Idex GAST R1 Manual

STANDARD REGENAIR BLOWER
OPERATION & MAINTENANCE MANUAL
Thank you for purchasing this Gast product. t 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.
General information
This manual does not apply to:
• SDR Series blowers without motors
• Blowers powered with Explosion Proof Motors
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 - 6000 F2-200 (REV-L)
Model R1 Shown Model R6P350A Shown Model R7P Shown
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.
1
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.

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 donʼt follow
instructions.
You can be killed or seriously injured if you donʼt 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.
INSTALLATION
Accessories
nstall 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.
nstall a relief valve to avoid changes in pressure or
vacuum that can cause overloading of large blowers.
nstall 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. n
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
c
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.
WARNING
Electrical Shock Hazard
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. nlet and outlet ports are not designed to
support plumbing.
Remove plugs from the N 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.
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. f the blower will be
operated at 125mbar (50” H2O) 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 modelʼs 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 N 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.
2

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. ncoming line fuses must be able to
withstand the motorʼs 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. f additional
information is required, please consult your Gast
Distributor/Representative.
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 D AGRAM A)
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.
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.
n 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.
Electrical Connection
c
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.
WARNING
Electrical Shock Hazard
Grounded Plug
Grounding Pin
Grounded Outlet
120-volt grounded connectors
shown. 220/ 240-volt grounded
connectors will differ in shape.
DIAGRAM A
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 18 18 18 16 16 14 14 12 12
2-3 18 18 16 14 14 12 12 10 10
3-4 18 18 16 14 12 12 10 10 8
4-5 18 18 14 12 12 10 10 88
5-6 18 16 14 12 10 10 888
6-8 18 16 12 10 10 8666
8-10 18 14 12 10 88664
10-12 16 14 10 886644
12-14 16 12 10 866642
14-16 16 12 10 866442
16-18 14 12 8864422
18-20 14 12 8664422
3

Start Up
Operate blower for an hour and then check:
1. Ambient temperature – Check room and discharge
air temperatures. ncreased 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.
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.
OPERATION
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.
WARNING
f 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.
MAINTENANCE
c
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
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.
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
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 productʼs 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.
4
Check that all external accessories such as relief valves
and gauges are not damaged before re-operating
product.
Hours of Service Relubrication
Per Year Intervals
5,000 3 years
Continual Normal Service 1 year
Seasonal Service (motor 1 year at beginning of
idle for 6 months or more) season
Continuous-high ambients, 6 months
dirty or moist applications
FOR BLOWERS WITH GREASE FITTINGS

