Peerless Pump Company Pump C840

Tighten gland bolts (17B) as required to limit leakage after pump is running

Ensure gland enters the box square to the shaft to exert uniform pressure around the packing

Monitor packing (13) for excessive leakage during operation

Check packing rings (13) for issues

Install 3 rings of packing (13)

Is lantern ring (29) furnished?

Install 2 rings of packing in adapter cavity if lantern ring is furnished

Disconnect power to the pump driver before starting any repairs

Refer to Bulletin No. 2880549 for the pump removal procedure to follow

Ensure pump is operated at correct pressure, flow rate, and liquid temperature

Ensure only the original liquid is pumped unless authorized by Peerless Pump

Pump Disassembly - Mechanical Seal Type

Remove any seal piping between pump discharge and stuffing box of adapter

Inspect shaft sleeves for excessive wear

Use care not to scratch the sleeve surface when removing shaft sleeve

Replace shaft sleeve O-ring at each disassembly

Reassembly — Post-assembly checks

Rotate shaft by hand after installing impeller lock screw (26) to check for free movement

Rotate shaft by hand after seating adapter (71) to check for no binding or hang-up

Tighten gland bolts (17B) on packed pump to limit leakage after pump is running

Verify seal piping (tubing) is installed between pump discharge and stuffing box of adapter if used

Verify casing cap screws are tightened uniformly in a star pattern to correct torque

Visually inspect and replace parts that are damaged and affecting the serviceability or sealing

Emphasize inspection of mating parts having relative motion — casing rings, for example

Check O-rings, gaskets, and seals for shrinkage, cracks, nicks or tears

Check packing rings for excessive compression, fraying or shredding, embedded particles (dirt or metal) — replace if defective in any way

Examine impeller passages for cracks, dents, gouges or embedded material

Inspect shaft sleeves (14) for excessive wear — replace sleeves that are worn

Inspect lapped surfaces of sealing washer and floating seat for chipping, gouges, nicks, scratches or other damage — these surfaces must be free from any defect — if lapped surfaces are damaged, replace the entire seal