Gast R6350a-2 Regenair R6 Series Regenerative Blower User Manual (+ PDF)

– The safety alert symbol, along with the words DANGER and
WARNING, will precede all safety messages. Take them seriously and
follow the instructions to avoid serious injury or death.

Installation

WARNING: Electrical Shock Hazard

– Before installing this product, disconnect electrical power at
the circuit breaker or fuse box.

– Install the product in a location where it will not come into
contact with water or other liquids.

– Ensure the product is weather protected.

– Electrically ground the product.

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

– Ensure proper installation conditions and clearances to allow
for unobstructed air flow. Blocking air flow can cause the product
to overheat.

– Install the blower with the properly sized inlet filter,
gauge, and relief valve to protect it from dirt and
over-heating.

Mounting

– For single impeller blowers, mount the product with the shaft
in a horizontal position, unless otherwise stated in the product
features.

– Dual impeller models must be mounted with the shaft in a
horizontal position.

– Mount the product to a stable, rigid operating surface and use
shock mounts to reduce noise and vibration.

Rotation

– Check that the blower is rotating clockwise from the motor
side. The motor side is usually marked with an arrow.

– Proper rotation can also be checked by observing the air flow
at the IN and OUT ports.

– Incorrectly connecting any two power lines on 3-phase motor
blowers can reverse the direction of rotation.

Plumbing

– Remove any foreign material from plumbing before connecting it
to the blower.

– Check motor mounting and rotation before connecting to
plumbing.

– The inlet and outlet ports are not designed to support
plumbing.

– Remove plugs from the IN and OUT ports and use pipe thread
lubricant when connecting plumbing to protect the threads.

– Connect plumbing using pipe and fittings that are the same
size or larger than the threaded ports of the blower.

– When installing two blowers in parallel, use plumbing that is
two whole pipe sizes larger in diameter than that of the
blower.

– Ensure correct connection of intake and exhaust plumbing to
the appropriate inlet and outlet ports.

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PART NO. 70 – 6000 F2-200 (REV-L)
STANDARD REGENAIR BLOWER
OPERATION & MAINTENANCE MANUAL

Model R1 Shown

Model R6P350A Shown

Model R7P Shown

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.

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.

General information
This manual does not apply to:
· SDR Series blowers without motors · Blowers powered with Explosion Proof Motors
Product Use Criteria:
· Pump only clean, dry air. · Operate at -20ºF – 104ºF (-29ºC – 40ºC). · Protect unit from dirt & moisture. · Do not pump flammable or explosive gases or
use in an atmosphere that contains such gases. · Protect all surrounding items from exhaust air. This
exhaust air can become very hot. · Corrosive gases and particulate material will
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.

ISO 9001 & 14001 CERTIFIED www.gastmfg.com

®Registered Trademark/TMTrademark of Gast Manufacturing Inc., Copyright © 2002 Gast Manufacturing Inc. All Rights Reserved.
1

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:
DANGER
You will be killed or seriously injured if you dont follow instructions.
WARNING
You can be killed or seriously injured if you dont 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
WARNING
Electrical Shock Hazard Disconnect electrical power at the circuit breaker or fuse box before installing this product. Install this product where it will not come into contact with water or other liquids. Install this product where it will be weather protected. Electrically ground this product. Failure to follow these instructions can result in death, fire or electrical shock.
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.
2

Mounting The single impeller blower should be oriented with the shaft in a horizontal position, unless the models 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.
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 products 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″ H2O) or higher, metal pipe is required for hot exhaust air.
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.
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.