5
Model
R6150J-2
Low Voltage
Single Phase
T1 Line
T4 Line
Brown Thermostat
Wht/Yel Thermostat
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. n 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
ncorporated, 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. Gastʼs 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.
TH S EXPRESS WARRANTY EXCLUDES ALL OTHER WARRANT ES OR REPRESENTAT ONS EXPRESSED OR MPL ED
BY ANY L TERATURE, DATA, OR PERSON. GASTʼS MAX MUM L AB L TY UNDER TH S EXCLUS VE REMEDY SHALL
NEVER EXCEED THE COST OF THE SUBJECT PRODUCT AND GAST RESERVES THE R GHT, AT TS SOLE D SCRET ON,
TO REFUND THE PURCHASE PR CE N L EU OF REPA R OR REPLACEMENT.
GAST W LL NOT BE RESPONS BLE OR L ABLE FOR ND RECT OR CONSEQUENT AL DAMAGES OF ANY K ND, 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, BUYERʼS REMEDY AGA NST GAST FOR
GOODS SUPPL ED OR FOR NON-DEL VERED GOODS OR FA LURE TO FURN SH GOODS, WHETHER OR NOT BASED
ON NEGL GENCE, STR CT L AB L TY OR BREACH OF EXPRESS OR MPL ED WARRANTY S L M TED SOLELY, AT
GASTʼS OPT ON, TO REPLACEMENT OF OR CURE OF SUCH NONCONFORM NG OR NON-DEL VERED GOODS OR
RETURN OF THE PURCHASE PR CE FOR SUCH GOODS AND N NO EVENT SHALL EXCEED THE PR CE OR CHARGE
FOR SUCH GOODS. GAST EXPRESSLY D SCLA MS ANY WARRANTY OF MERCHANTAB L TY OR F TNESS FOR A
PART CULAR USE OR PURPOSE W TH RESPECT TO THE GOODS SOLD. THERE ARE NO WARRANT ES WH CH
EXTEND BEYOND THE DESCR PT ONS SET FORTH N TH S 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 customerʼs responsibility.
CUSTOMER S RESPONS BLE FOR DETERM N NG THE SU TAB L TY OF GAST PRODUCTS FOR CUSTOMERʼS USE OR
RESALE, OR FOR NCORPORAT NG THEM NTO OBJECTS OR APPL CAT ONS WH CH CUSTOMER DES GNS,
ASSEMBLES, CONSTRUCTS OR MANUFACTURES.
This warranty can be modified only by authorized Gast personnel by signing a specific, written description of any modifications.
WARRANTY
Models
R4P115, R5125-2, R6125-2
Low Voltage High Voltage
Single Phase Single Phase
Purple L1 Purple L1
Brown Brown nsulate
Orange White
Blue Orange
White L2 Blue
Red Red L2
ELECTRICAL WIRING DIAGRAMS
Models
R1102, R2103, R2105, R3105-1, R3105-12, R4110-2
Low Voltage High Voltage
Single Phase Single Phase
Blue P1 Line P1 Line
Brown P2 P2 nsulate
Black 5 Tie together 5
Orange 3 & nsulate 3 Tie together
White 22& nsulate
Yellow 4 Tie together Line 4 Line
Tie together
& nsulate Tie together
& nsulate

Note: Model R6P355A has two additional leads labeled “J” for an external thermal motor protection circuit.
T7 T8 T9
T6 T4 T5
T1 T2 T3
T6 T5 T4
T9 T8 T7
T3 T2 T1
T6 T5 T4
T9 T8 T7
T3 T2 T1
T6 T5 T4
T9 T8 T7
T3 T2 T1
Line Line Line Line
Low Voltage High Voltage Low Voltage High Voltage
T10 T11 T12
T4 T5 T6
T7 T8 T9
T1 T2 T3
T10 T11 T12
T4 T5 T6
T7 T8 T9
T1 T2 T3
T14 T15 T16
T4 T5 T6
T7 T8 T9
T1 T2 T3
Line Line Line Line
Low Voltage High Voltage Low Voltage High Voltage
T14 T15 T16
T4 T5 T6
T7 T8 T9
T1 T2 T3
To reverse rotation on any 3-Phase motor, interchange any two external motor line connections to any two line leads.
Models
R2303A, R3305A-1, R3305A-13, R4310A-2, R4P315A, R6350A-2, R6P350A, R6PP3110M, R6PS3110M,
R7100A-3, R7P3180M, R7S3180M, R93150A
Connections for 3-Phase, 12 Leads
Models R6335A-2, R6P335A Models R5325A-2, R6325A-2 (BEFORE 1-1-06)
Connections for 3-Phase, 9 Leads
Model R9P3300M, R93150A, R93150A-35
6
T10 T11 T12
T4 T5 T6
T7 T8 T9
T1 T2 T3
Line Line
Low Voltage High Voltage
T10 T11 T12
T4 T5 T6
T7 T8 T9
T1 T2 T3
Models R5325A-2, R6325A-2 (AFTER 1-1-06)

