STP-301/451 Series Instruction Manual
12-1
Troubleshooting
12 Storage and Disposal
12.1 Storage of the STP Pump
When the STP pump is left unused over a long period (more than a few months), follow the
precautions below:
1) Close the inlet port of the STP pump and vacuum it using an auxiliary pump.
2) Introduce dry N
2
gas or dry air from the outlet port or the purge port.
3) Close the outlet port and purge port.
4) If the STP pump is water cooled, introduce compressed air from one side of the cooling
water port so that no water remains in the STP pump.
5) Store the STP pump in a vertical position.
6) DO NOT store the STP pump in the following places:
• Place of high humidity.
(If it must be stored in a place of high humidity, insulate it from the outside and use
a dehumidifying agent.)
• Place of high temperatures (more than +55°C) and low temperatures (less than
-25°C).
• Place where there are corrosive gases.
• Place subjected to dripping water.
• Place with a lot of dust.
• Place with insufficient ventilation.
• Place subjected to strong magnetic or electric fields.
• Place subjected to radiation.
12.2 Storage of the STP Control Unit
If the STP control unit (including cables) is not used for a long period (more than a few
months), follow the precautions below:
1) Store the STP control unit in a horizontal position.
2) DO NOT store the STP control unit in the following places:
• Place of high humidity.
(If it must be stored in a place of high humidity, insulate it from the outside and use
a dehumidifying agent.)
• Place of high temperatures (more than +55°C) and low temperatures (less than
-25°C).
• Place subjected to direct sunlight.
• Place where there are corrosive gases.
• Place subjected to dripping water.
• Place with a lot of dust.
• Place of insufficient ventilation.
• Place subjected to strong magnetic or electric field.
• Place subjected to radiation.
• Place subjected to mist.
• Place with electric noise.
• Place with vibration.
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