Ulvac DOP-181S Series, Инструкция по эксплуатации

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4. Cautions for Operation
4.1 Cautions for Operation
See "Danger" (1) and (2) on p.04.
See "Warning"(9), (16), (17) and (18)
on p.04 and p.05.
See "Caution"(3), (4), (5), (6), (7) and
(8) on p.06.
See "Note" (3), (4), (5), (6) and (7) on
p.07.
4.2 Operation of the Thermal Protection relay
If the thermal protector operates, switch off the main power supply immediately and contact
the manufacturer. The motor will be extremely hot and should not be touched under any
circumstances.
When the cause of the problem has been eliminated, check that the motor has cooled, switch
on the main power supply, and check that the pump is operating.
Table 4-1 Characteristics of the thermal protector
Operation temperature 120±5
℃
Reset temperature 77±15
℃
See "Caution"(5), (6), and (9) on p.06.
Immediately switch off the main power and contact to the
manufacturer, when thermal protector is activated.
4.3 Starting in Cold Weather
The bearing grease and cup packing may harden under cold conditions, and the pump may
be difficult to start. Use the following procedure in this case.
1) Open the inlet to atmosphere, and switch power ON-OFF two or three times until the pump
starts.
2) With the inlet open to atmosphere, run the pump for a few minutes to warm it.
Commence normal operation once the pump has warmed.
5. Pump Performance
5.1 Ultimate Pressure
The term “Ultimate Pressure” as employed in the catalogue and in this manual is defined as
“the minimum pressure obtained by the pump without introduction of gas from the pump inlet
(i.e. the no-
load condition)”.
Note that the indicator values for pressure may differ between types of vacuum gauges.
!
Danger
!
Caution
!
Note
!
Warning
!
Caution