System Shutdown, Startup, and Reset
Shutting Down the System Completely ___________________________________________
3-4
____________________ LCQ Deca XP Plus Hardware Manual ________________
3.3 Shutting Down the System
Completely
The XP Plus system does not need to be shut down completely if you are not
going to use it for a short period of time, such as overnight or over a weekend.
(See the topic Placing the System in Standby Condition, above.) Shut down
the system completely only if it is to be unused for an extended period or if it
must be shut down for a maintenance or service procedure.
Use the following procedure to shut down the XP Plus system completely:
1. Turn off the flow of sample solution from the LC (or other sample
introduction device).
2. From the Tune Plus window, choose
Control | Off
to put the MS
detector in Off condition
.
When you choose Control | Off, the XP Plus
turns off all high voltage, and the sheath and auxiliary gas.
3. Place the electronics service switch, located on the power panel (see
Figure 3-1 on page 3-2), in the Service Position. Power to the
non-vacuum system electronics is turned off when you place the
electronics service switch in the Service Position.
4. Place the main power circuit breaker switch, located on the power panel
(see Figure 3-1) in the Off (O) position. When you place the main power
circuit breaker switch in the Off (O) position, the following occurs:
•
All power to the MS detector, including the turbomolecular pump and
the rotary-vane pumps, is turned off. (All LEDs on the front panel of
the MS detector are off.)
•
The battery backup on the Vent Delay PCB provides power to the
vent valve for 30 s. After 30 s, a circuit on the Vent Delay PCB times
out, and power to the vent valve solenoid is shut off. When power to
the vent valve solenoid is shut off, the vent valve opens and the
vacuum manifold is vented to atmosphere through a filter. You can
hear a hissing sound as the air passes through the air filter.
•
After about 2 min, the vacuum manifold is at atmospheric pressure.
Note. For instructions on how to operate the LC from the front panel, refer
to the manual that came with the LC.
CAUTION. Allow heated components to cool before you service them.
Summary of Contents for LCQ Deca XP Plus
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