Syringe Pump; Figure 2. Syringe Pump; Figure 3. Syringe Pump On/Off Button - Thermo Scientific LTQ Series Hardware Manual

Syringe Pump

Syringe Pump On/Off Button
Thermo Scientific
The LTQ Series mass spectrometer includes an electronically controlled, integrated syringe
pump (see Figure 2). The syringe pump delivers sample solution from the syringe into the
API source.
Figure 2. Syringe pump
LC Needle
union
When the syringe pump is operating, a motor drives the pusher block that depresses the
plunger of the syringe at a user-selectable rate. Liquid flows out of the syringe needle and into
the sample transfer line as the plunger is depressed. A syringe holder holds the syringe in
place.
For instructions about setting up the syringe pump, refer to the LTQ Series Getting Started
Guide.
The blue button located on the front panel above the syringe pump
syringe pump on and off. The motor has two speeds, normal and fast. The normal speed
produces the flow rate specified in the data system. Pressing and releasing the button turns on
the syringe pump and sets the motor speed to the normal speed. Pressing and holding the
button in causes the motor to move the pusher block at the fast speed; the motor maintains
the fast speed until you release the button or the pusher block reaches the end of its path.
When you release the button, the pusher block slows to normal speed. Pushing the button a
second time turns off the syringe pump.
Figure 3. Syringe pump on/off button
Syringe Syringe
holder
2
Functional Description
Syringe Pump
Pusher
block
(Figure 3) turns the
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