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Visual Check of Seal Integrity of Mechanical Assembly

Check for leaks in the following components. If leaks exist, contact the factory for assistance.

1. Motor ange: If leaking, replace motor ange sealing gasket (Item 11 in Figure 5-2).

2. Stroke adjustment knob: If leaking, replace stroke adjustment seal (Item 160 in Figure 5-2).

Checking the Pump Capacity

Assuming the pump has been calibrated as described in Section 3, the capacity can be checked by shutting

the valve from the supply vessel and opening the valve from the calibration column to the suction side of the

liquid end. Measure the volume of pumped liquid for a given period of time at the various settings.

If a Calibration column is not installed in the suction piping, place the foot valve (or suction line) in a calibrating

chamber (graduated reservoir). Measure the volume of pumped liquid for a given period of time at the various

settings.

Occurrence of Leak From Detection Ports

Determine whether the product collected at the detection port in the liquid end mounting assembly is

lubricating oil or the pumped uid.

If the product is pumped uid, the diaphragm has failed. If the product is lubricating oil, the oil seal bellows has

failed. Proceed with its replacement (see Section 4.6 Diaphragm and Oil Seal Bellows Replacement).

4.4 SPARE PARTS

The following spare parts should be stocked for each pump to prevent serious delays in repairs.

Parts orders must include the following:

1.Quantity required

2.Part number

3.Part description

4.Pump serial number (found on nameplate)

5.Pump product code (found on nameplate)

Note:

Always include the serial number and product code in all correspondence regarding the unit

4.4.1 GM0002~GM0050 LIQUID ENDS-PVC AND PVDF

1 each, Diaphragm Assembly

1 each, Oil Seal Bellows

1 each, Suc../Dis. Cartridge Valve Assembly

1 each, Foot Valve

1 each, Injection Valve

Note:

Injection valve and foot valve are not available for pump which connection code is “P”.

4.4.2 GM0002~GM0050 LIQUID ENDS-STAINLESS STEEL

1 each, Diaphragm Assembly

1 each, Oil Seal Bellows

2 each, Ball Check D. 9.52

Milton Roy GM Series User Manual

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