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255571 (Rev. 1) 01/20
3.0 OPERATION
3.1 Start-up
Check rotation of the motor as described in paragraph 1.4 Power Requirements.
Fill the pump with oil as described in paragraph 1.5 - Oil Filling
Start the pump with the inlet closed. Run the pump for a few minutes and then shut
down. Check the oil level again and make sure the oil level is over 3/4 position of oil
sight glass as shown on the label.
Add oil though oil fill port, if necessary. Pump oil should only be added when the pump
is off
3.2 Stopping the Pump
To stop the pump, turn off the power. An anti-suck back valve (built-in) for these pumps
installed in inlet flange will prevent the air from back flowing into the vacuum chamber
after the pump is shutdown.
Caution: In applications, where the quantity of water vapor is moderate, it is
recommended to run the pump for 10 minutes at least with outside air prior to
shut down to prevent the vapor from condensing in the pump.
3.3 Operating Conditions
The C30 are designed to run the ultimate vacuum levels stated in technical data (6.0)
for continuous operation. Operation over maximum vacuum level may result in failure of
and severe damage to the machine.
Vacuum Regulator installed in inlet flange is set at maximum allowable vacuum at
factory, and a desired vacuum level to below the maximum level can be achieved
by rotating the adjustment knob.
The standard version is for use of dry air only, and may not be used in hazardous
areas. Handling of humid air or gases containing aggressive chemicals is possible
only with specially configured units. Consult Ohio Medical for assistance.
Excessive back pressure on the unit may result in excessive current draw.
Do not operate the vacuum pump over 2 psi back pressure.
Also it is recommended for operating personnel who are working near the pump to wear
ear protectors. If noise below the designed dBA is required, an external sound enclosure
can be added to the system, provided adequate ventilation is provided.
The ambient and suction air temperature must be between 40°F and 104°F.
Caution: Any non compliance may lead to severe injury to persons and damage to the
pump.
Caution: Maximum number of motor starts per hour should not exceed 10 per hour.
Excessive starting of the motor can cause overheating and premature failure of the
motor. A minimum run timer should be used with any panel that may control the pump
with automatic starts and stops based on system pressures.
