Your safety and the safety of others
is extremely important.
We have provided many important safety messages
in this manual and on your product. Always read
and obey all safety messages.
This is the safety alert symbol. This symbol
alerts you to hazards that can kill or hurt you and
others. The safety alert symbol and the words
“DANGER” and “WARNING” will precede all safety
messages. These words mean:
You will be killed or seriously injured if you don’t
follow instructions.
You can be killed or seriously injured if you don’t
follow instructions.
All safety messages will identify the hazard, tell you
how to reduce the chance of injury, and tell you
what can happen if the safety instructions are not
followed.
Correct installation is your responsibility.
Make sure
you have the proper installation conditions and that
installation clearances do not block air flow.
Blocking air flow over the product in any way can
cause the product to overheat.
The blower must be installed with the properly sized
inlet filter, gauge and relief valve to protect the
product from dirt and over-heating.
I N S TA L L AT I O N
Accessories
Install two vacuum gauges, one before and one after
filter, to monitor restriction through filters. As filters
become clogged, performance efficiency will be
reduced. Filters should be checked periodically and
replaced when necessary. See page 7 for installation.
Install a relief valve to avoid changes in pressure or
vacuum that can cause overloading of large blowers.
Install an intake filter with a relief valve to prevent
foreign material from entering blower if blower is used in
a vacuum application in a dirty environment. In
applications where there is high humidity or liquids
being used in the process, install a moisture separator.
See Recommended Accessories on pages 7-9 or
consult your Gast Distributor/Representative for
additional filter and accessories recommendations. Do
Not install check valves that close with a strong spring.
The recommended check valves (page 7) provide
minimal pressure drop, positive sealing and are
resistant to the high discharge temperatures of large
blowers.
WARNING
DANGER
Plumbing
Remove any foreign material (burrs, chips, welding
drops, slag, pipe cuttings, excess sealant, sand or
lime) from plumbing.
Check motor mounting and rotation before connecting
to plumbing. Inlet and outlet ports are not designed to
support plumbing.
Remove plugs from the IN and OUT ports. Use a small
amount of pipe thread lubricant when connecting
plumbing to protect the aluminum blower threads.
Connect with pipe and fittings that are the same size or
larger than the product’s threaded ports. When
installing two blowers in parallel, use plumbing that is
two whole pipe sizes larger in diameter than that of the
blower. Be sure to connect the intake and exhaust
plumbing to the correct inlet and outlet ports.
Plumbing to remove the hot discharge air of larger
blowers may be required to help maintain proper room
ambient temperature. Use a relief valve to discharge
excess air into the atmosphere. If the blower will be
operated at 125mbar (50” H
2
O) or higher, metal pipe is
required for hot exhaust air.
Mounting
The single impeller blower should be oriented with the
shaft in a horizontal position, unless the model’s product
features state otherwise. The dual impeller models must
be mounted with the shaft in a horizontal position.
Mounting the product to a stable, rigid operating surface
and using shock mounts will reduce noise and vibration.
Rotation
From the motor side of the blower, check that the blower is
rotating clockwise. (The motor side is marked with an
arrow on most models.) Proper rotation can also be
checked by the air flow at the IN and OUT ports. On
blowers powered by a 3-phase motor, incorrectly
connecting any two power lines can reverse direction.
Motor Installation
It is your responsibility to contact a qualified
electrician and assure that the electrical installation
is adequate and in conformance with all national
and local codes and ordinances.
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