Select fuses, motor protective switches or thermal protective switches to provide protection. Fuses act as short circuit protection for the motor, not as protection against overload. Incoming line fuses must be able to withstand the motors starting current. Motor starters with thermal magnetic overload or circuit breakers protect motor from overload or reduced voltage conditions. Motors without automatic restart require thermal protection or magnetic over-current cutout to prevent motor overloading from one phase in a 3-phase circuit, high starting frequency or jammed blower.
The power required will rise as differential pressure increases. The wiring diagram attached to the product or on page 6 of this manual provides required electrical information. Large motors have two diagrams, one for 50Hz wiring specifications and the other for 60Hz wiring specifications. Check that the power source is correct to properly operate the dual-voltage motor. If additional information is required, please consult your Gast Distributor/Representative.
Electrical Connection
WARNING
Electrical Shock Hazard
This product must be properly grounded. Do not modify the plug provided. If it will not fit the outlet, have the proper outlet installed by a qualified electrician. If repair or replacement of the cord or plug is necessary, do not connect the grounding wire to either flat blade terminal. The wire with insulation that is green or green with yellow stripes is the grounding wire. Check the condition of the power supply wiring. Do not permanently connect this product to wiring that is not in good condition or is inadequate for the requirements of this product.
Failure to follow these instructions can result in death, fire or electrical shock.
DIAGRAM A

Grounded Plug Grounding Pin

120-volt grounded connectors shown. 220/ 240-volt grounded connectors will differ in shape.

Grounded Outlet

Model with a power supply cord: This product must be grounded. For either 120-volt or 220/240-volt circuits connect power supply cord grounding plug to a matching grounded outlet. Do not use an adapter. (See DIAGRAM A)
In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the electric current. This product may be equipped with a power supply cord having a grounding wire with an appropriate grounding plug. The plug must be plugged into an outlet that is properly installed and grounded in accordance with all local codes and ordinances.
Check with a qualified electrician or serviceman if the grounding instructions are not completely understood, or if you are not sure whether the product is properly grounded. Do not modify the plug provided. If it will not fit the outlet, have the proper outlet installed by a qualified electrician.
Model that is permanently wired: This product must be connected to a grounded, metallic, permanent wiring system, or an equipment grounding terminal or lead on the product.
Power supply wiring must conform to all required safety codes and be installed by a qualified person. Check that supply voltage agrees with that listed on product nameplate.
Extension cords: Use only a 3-wire extension cord that has a 3-blade grounding plug. Connect extension cord plug to a matching 3-slot receptacle. Do not use an adapter. Make sure your extension cord is in good condition. Check that the gage wire of the extension cord is the correct size wire to carry the current this product will draw.
An undersized cord is a potential fire hazard, and will cause a drop in line voltage resulting in loss of power causing the product to overheat. The following table indicates the correct size cord for length required and the ampere rating listed on the product nameplate. If in doubt, use the next heavier gage cord. The smaller the gage number, the heavier the wire gage.

Minimum gage for extension cords
Amps Volts Length of cord in feet
120v 25 50 100 150 200 250 300 400 500 240v 50 100 200 300 400 500 600 800 1000

0-2 2-3 3-4 4-5 5-6 6-8 8-10 10-12 12-14 14-16 16-18 18-20

18 18 18 16 16 14 14 12 12 18 18 16 14 14 12 12 10 10 18 18 16 14 12 12 10 10 8 18 18 14 12 12 10 10 8 8 18 16 14 12 10 10 8 8 8 18 16 12 10 10 8 6 6 6 18 14 12 10 8 8 6 6 4 16 14 10 8 8 6 6 4 4 16 12 10 8 6 6 6 4 2 16 12 10 8 6 6 4 4 2 14 12 8 8 6 4 4 2 2 14 12 8 6 6 4 4 2 2

OPERATION

WARNING
Injury Hazard Install proper safety guards as needed to prevent any 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 material 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.

It is your responsibility to operate this product at recommended pressures or vacuum duties and room ambient temperatures. Do not operate R4P or larger size blowers without air flowing through the blower. 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. 3. Motor current Check that supply current matches recommended current rating on product nameplate. 4. Electrical overload cutout Check that current matches rating on product nameplate.
If motor fails to start or slows down significantly under load, shut off and disconnect from power supply. Check that the voltage is correct for motor and that motor is turning in the proper direction.

