Ulvac DIS-252 - Test Operation

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Single-phase specifications : L-N to V1-W1 (200V connection)
Single-phase specifications : L-N to U1-W1 (100V connection)
Three-phase specifications : L1-L2-L3 to U1-V1-W1
⑧
The protective earth cord shall be suffice in length and put up to keep the cord
the last to take the strain if the cable slips in its anchorage.
3.2 Test operation
CAUTION
Danger of exhaust disruption
Remove blank flange from inlet and outlet.
Operation with blank flange being fitted can disrupt exhaust or cause blank flange to fly
by exhaust impetus, resulting in accident, failure, or injury from contact with flying
objects.
Remove blank
flange
Danger of human body parts contacting vacuum
At starting up of the vacuum pump and during operation, be careful not to enter
human body into the inlet.
You can cause injury to people and damage to equipment.
Prevent human
body from
contacting
Danger of foreign objects entering inlet
When checking turning direction, be careful not to enter foreign objects into an
inlet.
Foreign objects entering inlet can cause failure.
Prevent foreign
objects from
entering
Danger of overheating
Check that cooling fan is turning and cooling air is flowing.
If not, it can cause accident, failure or injury such as burns due to overheating.
Check fan
Test operation
①
Open inlet and outlet.
Remove blank flange (2 places)
from inlet and outlet of
vacuum pump
.
②
Check turning direction.
Open inlet, turn on electrical source
to start operating vacuum pump.
Vacuum pump turns clockwise
when viewed from motor side.
Check that comes out of air outlet.
If air does not come out from outlet, vacuum pump of three-phase motor may turn
Centering
r
ing
with
o
-
ring
Clamp
B
lank
f
lange
Turning direction
Turning direction plate