Gast SDR6 User Manual

www.gastmfg.com

ISO 9001 & 14001 CERTIFIED

®Registered Trademark/™Trademark of Gast Manufacturing Inc., Copyright © 2002 Gast Manufacturing Inc. All Rights Reserved.

PART NO. 70 - 6201 (REV-A)

WARNING

PLEASE READ THIS MANUAL COMPLETELY BEFORE INSTALLING AND USING

THIS PRODUCT. SAVE THIS MANUAL FOR FUTURE REFERENCE AND

KEEP IN THE VICINITY OF THE PRODUCT.

SEPARATE DRIVE REGENAIR BLOWER

OPERATION & MAINTENANCE MANUAL

Thank you for purchasing this Gast product. It is manufactured to the highest standards

using quality materials. Please follow all recommended maintenance, operational

and safety instructions and you will receive years of trouble free service.

Product Use Criteria:

• Operate at -20ºF - 104ºF (-29ºC - 40ºC).

• Protect unit from dirt & moisture.

• Protect all surrounding items from exhaust air. This
exhaust air can become very hot.

• Corrosive gases and particulate material may
damage unit. Water vapor, oil-based contaminants
or other liquids must be filtered out.

• The blower must be installed with the properly sized inlet and inline filters, gauges and
relief valves to protect the product from dirt and over-heating.

• Consult your Gast Distributor/Representative
before using at high altitudes.

our safety and the safety of others

Y

is extremely important.

Check rotation before connecting to plumbing. Inlet and

utlet ports are not designed to support plumbing.

o

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:

DANGER

You will
follow instructions.

be killed or seriously injured if you don’t

WARNING

You can
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.

INSTALLATION

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.

be killed or seriously injured if you don’t

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 productʼs 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.

lumbing to remove the hot discharge air of large

P

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 pages 6, 7 and 8 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.

Electrical Connection

Mounting

The single impeller blower should be oriented with the
shaft in a horizontal position, unless the modelʼs product
features state otherwise. Mounting the product to a
stable, rigid operating surface and using shock mounts will
reduce noise and vibration. Make sure that appropriate
noise dampening media is used with respect to the
working media for the application.

Rotation

From the drive side of the blower, check that the blower is
rotating clockwise. (he drive 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.

Plumbing
Remove any foreign material (burrs, chips, welding
drops, slag, pipe cuttings, excess sealant, sand or
lime)

Check rotation before connecting to plumbing. Inlet

and outlet ports are not designed to support plumbing.

WARNING

If working media other than standard atmosphere
is to be pumped through unit, consult factory for
acceptable parameters. Severe personal injury may
occur if hazard is ignored.

CAUTION:

Never lubricate this oil-less blower. The sealed
bearings are grease packed. All of the wetted
components are made with corrosion resistant
material and with paper filtration. The unit should
last for years.

Internal wetted components are either stainless
steel or coated for corrosion resistance. The blower
is sealed with a shaft seal and impregnated castings
to prevent working fluid leakage during operation.

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OPERATION

Injury Hazard

Install proper safety guards as needed to prevent
a

ny close contact with blower suction area.

Keep fingers and objects away from openings and
rotating parts.

Product surfaces become very hot during operation,
allow product surfaces to cool before handling.

Air stream from product may contain solid or liquid
m

aterial that can result in eye or skin damage,

wear proper eye protection.

Wear hearing protection. Sound level from some
models may exceed 85 dBA.

Failure to follow these instructions can result in
burns, eye injury or other serious injury.

WARNING

Electrical Shock Hazard

Disconnect electrical power supply cord to drive
motor before performing maintenance on this
product.

Some motors are thermally protected and will
automatically re-start when protector resets.

If product is hard wired into system, disconnect
electrical power at the circuit breaker or fuse box
before performing maintenance on this product.

Failure to follow these instructions can result in
death, fire or electrical shock.

c

WARNING

Injury Hazard

Product surfaces become very hot during operation,
allow product surfaces to cool before handling.

Air stream from product may contain solid or liquid
material that can result in eye or skin damage,
wear proper eye protection.

Failure to follow these instructions can result in
burns, eye injury or other serious injury.

WARNING

It is your responsibility to operate this product at
recommended pressures or vacuum duties and
room ambient temperatures.. Do not throttle
discharge or suction pipe to reducer capacity.
Throttle will increase differential pressure causing
increasing power absorption and working
temperatures.

Start Up

Operate blower for an hour and then check:

1. Ambient temperature – Check room and

discharge air temperatures. Increased room
temperatures may require stronger ventilation
especially for larger blowers. Exhaust air
should not exceed 215ºF (102ºC) for all
blowers less than 3.5 Hp. Exhaust air should
not exceed 275ºF (135ºC) for all blowers
above 3.5 Hp.

2. Working pressure and vacuum values – Adjust

relief valve pressure or vacuum setting, if
needed.

WARNING

Power must be de-energized and disconnected
from the drive motor before servicing. Be sure all
rotating parts have stopped, electrical shock or
severe cuts can result if hazard is ignored.

It is your responsibility to regularly inspect and
make necessary repairs to this product in order to
maintain proper operation. Make sure that pressure
and vacuum is released from product before
starting maintenance.

The separate drive electric motor and blower need
periodic cleaning to remove accumulated dust and dirt.
If they are not cleaned, this can result in excessive
vibration, an increase in temperature or can reduce the
service life of the system.

MAINTENANCE

Check filter elements and clean motor and blower after
first 500 hours of operation. Replace filter elements.
This one procedure will help assure the productʼs
performance and service life.

An increase in the differential pressure across an inlet
filter indicates its getting clogged. Clean the inlet air
filter as often as needed, blowing down against the
current to clean it. A dirty filter cartridge causes a high
intake resistance resulting in an increase of differential
pressure, absorbed power and working temperature.
Failure to clean replace these filters will result in
excessive pressure drop, a reduction in system air flow
and the blower will run hotter.

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