FOR BLOWERS WITH GREASE FITTINGS

Hours of Service Per Year
5,000 Continual Normal Service Seasonal Service (motor idle for 6 months or more) Continuous-high ambients, dirty or moist applications

Relubrication Intervals
3 years 1 year 1 year at beginning of season 6 months

Check that all external accessories such as relief valves and gauges are not damaged before re-operating product. 4

MAINTENANCE
WARNING

Electrical Shock Hazard Disconnect electrical power supply cord 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. If the product is supplied with an electric power chord, protect it from twisting, cuts and abrasion. When not in use, store in a clean dry place
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.
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.
Check filter elements and noise absorbing foam used in mufflers and clean motor and blower after first 500 hours of operation. Replace filter elements and determine how frequently mufflers should be checked during future operation. This one procedure will help assure the products performance and service life.
When there is an increase in the differential pressure across the inlet filter it is beginning to clog with dirt. Replace the cartridge when the filter will not come clean.
Small motor bearings (less than 5.5 Hp) never need to be greased. Larger motor bearings (greater than 5.5 Hp) have alemite grease fittings. Use a grease gun and apply one or two strokes of Exxon POLYREX® grease to the fittings to lubricate larger motor bearings.

WARRANTY

Gast finished products, when properly installed and operated under normal conditions of use, are warranted by Gast to be free from defects in material and workmanship for a period of twelve (12) months from the date of purchase from Gast or an authorized Gast Representative or Distributor. In order to obtain performance under this warranty, the buyer must promptly (in no event later than thirty (30) days after discovery of the defect) give written notice of the defect to Gast Manufacturing Incorporated, PO Box 97, Benton Harbor Michigan USA 49023-0097 or an authorized Service Center (unless specifically agreed upon in writing signed by both parties or specified in writing as part of a Gast OEM Quotation). Buyer is responsible for freight charges both to and from Gast in all cases.
This warranty does not apply to electric motors, electrical controls, and gasoline engines not supplied by Gast. Gasts warranties also do not extend to any goods or parts which have been subjected to misuse, lack of maintenance, neglect, damage by accident or transit damage.
THIS EXPRESS WARRANTY EXCLUDES ALL OTHER WARRANTIES OR REPRESENTATIONS EXPRESSED OR IMPLIED BY ANY LITERATURE, DATA, OR PERSON. GASTS MAXIMUM LIABILITY UNDER THIS EXCLUSIVE REMEDY SHALL NEVER EXCEED THE COST OF THE SUBJECT PRODUCT AND GAST RESERVES THE RIGHT, AT ITS SOLE DISCRETION, TO REFUND THE PURCHASE PRICE IN LIEU OF REPAIR OR REPLACEMENT.
GAST WILL NOT BE RESPONSIBLE OR LIABLE FOR INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, however arising, including but not limited to those for use of any products, loss of time, inconvenience, lost profit, labor charges, or other incidental or consequential damages with respect to persons, business, or property, whether as a result of breach of warranty, negligence or otherwise. Notwithstanding any other provision of this warranty, BUYERS REMEDY AGAINST GAST FOR GOODS SUPPLIED OR FOR NON-DELIVERED GOODS OR FAILURE TO FURNISH GOODS, WHETHER OR NOT BASED ON NEGLIGENCE, STRICT LIABILITY OR BREACH OF EXPRESS OR IMPLIED WARRANTY IS LIMITED SOLELY, AT GASTS OPTION, TO REPLACEMENT OF OR CURE OF SUCH NONCONFORMING OR NON-DELIVERED GOODS OR RETURN OF THE PURCHASE PRICE FOR SUCH GOODS AND IN NO EVENT SHALL EXCEED THE PRICE OR CHARGE FOR SUCH GOODS. GAST EXPRESSLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE OR PURPOSE WITH RESPECT TO THE GOODS SOLD. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTIONS SET FORTH IN THIS WARRANTY, notwithstanding any knowledge of Gast regarding the use or uses intended to be made of goods, proposed changes or additions to goods, or any assistance or suggestions that may have been made by Gast personnel.
Unauthorized extensions of warranties by the customer shall remain the customers responsibility.
CUSTOMER IS RESPONSIBLE FOR DETERMINING THE SUITABILITY OF GAST PRODUCTS FOR CUSTOMERS USE OR RESALE, OR FOR INCORPORATING THEM INTO OBJECTS OR APPLICATIONS WHICH CUSTOMER DESIGNS, ASSEMBLES, CONSTRUCTS OR MANUFACTURES.
This warranty can be modified only by authorized Gast personnel by signing a specific, written description of any modifications.

