4 Switzer operating instructions pressure switch, model PS01-W1.
OI-PS01-W1 11/2016
Handling prior to fi tting
– Check the instrument connection thread size to avoid mismatch with pressure port.
Mounting / Connection / Precaution
1. Position gaskets / O ring correctly while the covers are fixed. Cover mounting
screws must be tight.
2. Properly seal the electrical entries and cables with correct weatherproof cable
gland.
3. Do not exceed stated maximum working pressure & maximum temperature. The
sensing element will be permanently damaged if the applied pressure exceeds the
maximum working pressure.
4. Connected electrical load should not exceed stated maximum electrical capacity
in both ampere and voltage.
5. Do not establish pressure connection by rotating the housing. Hold the hexagon of
the sensor with suitable spanner and tighten.
6. Flush the pipe system before fitting. Ensure that no stress is produced on the
sensor process connection and are sealed without leak.
7. Mount the instrument firmly and rigidly either directly on the pressure pipe line
or on a vibration free wall, panel or pipe barrier. The instruments are for vertical
mounting. Any tilt may lead to set point shift.
8. If process temperature is higher than the following permissible maximum
temperature it can be brought down by using longer pressure (impulse) piping.
Permissible ambient temperature
■
–10°C ... +60°C
Permissible medium temperature
■
–20°C ... +110°C for SS and Buna-N
■
–20°C ... +95°C for Neoprene
■
–20°C ... +130°C for EPDM
■
–20°C ... +200°C for Silicone
9. For steam application use condenser coil or a syphon
10. For air application, use proper filters (dust collectors) to ensure that the process
line is not clogged with accumulation of dust / foreign particles.
11. Ensure that suitable dampener / snubber is used in rapidly fluctuating pressure
input.
12. Necessary fasteners and mounting bracket are provided with the instrument for
panel / wall / 2“ pipe mounting option. Following items are provided
For panel / wall mounting : 2 screws
For 2“ pipe mounting : U bolt, nut, washeres and mounting bracket
2. Installation guidelines
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