BOC Edwards A730-01-983, Инструкция по эксплуатации, Страница: 8 / 44

Issue A Nov 02
PAGE
2
XDS Dry Pump
INTRODUCTION
2
Figure 1 - XDS35i scroll pump
1. NW40 inlet port
2. Gas ballast control
3. Cooling fan
4. NW25 exhaust port
5. Fan connector
6. Rubber feet
7. Electrical connector
8. Voltage changeover switch cover
9. On/Off switch
10. 15 way connector
11. Hour counter
The pump mechanism is driven directly by a three
phase electric motor. The motor is controlled by an
inverter, which manages the supply of current to the
motor in accordance with operating conditions, and
allows the pump to be connected to a single phase
supply. The voltage changeover switch (beneath the
voltage changeover switch cover, refer to Figure 1,
item 8) must be set to the correct position in
accordance with the power supply being used, refer
to Section 3.5.2.
The XDS35i is designed to run from atmospheric
pressure however, if the inlet pressure exceeds
100 mbar for an extended period, the inverter may
reduce the motor speed. The pump will speed up
again after the pressure is reduced.
The pump is air-cooled by a fan (3) mounted at the
opposite end to the motor. The fan will run on for
one minute after the pump is switched off. The
XDS35i incorporates a thermal protection device
that will stop the motor in the event of thermal
overload e.g. high ambient temperature. The pump
will restart after it has cooled down.
The pump is mounted on rubber feet (6).
The pump is fitted with an hours counter (11), which
indicates the total time that the pump has run.