ELECTRICAL WIRING DIAGRAMS

Models R1102, R2103, R2105, R3105-1, R3105-12, R4110-2

Low Voltage Single Phase

High Voltage Single Phase

Blue P1 Brown P2 Black 5 Orange 3 White 2 Yellow 4

Line

Tie together

& Insulate

Tie together Line

Line Insulate
Tie together & Insulate Line

Model R6150J-2

Low Voltage Single Phase

Line

Brown Wht/Yel

Thermostat Thermostat

Models R4P115, R5125-2, R6125-2

Low Voltage Single Phase

High Voltage Single Phase

Purple Brown Orange Blue White Red

L1 Tie together & Insulate
L2

Purple Brown White Orange Blue Red

L1 Insulate Tie together & Insulate
L2

Models R2303A, R3305A-1, R3305A-13, R4310A-2, R4P315A, R6350A-2, R6P350A, R6PP3110M, R6PS3110M, R7100A-3, R7P3180M, R7S3180M, R93150A
Note: Model R6P355A has two additional leads labeled “J” for an external thermal motor protection circuit.

Connections for 3-Phase, 9 Leads

T6 T5 T4 T9 T8 T7 T3 T2 T1

Line Low Voltage

Line High Voltage

Connections for 3-Phase, 12 Leads Models R6335A-2, R6P335A

T10 T11 T12

T4 T5 T6

T7 T8 T9

T1 T2 T3

Line Low Voltage

Line High Voltage

Model R9P3300M, R93150A, R93150A-35

T7 T8 T9

T6 T5 T4

T6 T4 T5

T9 T8 T7

T1 T2 T3

T3 T2 T1

Line Low Voltage

Line High Voltage

Models R5325A-2, R6325A-2 (BEFORE 1-1-06)

T14 T15 T16

T4 T5 T6

T7 T8 T9

T1 T2 T3

Line Low Voltage

Line High Voltage

Models R5325A-2, R6325A-2 (AFTER 1-1-06)

T10 T11 T12

T4 T5 T6

T7 T8 T9

T1 T2 T3

Line Low Voltage

Line High Voltage

To reverse rotation on any 3-Phase motor, interchange any two external motor line connections to any two line leads. 6

RECOMMENDED ACCESSORIES
The following diagrams are only suggested configurations for these accessories. These accessory configurations may vary depending upon a particular units application.

MOISTURE SEPARATOR (FOR VACUUM) This moisture separator removes liquids from the gas stream in a vacuum process. This helps protect the blower from corrosion and the build up of mineral deposits.

For Model Number

R3, R4, R5

R4, R4H, R4P, R5

R4H, R4M, R5, R6, R6P, R6PS,

R4M, R6, R6P, R6PP, R7, R7P, R7S, R9, R9S

Part Number

RMS160 RMS200 RMS300

RMS400

CFM capacity

160

200

300

400

Liquid capacity (gal.) 10

Diameter (A)

14.8″

19.7″

24″

Dimension (B)

37.5″

35″

44″

NPT outlet (C)

2″

2.5″

3″

Inlet diameter (D)

2″

2.5″

3″

Dimension (E)

7.5″

9.7″

Dimension (F)

26.6″

29″

Maximum vacuum allowed: 22″ Hg.

HORIZONTAL SWING TYPE CHECK VALVE This check valve prevents backwash of fluids from entering the blower and air back-streaming. The check valve can be mounted to discharge or inlet either vertically or horizontally. The check valve will open with 3″ of water pressure or vacuum.

Model Number
Part Number Dimension (A) Dimension (B) Dimension (C)

R1, R2
AH326B 3.57″ 2.32″ 1.00″ NPT

R3
AH326C 4.19″ 2.69″ 1.25″ NPT

R4, R5, SDR4, R6, R6P, SDR6P, R7, R7S

SDR4, R4P

SDR6, R6PS

AH326D

AH326F

AH326G

4.50″

5.25″

8.00″

2.94″

3.82″

5.07″

1.50″ NPT

2.00″ NPT

2.50″ NPT

X
Explosion-proof, high level float switch AJ213 (optional).
7

RECOMMENDED ACCESSORIES

PRESSURE VACUUM GAUGE

Pressure/Vacuum Gauges

AJ496 AE133 AE133A AJ497 AE134 AE134F

2.50″ Dia. 2.50″ Dia. 2.50″ Dia. 2.50″ Dia. 2.50″ Dia. 3.50″ Dia.

