BOC Edwards EXT555H, Инструкция по эксплуатации

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Issue A Jun 01
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Refer to the fault finding section of the instruction
manual supplied with your EXC Controller or
EXDC Pump Drive Module for further fault finding
information.
Symptom Check Action
The pump does not rotate. After
pressing start - Fail LED not lit. Is the EXC Controller power LED
lit? If not, check that the electrical
supply is on, check that the switch
at the rear of the EXC Controller
is on, check the fuse in the rear of
the EXC Controller.
If all of the above are OK then the
EXC Controller is faulty. Consult
Edwards or your supplier.
Is the EXC Controller Start/Stop
LED flashing? If so, check that the correct links
are made on the EXC Controller
logic interface (refer to the
instruction manual supplied with
the EXC Controller).
Check that any system interlocks
are correctly made (refer to the
instruction manual supplied with
the EXC Controller).
Check that the pump-to-controller
lead is connected.
If all the above checks are OK then
consult BOC Edwards or your
supplier.
Is the EXC Controller first speed
indication LED lit? If not, the EXC Controller is
faulty. If lit, then the EXT pump is
faulty. Consult BOC Edwards or
your supplier.
The EXC Controller trips into Fail
- at any speed. Are the system interlocks
correctly connected? Ensure that the system interlocks
do not open after the EXT pump
has started.
The EXC Controller trips into Fail
during the ramp-up and before
50% speed is reached. Is the inlet pressure too high? Is
the backing pressure too high? If so, reduce the pumping load, or
check for a gross leak into the
system.
Is the EXT pump running too hot? Increase the cooling or decrease
the gas load. (Refer to Section 2
for maximum inlet pressure and
cooling requirements). Check that
external heat sources (such as
system bakeout heaters) are not
excessive.
Table 8 - Fault finding