Flowserve PHL - Manual (Page 25)

PHL USER INSTRUCTIONS ENGLISH 00079593 – 10/10
Page 25 of 31
[6570.3] do not protrude above the surface of the
throat bush and the casing cover.
 Tap screw thread into the 3 holes and remove the
metal chips.
 Mount the set screws.
 Fix the set screws using a centre point.
6.9.6 Fitting the impeller wearing rings
The procedure specified below is to be followed
with regard to the impeller wearing rings [2300.1 & 2]
on one or both sides of the impeller.
 Clean the mounting surfaces of the impeller
wearing ring and the impeller.
 Use the appropriate personal
protection equipment when heating and positio-
ning the impeller wearing ring.
 Heat the impeller wearing ring to a temperature of
120 to 150

C. Take care if the impeller wearing
ring has a sprayed-on layer of chrome as this may
break away if heating or cooling is carried out
quickly.
 Push the impeller wearing ring right over the
impeller and let the whole assembly cool down.
 Tap screw thread into the 3 holes and remove the
metal chips.
 Mount the set screws [6570.2].
 Fix the set screws using a centre point.
6.9.7 Fitting the case wearing rings
The procedure specified below is to be followed with
regard to the installation of the case wearing ring
[1500.1] in the diffuser. The same procedure can be
followed when installing the case wearing ring in the
casing cover. Read casing cover instead of diffuser.
 Clean the mounting surfaces of the case wearing
ring [1500.1 & 2], the diffuser gland and the pump
casing.
 Use the correct personal protection
equipment when cooling and positioning the case
wearing ring.
 Cool the case wearing ring using liquid nitrogen.
 Lower the case wearing ring vertically in the
diffuser and wait until the case wearing ring is
tight.
 Drill 3 holes at 120 
intervals in the partition
between the case wearing ring and diffuser. Drill
the holes to a depth such that the set screws
[6570.2] do not protrude above the surface of
the case wearing ring and the diffuser plate.
 Tap screw thread into the 3 holes and remove
the metal chips.
 Mount the set screws [6570.2].
 Fix the set screws using a centre point.
6.9.8 Installing the mechanical seal
This procedure describes assembly of the
mechanical seal to the casing cover.
 Clean the supporting surfaces of the
mechanical seal and the casing cover.
 Place a new packing ring [see seal dwg.] in the
casing cover or O-ring on the seal plate,
dependent from the seal type.
 Place the mechanical seal in the casing cover
in accordance with the instructions for use
provided by the supplier.
 Tighten the nuts [6581.2] for fixing the
mechanical seal to the casing cover by
applying the prescribed torque, see section 6.5.
6.9.9 Fitting the bearing bracket
This procedure describes assembly of the bearing
bracket to the casing cover.
 Clean the mounting surfaces of the bearing
bracket and the casing cover.
 Carefully place the pump shaft in the shaft
sleeve so that the pump bracket is resting.
 Tighten the bolts [6577.5].
6.9.10 Fitting the impeller
This procedure describes assembly of the impeller
to the pump shaft.
 Attach the lifting devices to the appropriate
lifting points and observe the lifting instructions
described in section 2.3.
 Lift up the pump back pull-out unit as a single
assembly so that the end of the pump shaft is
easily accessible.
 Place the key [6700.1] in the pump shaft. See
Figure.
 Place a new packing ring [4590.3] against the
stub sleeve of the mechanical seal.
 Slide the impeller over the pump shaft.
 Fit a new packing ring [4590.1] according to
Figure.