Pressure Pressure Pressure Vacuum Vacuum Vacuum

1/4″ NPT 1/4″ NPT 1/4″ NPT 1/4″ NPT 1/4″ NPT 1/4″ NPT

0-60 in. H2O and 0-150 mbar 0-160 in. H2O and 0-400 mbar 0-200 in. H2O 0-60 in. H2O and 0-150 mbar 0-160 in. H2O and 0-400 mbar 0-15 in. HG

PRESSURE VACUUM RELIEF VALVE

Pressure/Vacuum Relief Valves

AG258 AJ121D AG258F AJ121G

1.50″ NPT 2.50″ NPT

Adjustable 30-200 in. H2O; 200 cfm max Silencer for AG258 Relief Valve Adjustable 25-200 in. H2O; 560 cfm max Silencer for AG258F Relief Valve

INLINE FILTERS (FOR VACUUM) The impeller of a blower passes very closely to the housing. It is recommended to have an inlet or in-line filter to ensure a trouble-free service life.
MPT = Male Pipe Thread FPT = Female Pipe Thread

Model Number R1

SDR4, R4P, SDR5, SDR6, R6, R6PP, SDR6P, R7S, R9,

R4H, R5

R6P, R7M

R6PS, R7, R7S R9P, R9S

Part Number

AJ151A AJ151B AJ151C

AJ151D AJ151E

AJ151G

AJ151H

AJ151M

Dimension (A) 5.88″

7.38″

7.38

8.75

8.75″

14.00″

18.50″

Dimension (A1)

16.25″

20.75″

Dimension (B) 4.50″

6.81″

10.25″

10.50″

27.13″

28.13″

Dimension (C) 2.75″

4.62″

5.00″

5.50″

18.50″

19.50″

Dimension (D) 1.00″ FPT 1.00″ FPT 1.25″ FPT 1.50″ FPT 2.00″ FPT 2.50″ FPT

3″MPT

5″ MPT

Dimension (E) 1.00″ FPT 1.00″ FPT 1.25″ FPT 1.50″ FPT 2.00″ FPT 2.50″ FPT

3″MPT

5″ MPT

Replacement Element

AJ135D AJ135E AJ135E

AJ135E AJ135F

AJ135G

AJ135C

AJ135H

Micron

RECOMMENDED ACCESSORIES

INLET FILTERS (FOR PRESSURE) All filters are heavy duty for high-particulate service. Inlet filters for Regenair blowers are drip-proof when mounted as shown..
MPT = Male Pipe Thread FPT = Female Pipe Thread

Model Number
Part Number Dimension (A) Dimension (B) Dimension (C) Replacement Element Micron

R1, R2

R4, R4H, R4P SDR5, R6, SDR6, SDR6P, R7,

SDR4, R5

R5P, R6PP, R6PS R7P, R7S

AJ126B AJ126C AJ126D

AJ126F

AJ126G

6.00″

7.70″

10.62″

10.00″

4.62″

7.12″

4.81″

13.12″

1.00″ MPT 1.25″ MPT 1.50″ MPT

2.00″ FPT

2.50″ MPT

AJ134B AJ134C AJ134E

AG340

AJ135A

R9, R9P, R9S AJ126M 16.00″ 14.62″ 5″ MPT AJ135H
10

MUFFLERS Designed to reduce noise by up to 5 dbA and remove high-frequency sound associated with all blowers.