RECOMMENDED ACCESSORIES
The following diagrams are only suggested configurations for these accessories. These accessory configurations may
vary depending upon a particular unitʼs application.
For Model Number R3, R4, R5 R4, R4H, R4H, R4M, R4M, R6,
R4P, R5 R5, R6, R6P, R6PP,
R6P, R6PS, R7, R7P,
R7S, R9,
R9S
Part Number RMS160 RMS200 RMS300 RMS400
CFM capacity 160 200 300 400
Liquid capacity (gal.) 10 19 19 40
Diameter (A) 14.8” 19.7” 19.7” 24”
Dimension (B) 37.5” 35” 35” 44”
NPT outlet (C) 2” 2” 2.5” 3”
nlet diameter (D) 2” 2” 2.5” 3”
Dimension (E) 7.5” 7.5” 7.5” 9.7”
Dimension (F) 26.6” 26.6” 26.6” 29”
Model Number R1, R2 R3 R4, R5, SDR4, R6, R6P, SDR6P, R7, R7S
SDR4, R4P SDR6, R6PS
Part Number AH326B AH326C AH326D AH326F AH326G
Dimension (A) 3.57” 4.19” 4.50” 5.25” 8.00”
Dimension (B) 2.32” 2.69” 2.94” 3.82” 5.07”
Dimension (C) 1.00” NPT 1.25” NPT 1.50” NPT 2.00” NPT 2.50” NPT
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.
HORIZONTAL SWING TYPE CHEC 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.
Maximum vacuum allowed: 22” Hg.
X
Explosion-proof, high level
float switch AJ213 (optional).
7

RECOMMENDED ACCESSORIES
Pressure/Vacuum Gauges
AJ496 2.50” Dia. Pressure 1/4” NPT 0-60 in. H2O and 0-150 mbar
AE133 2.50” Dia. Pressure 1/4” NPT 0-160 in. H2O and 0-400 mbar
AE133A 2.50” Dia. Pressure 1/4” NPT 0-200 in. H2O
AJ497 2.50” Dia. Vacuum 1/4” NPT 0-60 in. H2O and 0-150 mbar
AE134 2.50” Dia. Vacuum 1/4” NPT 0-160 in. H2O and 0-400 mbar
AE134F 3.50” Dia. Vacuum 1/4” NPT 0-15 in. HG
Pressure/Vacuum Relief Valves
AG258 1.50” NPT Adjustable 30-200 in. H2O; 200 cfm max
AJ121D Silencer for AG258 Relief Valve
AG258F 2.50” NPT Adjustable 25-200 in. H2O; 560 cfm max
AJ121G Silencer for AG258F Relief Valve
PRESSURE – VACUUM GAUGE
PRESSURE – VACUUM RELIEF VALVE
8
Model Number R1 R2 R3 R4 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” 7.38 8.75 8.75” 14.00” 18.50”
Dimension (A1) ––– – – – 16.25” 20.75”
Dimension (B) 4.50” 6.81” 6.81” 6.81” 10.25” 10.50” 27.13” 28.13”
Dimension (C) 2.75” 4.62” 4.62” 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 AJ135D AJ135E AJ135E AJ135E AJ135F AJ135G AJ135C AJ135H
Element
Micron 10 10 10 10 10 10 10 10
INLINE FILTERS (FOR VACUUM)
The impeller of a blower passes very closely to the housing. t 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

