INFICON Cool Drawer Single Sensor - Manual (Page 37)

3 - 1
PN
07
4-
60
9-
P1
A
Cool Drawer Single and Dual Sensors Operating Manual
Chapter 3
Installation of the Solenoid Valve
3.1 Introduction
The solenoid valve (PN 750-420-G1) and the feedthrough should be installed at
the same time. The same solenoid valve is used for both the 2.54 cm (1 in.) and
the 7 cm (2-3/4 in.) feedthroughs.

For Installation with 2.54 cm (1 in.) Bolts Feedthrough, see section 3.2 .
 For Installation with 7 cm (2-3/4 in.) Feedthrough, see section 3.3 .
NOTE: The air line is 3.175 mm (1/8 in.) as measured on the atmosphere side of
the feedthrough. A user supplied connection from the air supply tube on
the solenoid valve to the air tube on the Cool Drawer sensor is required.
3.2 Installation with 2.54 cm (1 in.) Bolts Feedthrough
Follow the steps below:
1 Ensure that the O-ring is in place on the bolt.
2 Insert the 2.54 cm (1 in.) bolt such that the hexagonal shaped end of the bolt is
on the vacuum side of the chamber.
3 Add the bracket.
4 Add the washer.
5 Add the feedthrough nut.
6 Tighten the feedthrough nut.
7 Connect the 3.175 mm (1/8 in.) air tube from the "A" port of the solenoid valve
to the air tube on the feedthrough, see
Figure 3-1 on page 3-3 .
NOTE: The air line is 3.175 mm (1/8 in.) as measured on the atmosphere side
of the feedthrough. A user supplied connection from the air supply tube
on the solenoid valve to the air tube on the Cool Drawer sensor is
required.
8 Attach the "P" port of the solenoid valve to a source of air between
55 PSIG (70 PSIA) (3.8 bar) [379 kPa] and 60 PSIG (75 PSIA) (4.1 bar)
[414 kPa], see
Figure 3-1 on page 3-3 .
WARNING
Do not exceed 100 PSIG (115 PSIA) (6.9 bar) [689 kPa].
Connection to excessive pressure may result in personal
injury or equipment damage.