Pulsafeeder Factory Service Policy Pulsafeeder’s Factory Service Policy is maintained on its website. Please source this document at this URL: http://www.pulsa.com/downloads/pdf/Pulsafeeder%20EPO%20Limited%20Warranty%20Statement.pdf Safety Considerations: 1. Read and understand all related instructions and documentation before attempting to install or maintain this equipment.
1. Equipment Inspection Check all equipment for completeness against the order and for any evidence of shipping damage. Shortages or damage must be reported immediately to the carrier and your authorized representative or distributor of PULSA GLM pumps. Included Items: •...
2.3 Piping System Attention to piping detail will assure an easy startup and long life of your GLM. Please follow these guidelines: Suction Piping Isolation Valve and Unions: Isolation valves allow the system to be isolated from the process fluid to facilitate safe servicing.
Piping System Recommendations 1. When making the threaded joint to the valve cap assembly, use a sealing compound chemically ® ® compatible with the process material (for example Loctite 8551 [Loctite is a registered trade mark of Henkel Corporation] for water service). Do not use sealing tape. The valve cap should be tightened by hand and then tightened one additional turn (i.e., 360°) with the aid of an adjustable wrench.
2.5 Discharge Pressure Requirements All PULSA GLM metering pumps are designed for continuous service at the rated discharge pressure. If the system suction pressure exceeds the discharge pressure (a condition sometimes described as “pumping downhill”), flow will be generated in addition to that generated by the pump. This results in a reduction in accuracy and loss of control over the metering process.
3. Equipment Startup 3.1 Fastener Inspection All pump fasteners should be checked prior to pump operation, and occasionally during use. This would include reagent head mounting bolts, motor mounting bolts, and the hardware that secures the pump to its foundation. Figure 5: Reagent Head Bolt tightening sequence Reagent head mounting bolts should be torqued to 70 in-lb.
Page 10
3. Open the suction and discharge line shutoff valves. 4. If the piping system design and the storage tank are such that the product flows due to gravity through the pump, reduce the discharge pressure and the system will self prime when the pump is started. In the event the discharge line contains a significant amount of pressurized air or other gas, it may be necessary to lower the discharge pressure to enable the pump to self-prime.
3.4 Calibration Figure 8: Sample Flow Calibration Curve All metering pumps must be calibrated to accurately correlate stroke length settings to measured flow rates. A typical calibration chart is shown above. Although output is linear with respect to the stroke length setting, an increase in discharge pressure decreases output uniformly, describing a series of parallel lines, one for each pressure (only two are shown).
Lubrication PULSA GLM pumps have an oil bath reservoir that is pre-filled with 350 mL of PULSAlube 9M at the factory. For optimum pump performance under normal conditions, the PULSAlube 9M should be replaced every 3,000 hours. For severe service in non-temperature controlled and/or dirty environments the PULSAlube 9M should be replaced every 1,500 hours.
(although normally, any process fluid behind a failed diaphragm would pass through the bottom drain hole). Handle with appropriate care. Figure 11: Wet End Components Qty. Item Description GLM1 and GLM3 and GLM5 and GLM2 GLM4 GLM6 Discharge Connection...
Page 14
4.2.1 Diaphragm Removal & Reinstallation 1. Adjust the stroke setting to 50% and disconnect the power source to the drive motor. 2. Relieve all pressure from the piping system. 3. Close the inlet and outlet shutoff valves. 4. Place a pan underneath the pump head adaptor to catch any liquid leakage. 5.
Check Valves 4.3.1 General Description The valve incorporates a ball, guide, and seat. Flow in the unchecked direction lifts the ball off the seat, allowing liquid to pass through the guide. Reverse flow forces the ball down, sealing it against the bevel edge of the seat and o-ring.
Page 16
2. Relieve all pressure from the piping system. 3. Take all precautions necessary to prevent contamination to the environment and personnel exposure to hazardous materials. 4. Close the inlet and outlet shutoff valves. 5. Loosen the suction valve tie-bar bolts (4) and spring the suction piping slightly away from the head, allowing liquid to drain.
4.4 Motor Removal & Reinstallation Removal 1. Disconnect and Lockout the power supply to the drive motor. 2. Disconnect the motor wiring from the motor. 3. Remove the four bolts retaining the motor to the motor adaptor. 4. The motor shaft is keyed to a plastic coupling that slides into a splined bore in the pump input shaft.
4.5 Pump Head Removal The PULSA GLM includes a Pump Head that clamps the diaphragm to the Reagent Head. In the event of diaphragm failure process fluid can come into contact with this part (it includes a drain hole to prevent fluid accumulation). Over time, it is possible for this part to suffer some level of deterioration and need replacement.
Pulsafeeder order documents. KOPkits can also be selected from the technical data sheet shipped with the pump or by a Pulsafeeder representative. A list of the PULSA GLM KOPkit numbers can also be found on the next page. The kit is identified by the model number of the pump, the wetted end material, and the process connection thread type.
Difficulty Probable Cause Remedy Product viscosity too high. Lower viscosity by increasing product temperature or dilution. Increase pump and/or piping size. Product cavitating. Increase suction pressure. Delivery gradually Check valve leakage. Clean, replace if damaged. drops. Leak in suction line. Locate and correct.
Page 22
A diaphragm style backpressure valve creates constant back pressure. A PTFE or PTFE- faced diaphragm offers maximum chemical protection and service life, and seals spring and bonnet from product. Be sure to install with fluid flow in direction of arrow on valve body. Pulsation Dampener A pulsation dampener is a pneumatically charged diaphragm-type chamber that intermittently stores hydraulic energy.
Policies & Procedures Reference our Policy Manual at http://www.pulsa.com/resources/downloads/forms.
Page 26
® PULSA MECHANICAL DIAPHRAGM METERING PUMP Bulletin: IOM-GLM-5000-Rev.A Pulsafeeder, Inc. A unit of IDEX Corporation 2883 Brighton Henrietta Town Line Road Rochester NY 14623 +1 (585) 292-8000 www.pulsa.com pulsa@idexcorp.com...
Need help?
Do you have a question about the GLM1 and is the answer not in the manual?
Questions and answers