Model Number R1, R2

R4, SDR4, R4H, R6, R6P, R6PS R7, R7S R4P, R5 SDR6P, SDR6

R6PP, R9 R7P Exhaust Exhaust

Part Number

AJ121B AJ121C AJ121D AJ121F

AJ121G AJ121H AJ121M

Dimension (A) 7.46″

7.94″

12.75″

17.05″

17.44″

20.30″

33.60″

Dimension (B) 2.38″

2.62″

3.25″

3.63″

4.25″

4.75″

6.00″

Dimension (C) 1.00″ NPT 1.25″ NPT 1.50″ NPT 2.00″ NPT

2.50″ NPT 3″ NPT 4″NPT

PARTS & ORDERING INFORMATION

Please reference the exploded view on Page 11 for the following model and parts table.

REF# ITEM

COVER

LOCK NUT

IMPELLER

SQUARE KEY

SHIM SPACER

RETAINING RING

HOUSING

10A FOAM

10B FOAM

MUFFLER EXTENSION

QTY
1 1 1 1 1 1 2 1

R1102 R1102C R1102K AJ101A BC187 AJ102A AH212C AE686-5 AJ145 AJ103A AJ112A(4) AJ106A

R2103 R2303A

R2105

AJ101B

BC187

BC181

AJ102BQ AJ102B

AH212

AB136A

AE686-3 AJ109

AJ145

AJ149

AJ103BQ AJ103B

–

AJ112BQ(6) AJ112BQ(6)

AJ106BQ AJ106BQ

R2305B
AJ101B BC181 AJ102B AB136A AE686-3 AJ145 AJ103B AJ112BQ(6) AJ106BQ

R3105-1 R3305A-1 R3305B-1 AJ101C BC181 AJ102C AB136A AJ109 AJ149 AJ103C AJ112C(4) AJ112CQ AJ106CQ

As required.

Parts listed are for stock models. For specific OEM models, please consult the factory.

When corresponding or ordering parts, please give complete model and serial numbers.

PARTS & ORDERING INFORMATION

Please reference the exploded view on the next page for the following model and parts tables.

REF# ITEM

COVER

LOCK NUT

IMPELLER

SQUARE KEY

SHIM SPACER

RETAINING RING

HOUSING

MUFFLER BOX

SPRING

SCREEN

10A FOAM

10B FOAM

MUFFLER EXTENSION

QTY R3105-12 R3305A-13

R4110-2 R4310A-2 R4310B-1

AJ101C

AJ101D

BC181

AJ102CA AJ102D

AB136A

AB136D

AJ109

AJ149

AJ103C

AJ103DR

AJ113DR

AJ112C(4) AJ112DS(4)

AJ112CQ AJ112DR

AJ106CQ AJ106DQ

R4P115 R4P315A
AJ101L BC181 AJ102L AB136D AJ109 AJ109A AJ149 AJ103L AJ113DQ AJ123EQ AJ112ER(6) AJ106EQ

R5125-2 R5325A-2 R5325B-1
AJ101EQ AJ259 AJ102E AB136 AJ109 AJ103EQ AJ113DQ AJ123EQ AJ112ER(6) AJ106EQ

R6125-2 R6150J-2 R6325A-2 R6335A-2 R6335B R6350A-2 R6350B-2 AJ101FB AJ259 AJ102FR AB136 AJ109 AJ103FQ AJ113FQ AJ123FB AJ112FC(6) AJ106FR

R6P335A R6P350A R6P350B
AJ101K AJ259 AJ102K AB136 AJ109 AJ103K AJ104K AJ113FQ AJ112K(8)

R6135J-10
AJ101FB AJ259 AJ102FR AB136 AJ260A AJ103FQ AJ113FQ AJ123FB AJ112FC(6) AJ106FR

REF# ITEM

1 2 3 4 5 6 7 8 8A 9 10A 10B 11 12 ** 13

COVER LOCK NUT/BOLT IMPELLER SQUARE KEY SHIM SPACER RETAINING RING HOUSING MUFFLER BOX SCREEN SPRING FOAM FOAM MUFFLER EXTENSION O-RING GASKET

QTY R6P350A R6P350B

AJ101K

AJ259

AJ102K

AB136

AJ109

AJ169F

AJ103K

AJ104K

AJ113FQ AJ113FQ

AJ112K(8) AJ112K (8)

R6P355A
AJ101KA BB750 AJ102KA AB136 AJ169F AJ103KA AJ104K AJ113FQ AJ112K (8)

