BOC Edwards Q Series User manual

A528-50-880
Issue D
Manor Royal, Crawley, West Sussex, RH10 9LW, UK
Telephone: [phone] Fax: [phone]
http://www.bocedwards.com
QDP Accessories:
Q Series 3 Exhaust Pressure Module
Description Item Number
Q Series 3 Exhaust Pressure Module A528-50-000
Instruction Manual

CONTENTS
Section Title Page
1 INTRODUCTION 1
1.1 Scope and definitions 1
1.2 ATEX directive implications 1
1.3 Description 2
2 TECHNICAL DATA 4
3 INSTALLATION 6
3.1 Unpack and inspect 6
3.2 System design 6
3.2.1 Inlet-purge 6
3.2.2 Exhaust pressure-switches 7
3.3 Configure the Q Series 3 Exhaust Pressure Module (if necessary) 7
3.4 Install the Exhaust Pressure Module on the pump 10
3.5 Make the electrical connections 12
3.6 Connect the nitrogen supply 13
3.7 Leak-test the system 13
4 OPERATION 14
5 MAINTENANCE 14
6 STORAGE AND DISPOSAL 14
6.1 Storage 14
6.2 Disposal 14
RETURN OF BOC EDWARDS EQUIPMENT
Illustrations
Figure Title Page
1 Schematic diagram of the Q Series 3 Exhaust Pressure Module 3
2 Q Series 3 Exhaust Pressure Module dimensions (mm) 5
3 Schematic wiring diagram of the Q Series 3 Exhaust Pressure Module 8
4 Configuration label 9
5 Q Series 3 Exhaust Pressure Module : front panel 11
6 Q Series 3 Exhaust Pressure Module : rear view 11
Q Series 3 Exhaust Pressure Module i
Ipsitech 8105-03

Tables
Table Title Page
1 Checklist of components 6
2 Electrical connector pin usage (as supplied) 12
Associated publications
Publication title Publication Number
Q Controller A380-00-880
QDP Gas Module A528-05-880
QDP Drystar Pumps A528-40-880
ii Q Series 3 Exhaust Pressure Module

1 INTRODUCTION
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the BOC
Edwards Q Series 3 Exhaust Pressure Module accessory for the QDP Drystar Pumps.
Read this manual before you install and operate your Q Series 3 Exhaust Pressure Module.
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 and process.
1.2 ATEX directive implications
This equipment is fitted with the ATEX compliance label shown above. This only applies when
the Exhaust Pressure Module is fitted to the QDP pump. The ATEX directive does not apply to
the Exhaust Pressure Module on its own.
For full details regarding the ATEX directive, see the QDP Drystar Vacuum Pumps instruction
manual: A528-40-880 (Issue P or later).
For further information, please contact BOC Edwards: refer to the Addresses page at the end of
this manual for details of your nearest BOC Edwards company.
Q Series 3 Exhaust Pressure Module 1

1.3 Description
The Q Series 3 Exhaust Pressure Module is intended for use with a BOC Edwards QDP Drystar
Pump fitted with a QDP Gas Module. The Q Series 3 Exhaust Pressure Module provides the
following nitrogen supplies to the QDP pump :
•Exhaust-purge
•Inlet-purge.
Nitrogen gas is routed to the pump through 1/4inch pipelines. A schematic diagram of the
Q Series 3 Exhaust Pressure Module is given in Figure 1.
The nitrogen supply for the inlet-purge is connected to the front of the Exhaust Pressure Module.
The nitrogen supply passes through a solenoid-valve inside the Module and is then connected to
the QDP pump. The inlet-purge can be switched on and off by this valve which is controlled by
your control equipment.
The nitrogen supply for the exhaust-purge comes from the auxiliary nitrogen outlet on the QDP
Gas Module. This auxiliary nitrogen outlet is connected to the exhaust-purge nitrogen inlet on
the Exhaust Pressure Module. The pressure in this pipeline is monitored by two
pressure-switches (with gold contacts) in the Exhaust Pressure Module. One pressure-switch
gives a pressure warning signal and the other pressure-switch gives an over-pressure signal.
These signals are used to control the electrical supply and the nitrogen supply to the QDP pump.
The 17-way connector at the end of the electrical cable (which is on the back of the Exhaust
Pressure Module) is connected to the auxiliary connector on the QDP Gas Module. The electrical
supply for the inlet-purge solenoid-valve comes through this cable. This cable also carries the
signals from the pressure-switches, which pass back through the Gas Module and are available
on the 19-way connector on the Gas Module.
2Q Series 3 Exhaust Pressure Module

Q Series 3 Exhaust Pressure Module 3
Figure 1 - Schematic diagram of the Q Series 3 Exhaust Pressure Module
1. 17-way electrical connector
2. Exhaust pressure-switch (warning)
3. Restrictor
4. Exhaust-purge nitrogen inlet (from QDP Gas Module)
5. Exhaust-purge nitrogen outlet (to QDP pump)
6. Exhaust pressure-switch (over-pressure)
7. Inlet-purge nitrogen outlet (to QDP pump)
8. Check-valve
9. Solenoid-valve
10. Inlet-purge nitrogen inlet
11. Snubbing restrictor
Electrical cables
Gas lines

