MHP-TN USER INSTRUCTIONS ENGLISH 71576313 - 02/07

If a check shows a bad running of the motor pump unit, the user must:

a)Refer to the "fault finding chart" chapter

7 of this leaflet to apply the recommended solutions.

b)Ensure that your equipment corresponds to the arrangements of this leaflet.

c)Contact Flowserve after-sales Department if the problem persists.

6.2.4 Gland packing6.2.4.1 Pump fitted with a packed gland

A well run in and correctly adjusted packing gland requires little maintenance. If, after some time, the leakage becomes too great, the gland should be tightened again in order to return these to a normal level.

If re-tightening is not possible, new packing must be installed.

6.2.4.2 Gland packing inspection and removal

a)Remove the shield guards.

b)Slide back the gland.

c)Remove the packing rings with an extractor designed for this purpose (including the lantern ring if it exists; note its position and its direction of rotation).

d)Inspect the state of the sleeve surface; the presence of many marked grooves will indicate that it must be replaced.

e)Carefully clean the different pieces of the packing gland.

6.2.4.3 Gland packing fitting

If the packing is supplied as cord the packing must be cut so that the external diameter is lightly tightened and there is an initial gap between the sleeve and the packing ring.

For that purpose, wind the packing helically around the shaft sleeve or a chuck of the same diameter. (Take precautions to avoid damaging sleeve).

Example of straight cut

Example of bevel cut

Ensure a tightening on the stuffing box housing and not on the sleeve.

SETTING OF PACKING

Follow the instructions:

a)Assemble of the packing in S.

b)Stagger by about 90° between two rings.

c)Assemble packing after packing.

After setting the last packing ring, secure the packing with the gland and tighten the nut by hand.

After tightening, the shaft should turn by hand as easily as before the setting of the packing.

D

D1

A x A

Nb x length

 

 

 

in mm

mm

mm

mm

(in.)

(in.)

(in.)

(in.)

 

 

 

 

 

55

76

10

4 x 207

(2.17)

(2.99)

(0.39)

(4 x 8.15)

6.2.5 Internal coating

If the pump has an internal coating, this coating must be inspected periodically. Any wear or cracks of the coating found must be immediately repaired.

Failure to do this may lead to accelerated wear of the coating during operation and corrosion of the exposed base metal, depending on the material and pumped liquid.

Special attention must be paid to the coating edges. Any loss of coating material is considered to be normal wear and tear on the pump and is not considered as warranty.

Flowserve has applied the coatings according to the supplier's instructions but will not be held responsible for coating wear or cracks that may develop over time.

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