Manual 2007 Rev B p/n 2007
25
06
Operation
OPERATING
The upper temperature limit for blower operation
is 400°F (205°C), 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 blower is not intended to be used with
explosive products or in explosive
environments. The blower is not intended to
be used in applications that include hazardous
and toxic gases. Consult the factory for
support.
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 fl uids 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.
STOPPING
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 atmosphere. Turn off the cooling water if
the blower is water cooled. Stop the backing pump.
See the component instruction manual.
METHANE GAS APPLICATIONS
Some sewage gases will adhere to the rotors in a
gas blower. If enough sludge from the gas being
pumped builds up on the rotors, it destroys the
clearances between the rotors. The build-up can
cause the blower to clatter and eventually freeze
up when the rotors no longer have clearance to
turn. This can be easily prevented by periodically
fl ushing the blower with a mixture of 75% kerosene
or fuel oil and 25% lubricating oil. The kerosene
or fuel oil dissolves the sludge build-up, and the
lubricating oil coats the rotors to slow the build-up.
To Next Page
Loading...
