Idex Gast 8R Series Manual

8R SERIES MINIA URE PUMP
OPERA ION & MAIN ENANCE MANUAL
Product Use Criteria:
• Pump only clean, dry air.
• Operate at 32ºF - 104ºF (0ºC - 40ºC).
• Protect unit from dirt & moisture.
• Do not pump flammable or explosive gases or
use in an atmosphere that contains such gases.
• Corrosive gases and particulate material will
damage unit. Water vapor, oil-based contaminants
or other liquids must be filtered out.
• Consult your Gast Distributor/Representative
before using at high altitudes.
• This pump is oil-less and requires NO lubrication.
• Units may be used for both pressure and vacuum.
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.
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 - 2550 G448PL (Rev B)
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.


Motor Control
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.
All electric motors generate heat. To avoid serious burns,
never touch unit during or immediately after operation.
Always disconnect power source before servicing. Do not
block the flow of cooling air over the motor in any way.
Keep the air flow vents free of foreign objects, dirt, lint,
etc.
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.
his is the safety alert symbol. his symbol
alerts you to hazards that can kill or hurt you and
others. he safety alert symbol and the words
“DANGER” and “WARNING” will precede all safety
messages. hese 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. ake 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.
Mounting
This product can be installed in any orientation.
ounting the product to a stable, rigid operating surface
and using shock mounts will reduce noise and vibration.
INS ALLA ION
Accessories
Install gauges in the lines to monitor performance. A
relief valve can be installed at the inlet or outlet or both.
Consult a Gast representative for performance
limitations.
If operating in a dirt contaminated atmosphere, a
suitable filter should be used to ensure long service.
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
To prevent air flow restriction, use pipes and fittings of
the same size or larger than the barbed or threaded
ports. Note that the ports are not designed to support
plumbing.
2
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.
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.
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.
c
This product must be properly grounded.
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
Electrical Connection

It is your responsibility to operate this product at
recommended pressures or vacuum duties and room
ambient temperatures. Do not start against a vacuum
or pressure load.
Start Up
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.
OPERA ION
WARNING
Injury Hazard
Use only recommended air handling parts acceptable 
for pressure not less than 70 psi.
Keep fingers and objects away from openings and
rotating parts.
Product surfaces become hot during operation,
allow product surfaces to cool before handling.
Do NOT direct air stream at body. Air stream from
product may contain solid or liquid material that can
result in eye or skin damage, wear proper eye
protection.
Do NOT spray flammable or combustible liquid.
Failure to follow these instructions can result in
burns, eye injury or other serious injury.


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
MAIN ENANCE
c
Disconnect electrical power supply cord before
performing maintenance on this product.
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.
Electrical Shock Hazard
WARNING
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 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. he smaller the gage
number, the heavier the wire gage.
3
SHU DOWN PROCEDURES
It is your responsibility to follow proper shutdown
procedures to prevent product damage.
NEVER ADD OIL O HIS OIL-LESS PUMP.
Proper shutdown procedures must be followed to
prevent pump damage. Failure to do so may result in
premature pump failure. Follow all the steps to assure
correct storage and shutdown between operating
periods.
It is your responsibility to:
• Regularly inspect and make necessary repairs to
product in order to maintain proper operation.
• Make sure that pressure and vacuum are 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.
Clean this product in a well ventilated area.
Failure to follow these instructions can result in
burns, eye injury or other serious injury.
WARNING
1. Disconnect plumbing.
2. Operate product for at least 5 minutes without
plumbing.
3. Run at maximum vacuum for 10 to 15 minutes.
4. Repeat step 2.
5. Disconnect power supply.
6. Plug open ports to prevent dirt or other
contaminants from entering product.
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.
ake 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.

