SPX Corporation Rotary Pump R2

To properly clean and sanitize the pump for use with food products, it may be necessary to use chemical solutions. Many of the commonly used chemical solutions could cause severe injury to personnel if contacted. The hazard is especially severe for eyes, skin, or inhalation.

Prior to using any rotary pump for the rst time, disassemble and hand clean the pump. Clean all inner and outer surfaces to remove any dirt, grit or lm that may have accumulated during shipment and installation.

1. Do Not use carbon steel wool. Particles may break o and become embedded, causing rust development.

2. Do Not use water high in iron, salt or sulfur. Use distilled water if possible.;

3. Do Not allow cleaners or bactericides to remain on surface for over 15 minutes.

4. Rinse all parts and surfaces exposed to corrosive cleaning solutions completely with cold water.

5. Do Not allow tools or other metal items to lie on wet stainless steel.

6. Only use recommended cleaners. Alkaline dairy cleaners or bactericides should contain a wetting agent and polyphosphate to suit water hardness.

Warning: Only trained personnel should perform this procedure.

Rotors and cover removed from the pump?

Hot water applied to the underside of the pump?

Product contact surfaces washed with hot water?

Rotors and cover put back on pump?

Rotors slide in freely without rubbing or contacting the edge of the cavity?

Sign off on the cleaning procedure

Pump discharge pressure tends to push the rubber cover gasket and plunger towards the front of the pump. This pressure compresses spring allowing pressure to be relieved by escaping via the rear side of the gasket and the recess of the outer cover. The venting pressure can be set by adjusting spring tension with the adjusting nut.

1. Place a pressure gauge in the downstream line close to the pump; between the pump and other downstream equipment.

2. Place a shut-o valve in the discharge line immediately downstream from the pressure gauge. Leave the valve wide open.

3. Loosen the lock nut and turn the adjusting nut clockwise as far as it will go. This is to prevent any venting during Step 4 below.

4. Pump product through system at the desired temperature and adjust the pump speed until the desired capacity is attained.

5. Check the pressure gauge for the desired pumping pressure. Example: 40 psig (2.8 kg/cm2).

6. Determine the venting pressure needed to protect the system. Example: 45 psig (3.15 kg/cm2). Venting pressure must always be higher than the pumping pressure.

7. Now turn the adjusting nut counterclockwise until only two or three threads are engaged.

Warning: Always lubricate parts after disassembly for cleaning or maintenance.

Sanitary grade lubricant used on all product contact surfaces during assembly?

When processing food products, use a sanitary grade lubricant approved for incidental contact with edible products (USDA Classication H1) on all product contact surfaces after disassembly for cleaning or maintenance.

Sign off on the lubrication process

Loosen the set screws and the top and bottom bearing adjusting nuts

Rotate the top shaft back and forth and tighten the top bearing adjusting nut until a slight resistance is felt

Mark the position of the top bearing adjusting nut and back it off one-half turn

Rotate the bottom shaft back and forth and tighten the bottom bearing adjusting nut until a slight resistance is felt

Lock the bottom bearing adjusting nut set screw after adjusting

Turn the top bearing adjusting nut so that the marks line up

Lock the top bearing adjusting nut set screw after aligning marks

If bearing adjustment has been performed and the shafts are still loose, replace the bearing

Rotate the shafts back and forth 180 degrees during bearing adjustment