Yamato Scientific Vacuum controller Vacuum controller - Manual (Page 11)

9
Handling Precautions
Warning Warning Warning Warning
Approaching Thunderstorm
•
If a thunderstorm approaches in the distance, immediately turn off the power at the rear panel and shut
off the supply power. Leaving the power turned on may cause a fire or electrical shock.
During Power Failure
•
In case of power failure, the leak valve opens, the atmosphere in the system of the rotary evaporator is
released, and the solenoid valve for control is shut. It prevents spout of organic solvent in distillation,
and back-flow of water from the aspirator.
•
After power failure was repaired, the set mode is automatically switched to the fixed value control. The
indicator displays the set pressure blinking. The leak valve opens and the solenoid valve for control
shuts.
•
The product is not interlocked with neither the rotary evaporator nor bath. Care should be taken that
each movement of them is not the same after the power failure. If power failes while the evaporator is
revolving, it starts revolving after power failure was repaired.
•
Make sure that the aspirator and the cold circulating device etc. is working properly when you start
the vacuum control again.
Aspirator Shutdown
•
The device must be stopped before you stop the aspirator. If not,back- flow ,from the aspirator's bath to
the pressure senser,may occur.In case of back-flow, the indicator may not display accurate values,or
the sensor may be damaged.
Using the Product
•
The product is not a pressure measurement apparatus. Do not use it for calibration.
•
There are not functions for vacuum and pressure raising in the product itself. The product is used to
control the pressure in the system. The operation runs in order to reach to the pressure which is set
depending on the rise of pressure, by connecting to a decompression device of aspirator etc. The rise
of pressure (depending on the steam pressure of sample) is that occurs when the rotary evaporator
operates distillations.
Corrosive Samples
•
The product's connections to gas are made of materials given in Table 1. Especially metal piping parts
and gas-joint for pressure sensor are corroded by strong acids and strong alkalines. Do not use the
product for distillation of strong acids and strong alkalines.
•
As the product's gas-joints are exposed to low-concentrated steam that can not be trapped by the
condenser (cooler),the joints are not corroded soon. However a sort of rubber might swell depending
on the kind of solvent or frequency of use. If pressure in the system is not held,or,an abnormality is
shown the indicator ,please contact us.
•
Make sure that vacuum hoses are connected correctly ,to ｢pressure｣ and to｢load｣.