RECOMMENDED ACCESSORIES
Model Number R1, R2 R3 R4, SDR4, R4H, R6, R6P, R6PS R7, R7S R6PP, R9 R7P
R4P, R5 SDR6P, SDR6 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
Model Number R1, R2 R3 R4, R4H, R4P SDR5, R6, SDR6, SDR6P, R7, R9, R9P,
SDR4, R5 R5P, R6PP, R6PS R7P, R7S R9S
Part Number AJ126B AJ126C AJ126D AJ126F AJ126G AJ126M
Dimension (A) 6.00” 6.00” 7.70” 10.62” 10.00” 16.00”
Dimension (B) 4.62” 7.12” 7.12” 4.81” 13.12” 14.62”
Dimension (C) 1.00” MPT 1.25” MPT 1.50” MPT 2.00” FPT 2.50” MPT 5” MPT
Replacement AJ134B AJ134C AJ134E AG340 AJ135A AJ135H
Element
Micron 10 10 10 10 10 10
INLET FILTERS (FOR PRESSURE)
All filters are heavy duty for high-particulate service. nlet filters for
Regenair blowers are drip-proof when mounted as shown..
MPT = Male Pipe Thread
FPT = Female Pipe Thread
MUFFLERS
Designed to reduce noise by up to 5 dbA and remove
high-frequency sound associated with all blowers.
9
PARTS & ORDERING INFORMATION
REF# ITEM QTY R1102 R2103 R2105 R2305B R3105-1
R1102C R2303A R3305A-1
R1102 R3305B-1
1 COVER 1 AJ101A AJ101B AJ101B AJ101B AJ101C
2 LOC NUT 1 BC187 BC187 BC181 BC181 BC181
3 IMPELLER 1 AJ102A AJ102BQ AJ102B AJ102B AJ102C
4 SQUARE EY 1 AH212C AH212 AB136A AB136A AB136A
5 SHIM SPACER ∆ AE686-5 AE686-3 AJ109 AE686-3 AJ109
6 RETAINING RING 1 AJ145 AJ145 AJ149 AJ145 AJ149
7 HOUSING 1 AJ103A AJ103BQ AJ103B AJ103B AJ103C
8– –– - – – –
9– –– - – – –
10A FOAM ∆ AJ112A(4) AJ112BQ(6) AJ112BQ(6) AJ112BQ(6) AJ112C(4)
10B FOAM 2– – – – AJ112CQ
11 MUFFLER EXTENSION 1 AJ106A AJ106BQ AJ106BQ AJ106BQ AJ106CQ
Please reference the exploded view on Page 11 for the following model and parts table.
∆ 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
REF# ITEM QTY R3105-12 R4110-2 R4P115 R5125-2 R6125-2 R6P335A R6135J-10
R3305A-13 R4310A-2 R4P315A† R5325A-2 R6150J-2 R6P350A
R4310B-1 R5325B-1 R6325A-2 R6P350B
R6335A-2
R6335B
R6350A-2
R6350B-2
1 COVER 1 AJ101C AJ101D AJ101L AJ101EQ AJ101FB AJ101 AJ101FB
2 LOC NUT 1 BC181 BC181 BC181 AJ259 AJ259 AJ259 AJ259
3IMPELLER 1 AJ102CA AJ102D AJ102L AJ102E AJ102FR AJ102 AJ102FR
4SQUARE EY 1 AB136A AB136D AB136D AB136 AB136 AB136 AB136
5 SHIM SPACER ∆ AJ109 AJ109 AJ109 AJ109 AJ109 AJ109 AJ260A
5† SHIM SPACER† 1 – – AJ109A† – – – –
6RETAINING RING 1 AJ149 AJ149 AJ149 ––––
7 HOUSING 1 AJ103C AJ103DR AJ103L AJ103EQ AJ103FQ AJ103 AJ103FQ
8 MUFFLER BOX 1– – – – – AJ104 –
9SPRING 2– AJ113DR AJ113DQ AJ113DQ AJ113FQ AJ113FQ AJ113FQ
9A SCREEN 2– – AJ123EQ AJ123EQ AJ123FB – AJ123FB
10A FOAM ∆ AJ112C(4) AJ112DS(4) AJ112ER(6) AJ112ER(6) AJ112FC(6) AJ112 (8) AJ112FC(6)
10B FOAM 2 AJ112CQ AJ112DR –––––
11 MUFFLER EXTENSION 1 AJ106CQ AJ106DQ AJ106EQ AJ106EQ AJ106FR – AJ106FR
REF# ITEM QTY R6P350A R6P350B R6P355A R6PP3110M* R6PS3110M* R7100A-3 R7100B-1
1COVER 1 AJ101 AJ101 AJ101 A AJ101 A(2) AJ101 A(2) AJ101G AJ101G
2LOC NUT/BOLT 1 AJ259 AJ259 BB750 BB750(2) BB750(2) BB750 BB750
3 IMPELLER 1 AJ102 AJ102 AJ102 A AJ102 A(2) AJ102 A(2) AJ102GZ AJ102GA
4 SQUARE EY 1 AB136 AB136 AB136 AB136(2) AB136(2) AC628 AC628
5 SHIM SPACER ∆ AJ109 AJ169F AJ169F AJ169F AJ169F AJ110 AJ110
6 RETAINING RING 1– – – – – – –
7 HOUSING 1 AJ103 AJ103 AJ103 A AJ103 D(2) AJ103 D(2) AJ103GA AJ103GA
8 MUFFLER BOX 1 AJ104 AJ104 AJ104 ––AJ104GA AJ104GA
8A SCREEN 2– – – – – AJ998G AJ998G
9 SPRING 2 AJ113FQ AJ113FQ AJ113FQ ––––
10A FOAM ∆ AJ112 (8) AJ112 (8) AJ112 (8) ––AJ112GA(8) AJ112GA(8)
10B FOAM 2– – – – – – –
11 MUFFLER EXTENSION 1– – – – – – –
12 ** O-RING 2– – – AJ175 ––
13 GAS ET 4– – – AJ107F AJ107F ––
Please reference the exploded view on the next page for the following model and parts tables.
†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.
10
REF# ITEM QTY R7P3180M* R7S3180M* R9P3300M* R9S3300M* R93150A
1 COVER 1 AJ101G(2) AJ101G(2) AJ101M(2) AJ101M(2) AJ101M
2 LOC NUT/BOLT 1 BB750(2) BB750(2) BB707(2) BB707(2) BB707
3 IMPELLER 1 AJ102GZ(2) AJ102GZ(2) AJ102M(2) AJ102M(2) AJ102M
4 SQUARE EY 1 AC628(2) AC628(2) AE130A(2) AE130A(2) AE130A
5 SHIM SPACER ∆ AJ110 AJ110 BJ110 BJ110 BJ110A
6 RETAINING RING 1– – – – –
7 HOUSING 1 AJ103GA(2) AJ103GA(2) AJ103M(2) AJ103M(2) AJ103M
8 MUFFLER BOX 1– – – – AJ104MP
8A SCREEN 2– – – – AJ998M
9 SPRING 2– – – – –
10A FOAM ∆– – – – AJ112M(10)
10B FOAM 2– – – – –
11 MUFFLER EXTENSION 1– – – – –
12 ** O-RING 2 AJ175G – AJ175G ––