R6PP3110M* R6PS3110M* R7100A-3 R7100B-1

AJ101KA(2) BB750(2) AJ102KA(2) AB136(2) AJ169F AJ103KD(2) AJ175 AJ107F

AJ101KA(2) BB750(2) AJ102KA(2) AB136(2) AJ169F AJ103KD(2) AJ107F

AJ101G BB750 AJ102GZ AC628 AJ110 AJ103GA AJ104GA AJ998G AJ112GA(8)

AJ101G BB750 AJ102GA AC628 AJ110 AJ103GA AJ104GA AJ998G AJ112GA(8)

REF# ITEM

QTY R7P3180M* R7S3180M* R9P3300M* R9S3300M* R93150A

COVER

LOCK NUT/BOLT

IMPELLER

SQUARE KEY

SHIM SPACER

RETAINING RING

HOUSING

MUFFLER BOX

SCREEN

SPRING

10A FOAM

10B FOAM

MUFFLER EXTENSION 1

12 ** O-RING

AJ101G(2) BB750(2) AJ102GZ(2) AC628(2) AJ110 AJ103GA(2) AJ175G

AJ101G(2) BB750(2) AJ102GZ(2) AC628(2) AJ110 AJ103GA(2)

AJ101M(2) BB707(2) AJ102M(2) AE130A(2) BJ110 AJ103M(2) AJ175G

AJ101M(2) BB707(2) AJ102M(2) AE130A(2) BJ110 AJ103M(2)

AJ101M BB707 AJ102M AE130A BJ110A AJ103M AJ104MP AJ998M AJ112M(10)

R4P315A only.

* Dual models.

** Not shown.

As required.

Parts listed are for stock models. For specific OEM models, please consult the factory.

When corresponding or ordering parts, please give complete model and serial numbers.

EXPLODED PRODUCT VIEW 11

PART NO. 70 – 6000 F2-200 (REV-L)

TROUBLESHOOTING CHART

Problem Increased sound.

Reason
Noise absorbing foam is damaged. Impeller rubbing inside.

Excessive vibration. Ambient and exhaust temperature increases. Decreased inlet air pressure Unit is very hot.
Unusual sound.

Damaged impeller. Motor and/or impeller are dirty.
Motor and/or blower are dirty. Filters dirty.
Inlet air filter is clogged.
Wrong wiring. Low voltage. Inlet air filter is clogged. Motor and/or blower are dirty. Operating at too high a pressure or vacuum.
Impeller is damaged or dirty. Bearing going bad.

Motor overload

Low voltage.

Unit does not start.

Incorrect electrical connection or power source. Impeller is damaged.

Remedy
Replace foam. Send unit to a Gast Authorized Service Facility.
Replace impeller. Clean motor and impeller periodically.
Clean motor and blower periodically. Replace filters.
Clean inlet filter. Replace cartridge.
Check wiring. Supply proper voltage. Clean inlet filter. Replace cartridge. Clean motor and blower periodically. Install a relief valve and pressure or vacuum gauge.
Clean or replace impeller. Send unit to a Gast Authorized Service Facility.
Check power source. Check wire size and wire connections.
Check wiring diagram, circuit fusing and circuit capacity. Clean or replace impeller. Install proper filtration.

We have Gast Certified Service Centers throughout the world. For the most up-todate listing, contact one of our sales offices below:

Gast Manufacturing, Inc.
P.O. Box 97 2300 S. Highway M139 Benton Harbor, MI 49023-0097 Ph: 269/926-6171 FAX: 269/925-8288 www.gastmfg.com

Gast Hong Kong
Room 6,9/F New Commerce Centre 19 on Sum Street, Shatin N. T. Hong Kong Ph: (852) 2690 1066 Fax: (852) 2690 1012 www.gasthk.com

Gast Group Limited, United Kingdom
Unit 11, The I O Centre Nash Road Redditch, B98 7AS United Kingdom ph: +44 (0) 1527 504040 Fax: +44 (0) 1527 525262 www.gastmfg.com

ISO 9001 & 14001 CERTIFIED www.gastmfg.com
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