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Istruzioni per l'uso GE, Modello 3887

Produttore : GE
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NOTICE: FOLLOW ALL SAFETY AND LIFTING INSTRUCTIONS PROVIDED IN THIS MANUAL. • Following the slide rail instructions, remove the pumping unit from the sewage containment area. UNIT MUST BE FLUSHED AND WARNING DISINFECTED, INSIDE AND OUT, PRIOR TO SERVICING. Biohazard can cause serious personal injury. MECHANICAL SEAL REPLACEMENT 1. Follow ALL instructions provided in the “DISASSEMBLY” section of this manual. 2. To gain access to the pump impeller and mechanical seal remove the four casing hex cap screws (372D). Remove casing (100) and casing gasket (351); discard the gasket. FAILURE TO REMOVE DRAIN CAUTION PLUG CAREFULLY CAN CAUSE HOT OIL TO ERUPT FROM OIL RESERVOIR CAUSING PERSONAL INJURY OR PROPERTY DAMAGE Hazardous pressure can cause personal injury or property damage. 3. Removal of the mechanical seal assembly (387) requires draining the special insulating oil from the motor cover. This is accomplished by removing the drain plug and draining the oil into an adequately sized clean receptacle. See “ENGINEERING DATA” section for required volume. 4. To remove the impeller (101), it may be necessary to heat the impeller and impeller locknut (304), three phase motors only, with a torch. Use no more heat that is necessary, as excess heat will damage the mechanical seal. Secure the impeller from rotation, and remove the impeller lock nut, by turning the lock nut COUNTERCLOCKWISE. Remove the impeller from the motor shaft by holding the motor shaft with a screw driver and turning the impeller COUNTERCLOCKWISE. 5. Remove and discard the mechanical seal and stationary seat assembly. DO NOT damage the motor shaft or the stationary seat bore. 6. Inspect and wipe clean the stationary seat bore. 7. To install the new stationary seat into the seal housing, lubricate the stationary seat bore and motor shaft with clean motor insulating oil. Using Goulds mechanical seal installation tool (A02A013), slide the stationary seat fully and squarely into the seal housing. 8. With a clean, lint free cloth, wipe the stationary face clean of all lubricating oil or debris. DO NOT scratch or otherwise damage the seal face. 9. Lubricate the inside of the rotary elastomer with clean motor insulating oil. Using the Goulds installation tool, slide the seal rotary assembly onto the motor shaft and seat fully against the stationary seat. Remove the seal installation tool. 10. Install the impeller onto the motor shaft by turning the impeller on CLOCKWISE, tighten securely. Treat the impeller with Loctite™ #271 and securely install. When provided, securely install the impeller locknut. 11. Fill the motor cover with motor special insulating oil to within 1.2" (13 mm) of the seal chamber housing. Tape drain plug with Teflon™ tape and install plug securely. 12. Reassemble casing and new casing gasket to pump assembly by installing the four casing hex cap screws, torquing in sequence to 35 lbs ft (47 N m). NOTICE:FOLLOW THE INSTRUCTIONS PROVIDED IN THE “WIRING AND GROUNDING” AND “OPERATION” SECTIONS OF THE MANUAL AFTER UNIT DISASSEMBLY, REASSEMBLY. POWER CABLE REPLACEMENT 1. To gain access to the motor cover screws follow steps 1 through 6 in the “MECHANICAL SEAL REPLACEMENT” section of this manual. 2. Remove the power cable strain relief (484B) assembly from the motor cover and slide up the cable. 3. Remove the four bearing housing socket head screws (371C). Carefully slide the motor cover from the motor assembly. DO NOT damage the power cable. 4. Disconnect the power cable wires from the motor assembly (338). 5. Remove cable from motor cover, inspect and replace as required, following the procedures provided. NOTICE: DISCARD STRAIN RELIEF ASSEMBLY. THEY CAN NOT BE REUSED. 6. Install new motor cable strain relief assembly onto cable, sliding the hex gland on first, then the washer and finally the packing. Insert the cables into the motor cover hole. Pull an appropriate amount of cable through the motor cover to allow for connecting the cable leads. DO NOT tighten the strain relief gland. 7. Connect the power cable leads to the motor assembly as START CAPACITOR REPLACEMENT follows: • Single Phase Motors – Connect the BLACK wire to motor terminal L1. Connect the WHITE wire to 1. On single phase motors only, to gain access to the motor start capacitor (376), follow steps 1 through 5 in the “POWER CABLE REPLACEMENT” section of this motor terminal L2. Connect the GREEN wire to the manual. motor ground. NOTICE: DISCARD STRAIN RELIEF ASSEMBLY. • Three Phas...

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