INSTALLATION, OPERATION AND MAINTENANCE MANUAL

Transcription

1 B5700 SERIES ANGLE FLOW PUMPS INSTALLATION, OPERATION AND MAINTENANCE MANUAL NOTE! To the installer: Please make sure you provide this manual to the owner of the equip ment or to the responsible party who maintains the system. Part # FM Pentair Ltd.

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5 B5700 Angle Flow Pumps 5 WARNING CALIFORNIA PROPOSITION 65 WARNING This product and related accessories contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

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13 B5700 Angle Flow Pumps 12 OPERATION 13 This section contains general rules for operation of B5700 Solids Handling Pumps. Variations may exist in a particular installation between the pumps, the drivers and the accessory equipment. Therefore, specific operating instructions are not within the scope of this manual. CAUTION: BEFORE STARTING OR OPERATING THE PUMP, READ THIS ENTIRE MANUAL, AND ESPECIALLY COMPLY WITH THE FOLLOWING INSTRUCTIONS: A. BEFORE STARTING THE PUMP, ROTATE THE UNIT OR ASSEMBLY BY HAND TO ASSURE ALL MOVING PARTS ARE FREE. B. BEFORE STARTING THE PUMP, INSTALL CLOSED GUARDS AROUND ALL EXPOSED ROTATING PARTS. C. OBSERVE ALL CAUTION OR DANGER TAGS ATTACHED TO THE EQUIPMENT. D. NEVER RUN THE PUMP DRY AS THE INTERNAL PARTS ARE WATER LUBRICATED. RUNNING DRY MAY RESULT IN PUMP SEIZURE. E. BEFORE STARTING THE PUMP, FILL THE CASING AND SUCTION LINE WITH LIQUID. THE PUMP MAY BE PRIMED BY USING AN EJECTOR OR VACUUM PUMP. F. BEFORE STARTING A MECHANICAL SEAL PUMP, TURN ON THE SEAL WATER, VENT THE SEAL HOUSING AND CONFIRM SEAL WATER IS AT SUFFICIENT PRESSURE. G. BEFORE STARTING A PACKED BOX PUMP, ADJUST THE PACKING GLAND SO THERE IS SUFFICIENT LEAKAGE TO LUBRICATE THE PACKING AND ASSURE A COOL STUFFING BOX (SEE MAINTENANCE INSTRUCTIONS). H. IF EXCESSIVE VIBRATION OR NOISE OCCURS DURING OPERATION, SHUT THE PUMP DOWN AND CONSULT A FAIRBANKS NIJHUIS REPRESENTATIVE. 1. OPERATING AT REDUCED CAPACITY In a typical application covering a wide range of flow rates, a variable speed driver is often used to adjust pump capacity. This intent is taken into consideration by Fairbanks Nijhuis when selecting the pump and impeller trim. Although these pumps are applicable over a wide range of operating conditions, care should be exercised when doing so, especially when the actual conditions differ from the sold-for conditions. You should always contact your nearest Fairbanks Nijhuis distributor or factory before operating the pumps at any condition other than that for which they were sold. 2. PRIMING Since the pumped medium is used to lubricate various internal parts, running a centrifugal pump dry can result in extensive damage and possible seizing. Therefore, it is imperative that the pump be primed prior to initial start-up and that the prime be maintained throughout subsequent start-stop cycles. The priming procedure is different for positive and negative suction head systems and the following procedures should be followed: A. Positive suction head 1. Open the vent at the highest point on the pump casing. 2. Open all suction valves. 3. Allow the liquid to flow from the vent hole until all air bubbles are vented and then close the vent. 4. The pump is now primed.

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21 B5700 Angle Flow Pumps PUMP ASSEMBLY (continued) Thoroughly clean all parts to remove all oil, grease and any foreign material. Inspect for wear or damage and replace if required. Remove all parts to a clean and dust-free location for assembly. Gaskets, lip seals, grease retainers and bearings should not be reused and should always be replaced with genuine Fairbanks Nijhuis replacement parts. A. Install the lip seals (140A and 159A) in the fram (90) and thrust bearing housing cover (159). B. Preheat the thrust bearing (168) (two thrust bearings on the T60 frame) and radial bearing (163) in an oil bath or oven. CAUTION: WHEN HEATING BEARINGS DO NOT EXCEED 250 F. C. On 14" and 16" (T60 frame) pumps, install the radial bearing grease retainer (206A) on the shaft (4). On 10" and 12" (T40 frame) pumps have nonradial bearing grease retainers. D. Install the radial (163) bearing on the shaft (4). On 10" and 12" (T40 frame) pumps, see the sectional drawings for proper bearing shield position. WARNING: TO PREVENT DAMAGE TO THE BEARINGS, PRESSURE SHOULD BE APPLIED TO THE INNER BEARING RACE ONLY. E. Slide the thrust bearing housing (139) over the shaft (4). F. Install the thrust bearing grease retainer (206B) on the shaft (4). G. Install the thrust bearings (168) on the shaft (4) in a back-to-back position on 14" and 16" pumps. See the sectional drawings in this manual for proper bearing configuration. The 10" and 12" pumps are equipped with a single double-row thrust bearing which will accept thrust in both directions. Install the bearing lockwasher (162) and bearing locknut (161) on the shaft (4). H. Pack the radial (163) and thrust (168) bearings 1/2 full with the recommended grease. (Refer to the bearing lubrication instructions in the maintenance section of this manual for specific grease recommendations.) I. Slide the thrust bearing housing (139) over the thrust bearings (168) and install the thrust bearing cover (140). J. Install the shaft and bearing assembly in the frame (90) and secure the thrust bearing housing (139) and thrust bearing housing cover (140) to the frame (90) with the cap screws. K. Install the shaft sleeve (14) as follows: CAUTION: TO ENSURE PROPER BONDING, THOROUGHLY CLEAN ALL MATING PARTS WITH SOLVENT TO REMOVE ALL GREASE, OIL, DIRT, ETC. Apply a bead of Loctite No. 609 completely around the shaft on the impeller end of the shaft/shaft sleeve fit. Slide the shaft sleeve (14) part way onto the shaft (4) and rotate it at least one full revolution to evenly spread the Loctite, then slide the shaft sleeve (14) over the shaft (4), until it butts firmly against the shaft shoulder. CAUTION: ALLOW THE LOCTITE TO CURE FOR TWO HOURS BEFORE OPERATING PUMP. L. Install the deflectors (126A and 126B) on the shaft. M. If your pump uses a mechanical seal (456), follow these instructions and read the seal manufacturer's instructions before proceeding. Apply a light coat of grease to the shaft sleeve (14) on the shaft sleeve/shaft assembly. Slide the solid gland (31) and mechanical seal element (456) over the shaft sleeve (14) being careful not to damage the mechanical seal (456). CAUTION: THE GLAND AND ROTATING ELEMENT MUST BE FAR ENOUGH ONTO THE SHAFT (4) SO AS NOT TO INTERFERE WITH THE FRAME ADAPTER (34) INSTALLATION.

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