25
06
Operation
Manual 2008 Rev A p/n 2008
OPERATING
The upper temperature limit for blower operation is
measured in the exhaust gas stream with a low-
mass thermocouple. When this temperature limit
switch is installed, as the temperature exceeds the
predetermined temperature, the blower motor will
stop and cannot be restarted until the temperature
drops below the trip setting of the temperature
switch.
DANGER
!
The booster is not intended to be used
with explosive products or in explosive
environments unless fully approved by Tuthill
Factory prior to the purchase of the product,
designed specifically for the gas application.
WARNING
!
Physical harm may occur if human body parts
are in contact or exposed to the process
vacuum. Assure that all connections are
protected from human contact.
WARNING
!
If rated vacuum or pressure levels are
exceeded, process fluids will migrate to other
parts of the blower and system.
CAUTION
!
Do not touch hot surfaces.
Do not touch the blower while
it is in operation and assure
blower is cool when not in
operation.
CAUTION
!
Use of a thermowell insulates the
thermocouple. Invalid and delayed readings
will result. This can result in ineffective
protection devices.
The upper temperature limits are not intended
for continuous operation. Consult with factory
for detailed information assistance.
CAUTION
!
Do not stop the blower if there are high
outlet pressures in the outlet piping. Unload
the outlet piping prior to shutting down the
blower.
Stop the blower by turning off the motor. Isolate
the blower from the vacuum system and vent the
blower to the atmosphere. Turn off the cooling
water, if the blower is water cooled. Stop the
backing pump. See the component instruction
manual.
WATER-INJECTED BLOWERS
Water injected into the inlet of a blower operating
on vacuum service will cool the blower. The water
absorbs the heat of compression as it passes
through the blower along with the air/gas being
compressed. A blower cooled in this manner can
operate safely at higher vacuums or higher inlet
temperatures than an uncooled blower.
The amount of water required depends on the
inlet air/gas temperature, inlet vacuum, water
temperature, and maximum discharge temperature
desired. Check with the factory or sales
representative for more guidance.
Содержание PD Plus 9000 Series
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