EXPLODED PRODUCT VIEW
11

TROUBLESHOOTING CHART
www.gastmfg.com
ISO 9001 & 14001 CERTIFIED
Problem Reason Remedy
ncreased sound. Noise absorbing foam is damaged. Replace foam.
mpeller rubbing inside. Send unit to a Gast Authorized
Service Facility.
Excessive vibration. Damaged impeller. Replace impeller.
Motor and/or impeller are dirty. Clean motor and impeller periodically.
Ambient and exhaust temperature Motor and/or blower are dirty. Clean motor and blower periodically.
increases. Filters dirty. Replace filters.
Decreased inlet air pressure nlet air filter is clogged. Clean inlet filter. Replace cartridge.
Unit is very hot. Wrong wiring. Check wiring.
Low voltage. Supply proper voltage.
nlet air filter is clogged. Clean inlet filter. Replace cartridge.
Motor and/or blower are dirty. Clean motor and blower periodically.
Operating at too high a pressure or nstall a relief valve and pressure or
vacuum. vacuum gauge.
Unusual sound. mpeller is damaged or dirty. Clean or replace impeller.
Bearing going bad. Send unit to a Gast Authorized
Service Facility.
Motor overload Low voltage. Check power source.
Check wire size and wire connections.
Unit does not start. ncorrect electrical connection or Check wiring diagram, circuit fusing
power source. and circuit capacity.
mpeller is damaged. Clean or replace impeller. nstall
proper filtration.
PART NO. 70 - 6000 F2-200 (REV-L)
12
We have Gast Certified Service Centers throughout the world. For the most up-to-
date listing, contact one of our sales offices elow:
Gast Manufacturing, Inc.
P.O. Box 97
2300 S. Highway M139
Benton Harbor, M 49023-0097
Ph: 269/926-6171
FAX: [phone]
www.gastmfg.com
Gast Group Limited, United
ingdom
Unit 11, The O Centre
Nash Road
Redditch, B98 7AS
United Kingdom
ph: [phone]
Fax: [phone]
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: [phone]
www.gasthk.com