10
(4) Operations
1. Risks and Safety Measures upon Operations
Warning
Avoid this
action
Do not apply any shock to the glass bell jar,
and avoid heating it to 50°C or higher.
In a case of explosion upon vacuum condition,
the exploded pieces will spread.
This may cause a serious damage to the product.
Check
ventilation
Please make sure to ventilate the room when
using liquid nitrogen.
The nitrogen can potentially reduce the
oxygen in the room.
This may cause an oxygen deficiency accident.
Caution
Wear gloves
When using liquid nitrogen, wear gloves to
protect your hands.
If liquid nitrogen splashes and adheres to your skin, you
may feel acute pain momentary.
Confirm
complete close
After confirming complete closure of the main
valve, let out the air in the bell jar
If air comes into the oil diffusion pump during operation,
it deteriorates the oil and lowers the performance.
Operation failure of the three-way valve may occur.
An inflow of air during liquid nitrogen injection will cause
condensable gases to adhere to the trap excessively,
thus degrading the performance.
Exchange
confirmation
Please carefully be aware that there is a
possibility that the oil level gauge will be blown
off by switching on the pump without changing
the cap.
