Manual 1808 Rev B p/n 001808 0000
12
WARNING
!
The belt guard must be properly secured
to the pump at all times while the pump is
running.
When operating the pump in an enclosed
area it is necessary, for health reasons, to
have the area well ventilated. If ventilation is
not adequate, the pump discharge should be
ltered or piped to open air.
Do not block or restrict the ow of gas from
the pump discharge. Back pressure within the
pump could cause severe damage.
GENERAL
Each pump has been thoroughly tested and is
ready for operation as soon as it is installed and
lled with oil. If the vacuum system is free of leaks,
including the connections to the pump, the ultimate
system pressure should be close to the pressure
obtained with the pump inlet closed off.
FILLING PUMP WITH OIL
When installing the pump, pour 1 pint (0.5 L) of
oil into the pump inlet before connecting the inlet
piping. Thereafter, pour the total required quantity
of oil into the oil separator.
PRE-START CHECKS
Performed the following pre-start checks if
maximum pumping conditions are required.
1. Check that the suction lines are tight and
absolutely free of all foreign matter.
2. Add oil as necessary to bring the oil level
midway on the sight gauge.
3. Check that the pump can be turned over by
hand without mechanical interference. With the
inlet at atmospheric pressure, turn the pump
and note that more turning force is required
when the pump discharges. This indicates that
the discharge valves are seating properly.
4. Check the V-belt tension as shown in Figure
5-1 on page 9.
5. Check that direction of rotation is correct.
STARTING
Perform the pre-start checks, and do not start the
pump until the oil temperature is above 40°F (4°C).
1. Depress the motor start button and allow the
pump 10 minutes to warm up, at blank-off,
before starting process work.
2. Check that the oil solenoid valve is energized
and open, allowing the oil level to drop in the
sight gauge.
OPERATION
06
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