Pump Solutions Group Neptune Series 6000 dia-PUMP MODELS 6100 thru 6250 User Manual

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7.1.5 Remove sealing nut (#39 on Parts Drawing)

7.1.6

Remove seal plate (#38 on Parts Drawing) using small brass hook to pry loose

7.1.7 Replace control rod “0” ring (#50 on Parts Drawing) & BACKUP RINGS (#51 on Parts

Drawing)

7.1.8 When replacing sealing plate take care so as to not shear the sealing plate “0” ring and

backup ring (#52 and #68 on Parts Drawing). Apply grease to “0” rings before

assembly. Take special care to place the outside backup ring (#68 on Parts Drawing)

in the right place when replacing the outside “O” ring and backup ring.

7.1.10 Replace balance of parts and fill pump with hydraulic fluid per previous instructions.

7.1.11 Follow startup procedure as if starting a new pump. Refer to Section II, Paragraph

1.0.9 and 6.0.

7.2.1 Removal of pump-head and replacement of diaphragm.

7.2.1 Remove drain plug (#67 on Parts Drawing), and drain hydraulic fluid.

7.2.2 Remove pump head bolts and washers (#65 and #66 on Parts Drawing). Move pump

head (#62 on Parts Drawing) away from pump.

7.2.3 Remove and examine teflon diaphragm (#47 on Parts Drawing). Remove and examine

the liquid side diaphragm backup plate (#64 on Parts Drawing). Replace with new

backup plate and Diaphragm, if required. When replacing the Teflon diaphragm, be

certain to line it up properly with the sealing grooves.

7.2.4 To reassemble reverse the above procedure. Laying the pump on its side facilitates

reassembly. Be certain to tighten all bolts evenly. Tighten to 65 ft. lbs.

SECTION IV

MOTOR OPERATING CONDITIONS

8.0

The normal temperature rise for standard motors is 40°C above ambient temperature and, thus, it

might appear that the motor is operating at a higher than normal temperature. This situation is normal

and should not cause concern.

As a precaution against motor overheating, it is recommended that the pump be located where

adequate ventilation is available, It is also recommended that a MOTOR STARTER WITH THE

PROPER OVERLOAD PROTECTION BE SUPPLIED AS AN ADDITIONAL SAFETY DEVICE.