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Tensioning Guide
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C-120 pulleys
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Daily Electrical System Inspection
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Alfa Laval Rotary Lobe Displacement Pump GHPD-322

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Maintenance Plans for Alfa Laval Rotary Lobe Displacement Pump Model GHPD-322

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Initial 150 Hours Lubrication Oil Replacement

1. The pump will NOT be supplied oil filled.

2. First change - After 150 hours of operation.

3. Only use the oil/grease types recommended by your supplier.

4. Fill with oil through the filler plug to the level indicated in the sight glass.;

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Packed Gland Replacement

– The packing rings are located within the gland housing and are tightened onto the shaft sleeve by adjusting the gland follower. On flushed packed glands a lantern ring replaces the middle ring of packing. The shaft sleeve is retained to the shaft by three socket set screws and is sealed by an 'O' ring.

REMOVING THE PACKED GLAND

1. Release and pull back the gland follower.

2. Remove the rotorcase with gland housing, packing and gland follower still assembled.

3. Loosen the shaft sleeve socket set screws and extract the sleeve from the shaft.

4. Inspect and replace the packing and shaft sleeve if necessary.

FITTING THE PACKED GLAND

1. Lubricate the 'O'ring, locate in shaft sleeve and slide onto the shaft.

2. Tighten up the socket set screws.

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3000 Hourly Lubrication Oil Replacement

1. The pump will NOT be supplied oil filled.

2. First change - After 150 hours of operation.

3. Fill with oil through the filler plug to the level indicated in the sight glass.;

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1 Weekly Pump Maintenance

1. Checking the oil level in the gearcase (if applicable).

2. Checking the mechanical seals for leakage and replacing as necessary.

3. Adjusting the packed glands to control leakage.

4. Checking the oil seals for leakage.

5. Check pumping pressures.;

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Flushed Hyclean Seal Replacement

– The seal rotary face is driven by a pin which locates in a slot on the shaft. A washer is located between the shaft shoulder and rotary face. A seal between the rotary face and shaft is provided by an 'O' ring.

– The stationary face is prevented from rotating as it has a flat side which sits in the rotorcase bore. Face to face contact is provided by a wave spring.

– Axial movement of the stationary face is prevented by a retaining clip. An 'O' ring within the rotorcase bore provides a seal onto the stationary face.

– A seal housing encloses the hyclean seal and is seal by an 'O' ring and retained to the rotorcase by socket head cap screws. A lip seal sits within the seal housing and runs on the rotary face, thus providing a seal.

CAUTION! SEAL FACES ARE BRITTLE - TAKE EXTREME CARE WHEN HANDLING. REMOVING THE FLUSHED HYCLEAN SEAL

REMOVING THE FLUSHED HYCLEAN SEAL

1. Carefully support and remove the rotorcase with the seal housing and stationary face still attached.

2. Slide the rotary face from the shaft.

3. Remove the seal housing screws to inspect the seal.

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