Tuthill KINNEY KD Series, Operator'S Manual, Page: 15 / 40

Operator’s Manual
1808
022016 ENG
11
05
Installation
B efore connecting the manifolding to the pump,
pour 1 pint (0.5 L) of oil into the inlet connection to
ensure proper lubrication at initial start-up. When
all inlet connections are made, check that the
pressure of the system is near the pump blank-off
pressure. The demountable oints should be O-ring
sealed or threaded connections made with Tefl on
sealing tape or other sealing compound. Loctite
5 67 is av ailable from Tuthill V acuum & B lower as
a compound for thread siz es up to 1 in. (2.5 cm) in
diameter or Titeseal ( adiator pecialty ompany)
for larger thread siz es. Install a v acuum isolation
valve between the system and the pump with a
means for connecting a v acuum gauge on both
sides of the v alv e. The gauge connections should
face vertically down for self-draining and should be
free from the splash of the pumping action. An air
admittance v alv e on the pump side of the isolation
v alv e is recommended. With such an arrangement,
it is possible to check either the system or the pump
for leaks without disconnecting the v acuum piping.
This isolation valve will also allow the system to be
kept under v acuum while the pump is not running
or allow the pump to continue operating while the
system is open to atmospheric pressure.
VACUUM GAUGES
T
wo general types of vacuum gauges are used for
testing vacuum equipment total pressure reading
types, such as Thermistor or Thermocouple
gauges, and partial pressure reading McLeod
gauges. The McLeod gauge indicates the partial
pressure of a gas and does not indicate the
component of pressure due to condensable va pors
such as water va por. Partial va por pressure has
little effect on the McLeod gauge readings until it
becomes quite high. Therefore, a McLeod gauge
is most useful in confi rming pump performance
and for determining the absence or presence of
real leaks. Thermistor or thermocouple gauges
are preferable for leak checking, and when
used in con unction with a c eod gauge the
contamination leve l can be determined.
A high thermistor or thermocouple gauge reading
may indicate that the pump is contaminated, that
it leaks, or both. A high McLeod gauge reading
means that a real leak is present.
ELECTRICAL CONNECTIONS
WARNING
!
Disconnect pump from source of electrical
power prior to mak ing repairs or adj ustments
to any electric component of the unit.
heck the operating voltage of the motor
by comparing the lead connections with the
markings on the motor. Wire to the proper power
source through necessary switching and safety
equipment. onnect the solenoid valve so that it is
energize d when the motor is started. The va lve is
normally closed and will open when energi ed.
The motor must turn in the direction of the arrow
cast on the pump. If the motor turns in the wrong
direction, reverse any two of the three wires
leading from the motor to the power source.
Standard pumps are designed to run clockwise
when facing the pump pulley.