SERVICE KI INS ALLA ION
c
Disconnect electrical power supply cord before
installing Service Kit.
If product is hard wired into system, disconnect
electrical power at the circuit breaker or fuse box
before installing Service Kit.
Disconnect air supply and vent all air lines to
release pressure or vacuum.
Failure to follow these instructions can result in
death, fire or electrical shock.
WARNING
Electrical Shock Hazard
Gast will NO guarantee field-rebuilt product
performance. For performance guarantee, the product
must be returned to a Gast Authorized Service Facility.
Disassembly
To make reassembly easier, note the location of parts
when disassembling.
1. Disconnect electrical power to pump.
2. Disconnect air supply and vent all air lines to
release pressure or vacuum.
3. Note the direction of the arrows so you can orient
the pump head correctly during reinstallation.
4. Remove the four corner head screws and remove
the head and valve.
5. Clean the pump using water-based solvents.
4
Solvent Cleaning
Use only Gast AH255B Solvent or other
non-petroleum based solvent. Do Not use kerosene or
ANY other combustible solvent to clean product.
WARNING


May contain solid or liquid material
that can result in eye or skin damage.
Wear eye protection when using this product.
Solvent Stream
Reassembly
1. Place the valve in the valve plate pocket using the notch
in both parts as an aid in orientation.
2. Assemble the head by aligning the two holes with the two
pins in the valve plate.
3. Torque the head screws to 6 in. lbs. into the bracket.
CAUTION:
Do not over-tighten head screw(s). To do so can risk
stripping the plastic threads.
If pump still does not produce proper vacuum or
pressure, send unit to a Gast Authorized Service Facility
for repair.

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 anufacturing
Incorporated, PO Box 97, Benton Harbor ichigan 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 OE 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.
THIS EXPRESS WARRANTY EXCLUDES ALL OTHER WARRANTIES OR REPRESENTATIONS EXPRESSED OR I PLIED
BY ANY LITERATURE, DATA, OR PERSON. GASTʼS AXI U LIABILITY UNDER THIS EXCLUSIVE RE EDY 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 REPLACE ENT.
GAST WILL NOT BE RESPONSIBLE OR LIABLE FOR INDIRECT OR CONSEQUENTIAL DA AGES 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, BUYERʼS RE EDY
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 I PLIED WARRANTY
IS LI ITED SOLELY, AT GASTʼS OPTION, TO REPLACE ENT OF OR CURE OF SUCH NON-CONFOR ING 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 DISCLAI S ANY WARRANTY OF ERCHANTABILITY
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 customerʼs responsibility.
CUSTO ER IS RESPONSIBLE FOR DETER INING THE SUITABILITY OF GAST PRODUCTS FOR CUSTO ERʼS USE
OR RESALE, OR FOR INCORPORATING THE INTO OBJECTS OR APPLICATIONS WHICH CUSTO ER DESIGNS,
ASSE BLES, CONSTRUCTS OR ANUFACTURES.
This warranty can be modified only by authorized Gast personnel by signing a specific, written description of any modifications.
WARRAN Y
5
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PAR S & ORDERING INFORMA ION
6
EXPLODED PRODUC VIEW
Ref
No. Description Quantity 8R Neoprene Valve 8R EPDM Valve
& Similar Models & Similar Models
1 Head screws 4 SCR1014 SCR1014
2 Head 1 HDC1005 HDC1005
3 *Valve 1 VLV1004 (Neoprene) VLV1005 (EPDM)
4 Valve plate 1 VPL1006 VPL1006
5 Retrainer 1 RPL1006 RPL1006
6 Cup 1 CUP1001 CUP1001
7 Bracket 1 BKT1007A BKT1007A
Service Kit 1 No kit K643 (EPDM)
Each service kit
contains 1 valve
*Denotes part in
Service Kit
Parts listed are for stock models. For
specific OE models, please consult
the factory.
When corresponding or ordering parts,
please give complete model and serial
numbers.
For the name of the nearest authorized service facility, contact one of our offices or visit our website at
www.gastmfg.com.
www.gastmfg.com
ISO 9001 & 14001 CERTIFIED
Gast Hong Kong
Unit 12, 21/F, Block B
New Trade Plaza
6, On Ping Street, Shatin
N. T. Hong Kong
Ph: (852) 2690 1008
Fax: [phone]
www.gastmfg.com
World Headquarters
P.O. Box 97
2550 eadowbrook Rd.
Benton Harbor, I 49023-0097
Ph: 269/926-6171
FAX: [phone]
www.gastmfg.com

8