2 TECHNICAL DATA
Dimensions See Figure 2
Mass 1.5 kg
Maximum ambient operating temperature 40 oC
Nitrogen supply connection 1/4inch Swagelok fittings
17-way electrical connector CA3106E20-29P/F80
Solenoid-valve
Operating voltage 24 V a.c., 50 or 60 Hz
Rating 50 Hz 60 Hz
Holding 18 VA 15 VA
Inrush 29 VA 24 VA
Exhaust pressure-switches
Electrical supply 24 V a.c. or 24 V d.c.
Switch rating (24 V a.c. supply)
Maximum current 1 A inductive
1 A resistive
Minimum current 20 mA
Switch rating (24 V d.c. supply)
Maximum current 0.5 A inductive
1 A resistive
Minimum current 20 mA
Operating pressure
Warning 5.0 psi ±0.6 psi
Over-pressure 8.0 psi ±0.6 psi
Hysteresis (maximum) 1.3 psi
Maximum inlet-purge pressure 10 psig
4Q Series 3 Exhaust Pressure Module

Q Series 3 Exhaust Pressure Module 5
Figure 2 - Q Series 3 Exhaust Pressure Module dimensions (mm)

3 INSTALLATION
3.1 Unpack and inspect
Remove all packing materials and protective covers and check the Q Series 3 Exhaust Pressure
Module.
If the Q Series 3 Exhaust Pressure Module is damaged, notify your supplier and the carrier in
writing within three days; state the Item Number of the Exhaust Pressure Module together with
your order number and your suppliers invoice number. Retain all packing materials for
inspection. Do not use the Q Series 3 Exhaust Pressure Module if it is damaged.
Check that your package contains the items listed in Table 1. If any of these items is missing,
notify your supplier in writing within three days.
Table 1 - Checklist of items
If the Q Series 3 Exhaust Pressure Module is not to be used immediately, replace the protective
covers. Store the Q Series 3 Exhaust Pressure Module in suitable conditions, as described in
Section 6.1.
3.2 System design
WARNING
You must incorporate the design features detailed below in your system. If you do not,
you can cause injury to people and damage to your equipment.
3.2.1 Inlet-purge
To ensure that your vacuum system cannot be over-pressured by the nitrogen supply to the
inlet-purge, you must design your vacuum and control systems so that :
•the parts of your vacuum system which are not suitable for positive pressures are isolated
when the pump is not in use and the inlet-purge nitrogen supply is switched on
or :
•the electrical supply to the inlet-purge solenoid-valve (through the Gas Module) is
connected so that the valve is closed when the QDP pump is switched off.
6Q Series 3 Exhaust Pressure Module
Qty Check (✓)
Description
1
1
1
❏
❏
❏
Q Series 3 Exhaust Pressure Module
Fitting-kit
Connecting pipe

3.2.2 Exhaust pressure-switches
Both normally-open and normally-closed outputs are available from the pressure-switches. To
ensure that the exhaust pressure is monitored correctly, you must connect the signal outputs
from the exhaust pressure-switches so that :
•the warning signal gives an indication that the pressure of the exhaust-purge nitrogen
supply is too high
•the over-pressure signal switches off the pump. (Note that, if you have installed your Gas
Module correctly, this will also switch off the nitrogen supply to the Gas Module.)
3.3 Configure the Q Series 3 Exhaust Pressure Module (if necessary)
CAUTION
If you reconfigure the Exhaust Pressure Module, ensure that all the electrical connections
are secure before you use the Exhaust Pressure Module.
The Q Series 3 Exhaust Pressure Module as supplied is configured for use with control systems
which require individual common wires to each pressure-switch. This configuration is shown in
Figure 3, detail A. Text on the back panel of the Q Series 3 Exhaust Pressure Module identifies
this configuration (see Figure 4, detail A), which is suitable for use with Q Controllers with Item
Numbers A381-xx-xxx.
If you want to use the Q Series 3 Exhaust Pressure Module with a Q Controller with an Item
Number of A380-xx-xxx, you must reconfigure the Exhaust Pressure Module so that the
pressure-switches have a shared common wire; use the following procedure:
1. Remove the cover from the Q Series 3 Exhaust Pressure Module.
2. Refer to Figure 3. Unplug the link lead (4) from the parking terminal (3) and unplug the male
connector from the male/female connector on the lead.
3. Unplug wire 8 from the common terminal on the warning pressure-switch (5). Plug wire 8
onto the parking terminal (3).
4. Unplug wire 7 from the common terminal on the over-pressure pressure-switch (6).
5. Plug the male connector on the link lead onto the common terminal on the over-pressure
pressure-switch (6).
6. Plug the male/female connector on the link lead onto the common terminal on the warning
pressure-switch (5).
7. Plug wire 7 (removed from the pressure-switch in Step 4 above) onto the male/female
connector on the link lead.
8. Peel off one of the self-adhesive labels from the inside of the cover of the Q Series 3 Exhaust
Pressure Module. Place the label over the configuration text on the rear panel of the Q Series
3 Exhaust Pressure Module: refer to Figure 4, detail B.
9. Refit the cover on the Q Series 3 Exhaust Pressure Module.
Q Series 3 Exhaust Pressure Module 7