interface connector
10. Electrical supply connector
* Sensor-configured iL systems only
=
iL600 only
11. Protective earth (ground) stud
12. GRC relay connector #
13. d.c. electrical supply fuse holder (F7)
14. Emergency stop fuse holder (F9)
15. Tool Interface Module fuse holder (F8)
16. Fuse F6
17. Fuse F5
18. Fuse F4
19. Fuse F1
20. Fuse F2
21. Fuse F3
#Not used on iL systems
A iL70
B iL600
C Rear panel
D, E Detail of Electrics and Pump Control Module