Fluid Level
The vacuum pump is filled at the factory with the
correct amount of QUINSYW fluid. The fluid level is
monitored
while in operation by observing the fluid
level indicator located on the side of the air/fluid
reservoir tank. Fluid level should completely fill the
sight gauge when the vacuum pump is in operation.
Should the fluid level drop, and air is seen in the sight
glass, add fluid. Do not ovetilll as the excess fluid will
carry over into the discharge piping system.
Vacuum Pumn Rotation
Vacuum pump rotation must be checked prior to
start-up. Proper rotation is clockwise, as viewed from
facing the driven shaft, on the QSVI 25,50, 75,100 and
200. The QSW 40 rotation is counter clockwise as
viewed from facing the driven shaft. The power input
end of the vacuum pump is marked with an arrow
noting the proper rotation. Failure to operate the
vacuum pump in correct rotation will result in extreme
damage to the vacuum pump and warranty coverage
will be voided,
Phase Monitor
The phase monitor contains a relay. The relay contacts
close when all voltages and the phase sequence are
correct. Low voltage and voltage unbalance must be
sensed for a continuous trip delay before the relay is
de-energized. The trip delay is a fixed 10 seconds. The
voltage unbalance trip point is a fixed
6°/0 and the low
voltage trip point is a fixed minus 100/o.If the relay is
de-energized, it will automatically re-energize upon
correction of the fault condition.
If the phase monitor relay will not energize at start-up,
make the following checks:
(1) Check all the electrical connections to the phase
monitor.
(2) Check, and change if required, the phase rotation of
the incoming power.
(3) Check the leg to leg voltage of the incoming power
for low voltage condition or voltage unbalance (this
may require power company assistance to correct).
When service is required on the motor, contactor or
overloads, it is critical that wire reconnection are
correct. Starting the vacuum pump with the reverse
rotation may cause damage and void warranty.
QSVI vacuum pumps maybe equipped with an optional
phase monitor device to protect against low voltage,
loss of phase to any power leg and unbalance of
incoming power between any two legs.
Page 39
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