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Replacing A Solenoid Valve - Siemens Maxum II Reference Manual

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Electronic Compartment Component Descriptions and Maintenance Procedures
2.8 Solenoid Valves
Table 2-8
Switching Speed (Maximum response time on/off ms)
3-way non-latching
Operating Voltage
Pressure Range, 3-way
Pressure Range, 4-way
Vacuum Range
Ambient Temperature Range
Operation Test
1. Using a fine-pointed object, press Solenoid Valve red button.
2. When pressed, pressure is applied to the piston that moves to either the open or closed
position. Resulting pressure is then applied to the column or sample valve.
3. If piston does not operate when the button is pressed, check for correct gas pressure.
4. If piston does not operate and pressure is 75 psig, Solenoid Valve is defective and must
be replaced.
5. Repeat for each valve operating on and off. Allow at least 1 second between button presses.

Replacing a Solenoid Valve

The solenoid valves are mounted on either the floor or back of the electronic enclosure,
depending on configuration. Valves are replaced individually. The Solenoid Valve
Replacement Kit is available as part number 2020149-001.
Voltage dangerous to life exists. Failure to follow proper procedures may result in equipment
damage, personal injury or death.
Before performing the removal and installation procedures, turn off primary AC power to the
Maxum II from the main circuit breaker. Observe all site safety requirements before
performing any repair or maintenance on the Maxum II.
25 to 100psi
25 to 100psi
0 to 27" of Hg
-18°C to 65°C
-0.4°F to 149°F (dry air)
≤ 50 microLiter/min, air @ 69.8?F (21°C) with 50psig on the
common port.
Maxum II Reference Manual
Manual, 7/2017, 2000596-001


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