Owner manual

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81R and 82R SERIES

ROCKING PISTON OIL-LESS PUMPS

OPERATION & MAINTENANCE 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.

• 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.

• Consult your Gast Distributor/Representative

before using at high altitudes.

• This pump is oil-less and requires NO lubrication.

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

PART NO. 70 - 6855 G498PL (REV-D)

Model 82R6 Shown

Summary of content (8 pages)

PAGE 1
PART NO. 70 - 6855 G498PL (REV-D) 81R and 82R SERIES ROCKING PISTON OIL-LESS PUMPS OPERATION & MAINTENANCE MANUAL Model 82R6 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. Product Use Criteria: • • • • Pump only clean, dry air. Operate at 32ºF - 104ºF (0ºC - 40ºC). Protect unit from dirt & moisture.
PAGE 2
Plumbing Remove plugs from the IN and OUT ports. Connect with pipe and fittings that are the same size or larger than the productʼs threaded ports. Be sure to connect the intake and exhaust plumbing to the correct inlet and outlet ports. Ports will not support plumbing. 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.
PAGE 3
Minimum gage for extension cords Amps 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 above diagram.
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MAINTENANCE SHUTDOWN PROCEDURES It is your responsibility to follow proper shutdown procedures to prevent product damage. NEVER ADD OIL TO THIS OIL-LESS PUMP. WARNING Proper shutdown procedures must be followed to prevent pump damage. Failure to do so may result in premature pump failure. Gast Manufacturing Rocking Piston Oil-Less Pumps are constructed of ferrous metals or aluminum which are subject to rust and corrosion when pumping condensable vapors such as water.
PAGE 5
1. Disconnect electrical power to pump. 2. Disconnect air supply and vent all air lines to release pressure or vacuum. 3. Mark the orientation of the ports so cover will be reinstalled correctly. 4. Remove screws from the head of the pump. Remove the head of the pump. 5. Mark orientation of valve plate(s). Remove valve plate(s). 6. Remove and discard old cups(s), retainer screws, cylinder O-ring(s), head O-ring(s), valves and valve retainers. 7. Install new cup(s) on rod(s) facing up. 8.
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EXPLODED PRODUCT VIEW, PARTS & ORDERING INFORMATION REF 1A 1B 2 3∆ 4 5∆ 6 7 8A ∆ 8B ∆ 9 10 11 ∆ 12 13 ∆ 14A 14B 15 16 17 18 *** DESCRIPTION HEAD SCREW HEAD SCREW HEAD COVER HEAD O-RING VALVE LIMITER LEAF VALVE VALVE PLATE VALVE RETAINER SELF TAPPING SCREW SELF TAPPING SCREW O-RING CYLINDER RETAINER SCREW RETAINER PLATE PISTON CUP FAN (CW) FAN (CCW) GRILLE SHROUD PRESSURE SAFETY VALVE VALVE PLATE ASSEMBLY SHROUD SCREW SERVICE KIT QTY 4 4 2 2 2 4 1 2 2 2 2 2 4 2 2 1 1 2 1 1 8 1 81R640-P101 AP135 AP136 AP
PAGE 7
MAINTENANCE RECORD DATE PROCEDURE PERFORMED 7
PAGE 8
PART NO. 70 - 6855 G498PL (REV-D) TROUBLESHOOTING CHART Low Vacuum Pressure • • • • • • • • • • • • • • • • • • • • • • High Vacuum Pressure • • • • • Pump Overheat • Won’t Start • • Excess Noise • • • • • • • • • • • • • • • • • Reason and remedy for problem. Filter dirty. Clean or replace. Muffler dirty. Clean or replace. Valves dirty or valves bent. Clean or replace. Worn cup. Repair or replace. Relief valve set too high. Inspect and adjust.