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Graymills GM 12-00 Operation And Maintenance Instructions

Air operated double diaphragm pump 1/4"
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Graymills
Air Operated
Double Diaphragm Pumps
1/4" Model
Operations and
Maintenance
Instructions
WARNING/CAUTIONS
Read all these SAFETY INSTRUCTIONS
BEFORE installing or using this equip-
ment. Keep this manual handy for refer-
ence/training.
Contents
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Graymills Corporation 3705 N. Lincoln Avenue Chicago, Illinois 60613
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773/248-6825 FAX 773/477-8673 www.graymills.com
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795-08690
GM 12-00

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Summary of Contents for Graymills GM 12-00

  • Page 1: Table Of Contents

    ......Graymills Standard Warranty ..... Graymills Corporation 3705 N. Lincoln Avenue Chicago, Illinois 60613 773/248–6825 FAX 773/477–8673 www.graymills.com...

  • Page 2: Warnings

    If you are not sure, or if you have questions about installation or operation, call Graymills Corporation. D Never alter or modify any part of this equipment; doing so could cause it to malfunction.
  • Page 3 D Maximum temperature limits are based upon mechanical stress only. Certain chemicals will significantly reduce maximum safe operating temperatures. Consult Graymills for chemical compatibility and temper- ature limits. United States Government safety standards have been adopted under the Occupational Safety and Health Act. You should...

  • Page 4: Installation

    Installation Tightening Threaded Fasteners Before Air Exhaust Ventilation First Use WARNING After unpacking the pump, and before using it for the first time, check and retorque all external fasteners. See the TOXIC FLUID HAZARD Service section for torque specifications. After the first day of operation, retorque the fasteners again.

  • Page 5: Technical Data

    The pump speed can be controlled in one of two ways: To control it on the air side, install an air regulator (Order Graymills Part No. FRL–2). To control it on the fluid side, install a fluid valve near the outlet.
  • Page 6 CAUTION designs. Typical installation includes (not supplied by Graymills): For solenoid operation, the pump must exhaust through D For solenoid operation: a four-way, 5-port, 3-position the solenoid. Failure to exhaust through solenoid could cause the diaphragms to fail.

  • Page 7: Operation

    Operation Pressure Relief Procedure Starting and Adjusting the Pump WARNING WARNING To reduce the risk of serious injury, splashing in the To reduce the risk of serious injury, including splashing eyes or on the skin, and toxic fluid spills, never fluid in the eyes or on the skin, follow this procedure move or lift a pump under pressure.

  • Page 8: Maintenance

    Maintenance Lubrication Flushing and Storage The air valve is lubricated at the factory and designed to Flush the pump to prevent the fluid from drying or freezing operate without additional lubrication. in the pump and damaging it. Always flush the pump and If added lubrication is desired, every 500 hours of operation relieve the pressure before storing for any length of time.

  • Page 9: Troubleshooting

    Re-mount fluid manifold so OUT port is up. The pump leaks air or does not operate. Air is supplied to Port A and Port B at the same Replace both diaphragms (30). Contact Graymills. time. Check your installation. Solenoid exhaust is plugged.

  • Page 10: Service

    To reduce the risk of serious injury whenever you are Replacing Diaphragms instructed to relieve pressure, always follow the Pres- sure Relief Procedure on page 7. Contact Graymills for information. Figure 3 Lips of u-cups Figure 4 (3) must face...
  • Page 11 Service Replacing Check Valves Use Service Kit Part No. 784–90610. Replace each pair of 6. Reconnect the pump. check valves as follows. See Fig. 5. Figure 5 1. Relieve the pressure, and disconnect the air line from the pump. WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pres- sure Relief Procedure on page 7.

  • Page 12: Dimensions And Mounting Hole Layout

    PLIED WARRANTIES OF MERCHANTABILITY AND refused. Graymills will promptly examine the material and determine if it is defective and within the Warranty period. Graymills Corporation 3705 N. Lincoln Avenue Chicago, Illinois 60613 773/248–6825 FAX 773/477–8673 www.graymills.com...

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795-08690

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