Flowserve WPG IDP Manual de usuario descargar pdf (Pagina 23)

WPG and WPH USER INSTRUCTIONS ENGLISH 26999969 10-12

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e) Set the seal to the same position as marked when

dis-assembling the unit or refer to manufacturer's

instructions to position the mechanical seal

rotating elements on the shaft or sleeve.

f) Tighten any drive screws in the seal drive collar.

g) For precise compression most cartridge seals

should be set after complete pump assembly.

h) Refit the seal plate and check that the seal is not

over-compressed or locked up solid.

i) Fit new casing gasket and refit the complete

stuffing box cover/bearing housing unit to the

pump casing. Coat the screws with anti-galling

compound and tighten into casing.

6.9.4 Rotary oil seals

a) Oil lip seals are not totally leak free devices and oil

leaking from a bearing housing can be visually

unpleasant in a clean pump room. Very careful

fitting practice for lip seals is therefore essential.

Particular attention must be paid to protecting the

seal from keyways by using shimming or tape and

careful handling of the shaft to avoid even fine

longitudinal scratches.

b) Perfectly assembled oil seals can have a leakage

rate from almost zero to 40 mg/hr. This is

equivalent to approximately 2 drops per hour and

at this rate the constant level oiler would need

filling only once every 6 months.

c) Fit oil seal carefully into position and refit the drive

side bearing cover and screws and tighten up.

d) Refit coupling key and pump half coupling using

heat, if necessary, to facilitate fitting. Do not

hammer the pump half coupling onto the shaft as

this will cause loading and damage to the bearings.

e) Rotate pump shaft by hand to check for freedom

of rotation.

6.9.5 Refit to baseplate

a) Refit pump to baseplate and check coupling

alignment as described in section 4.7, Final shaft

alignment check.

b) Refit all safety guards and ensure all other items

have been re-attached and all fasteners tightened.

as section 6.6, Fastener torques,

6.9.6 Wear ring clearances

Pump

size

Impeller hub diameter

(mm)

Diametral ring or

casing clearance

(mm)

Front

Back

Front

Back

65-100

82.54/82.45

0.64/0.4

0.64/0.46

50-125

50-160

40-200

40-250

32-125

70.54/70.47

70.75/70.47

0.60/0.46

0.60/0.4

32-160

32-200

65-125

93.54/93.45

93.54/93.4

0.64/0.46

65-160

50-200

50-250

50-315

80-125

111.47/111.38

93.54/93.45

0.71/0.53

0.64/0.46

25-161

55.54/55.47

0.60/0.46

80-160

111.47/111.38

0.71/0.53

65-200

65-250

65-315

100-160

152.47/152.37

0.67/0.53

100-200

100-250

125-250

100-315

125-315

100-400

125-225

168.10/168.00

0.80/0.60

0.80/0.63

125-400

184.00/183.90

0.71/0.53

150-250

209.40/209.30

0.80/0.60

0.80/0.63

150-315

150-400

200-401

269.24/269.14

0.85/0.65

150-500

219.47/219.37

0.73/0.53

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Flowserve WPG IDP Manual de usuario Pagina 23

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