Specifications

75
Operation
Operation
Preliminary precautions
Operating
temperature
Before starting-up
the pump
- At start-up, before switching on the motor, check that the oil bath
temperature is greater than 53°F (12°C).
- The ambient operating temperature for the pump must be between 53°F
(12°C) and 113°F (45°C).
- Under these conditions, the stabilized pump temperature (at the front of the oil
case) will be between 140°F and 158°F (60 and 70°C) (depending on
operating conditions).
Special case - Synthetic oils
Synthetic oils are much more viscous when cold than mineral oils.
Do not start up the pump at ambient temperatures below 59°F (15°C).
For the same reason and to facilitate lubrication of the pump, pour a few
drops of oil (l to 2 cm
3
) through the inlet orifice before starting.
In certain cases, when the pump is started up in cold ambient conditions, or
with slightly contaminated oil, the current after start-up may remain high until
the oil in the pump is heated up. These conditions are sufficient for the
internal thermal protection to be activated, making start-up impossible (see
pages 72 & 73).
Be sure to fill the pump with oil (see page 68).
• The performance and operating safety of this product can only
be guaranteed if it is operated according to normal conditions of
use.
• The vacuum pump is also a compressor: incorrect operation may be
dangerous. Study the user manual before starting up the pump.
• The pumps are designed to prevent any thermal risk for user safety.
However, specific operating conditions may generate temperatures which
may justify particular attention on the part of the user > 70°C).
• Product tightness is guaranteed for normal operating conditions when the
product leaves the factory. It is the user’s responsibility to maintain the level
of tightness particularly when pumping dangerous products (on C series
pumps).
Check that the exhaust orifice is not blocked.