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.
All of the Modules in the iL system communicate through a serial data network. Each Module on
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
Содержание iL600
Страница 18: ...iL Dry Pumping Systems 1 9 Figure 1 3 Schematic diagram of the electrical system...
Страница 21: ...1 12 iL Dry Pumping Systems Figure 1 4 Services and electrical connections on the rear of the iL system...
Страница 23: ...1 14 iL Dry Pumping Systems Figure 1 5 Electrical components shown without enclosure for clarity...
Страница 71: ...3 28 iL Dry Pumping Systems...
