Alfa Laval Copenhagen A/S
ALF – Installation, Operating and Safety Manual
ALF Instruction Manual UM_Filter_100B03
Page 34 of 67
6 Remove the retaining bolts of the flow diverter disc.
a. ALF 80: Designed with slot’n’key – no retaning bolts.
b. Take out the diverter valve disc from the filter basket inside. (only for flat discs)
7 Pull out the flow diverter shaft
a.
Attach the eyebolt in the threaded hole located on top of the diverter shaft
b.
Apply an axial pulling force to retract the shaft from the bearing house
.
c.
There is a special tool available to perform this operation which can be supplied by
Alfa Laval. See the chapter “Alfa Laval “Combined Shaft Puller and Pusher””
8 Loosen the hose clamp/rubber profile or sealing ring that is located at the end of
the filter basket.
9 Pull out the filter basket by using the basket’s handles.
10 Make an internal visual inspection on the rubber line for any damage or detached
areas. (R-type Only)
11 Check the internal parts for corrosion such as pitting, scaling and other damages
and replace them if needed.
12 Check the basket for any defects and replace if damaged.
7.3.2 Assembling
Always use the Alfa Laval service kit. It contains O-rings, sleeve bearings,
sealing ring / hose clampclamp, lifting lug and gaskets.
1 Place the disc in the basket so that it aligns with the shaft holes of the basket.
(only for discs with “pipe mounted wings”)
2 Mount the sleeve bearing in the filter basket. Ensure that the disc position is fixed
by the sleeves.
3 Insert the bearing sleeves in the upper and lower bearing houses. Ensure that the
inside of the lower bearing house is completely dry.
4 Insert the basket in the filter body. The basket slides in until it meets the guide ring
and slips over it.
5 Ensure that the bearing sleeves properly align.
6 Lubricate diverter bolts/nuts with anti-seize compound.
7 Lubricate O-rings with silicone grease.
8 Apply thin layer of anti-seize compound grease on the diverter shaft and insert it.
a. The shaft must be inserted so the holes of the shaft align with the holes of the disc.
b. There is a special tool available to perform this operation which can be supplied by
Alfa Laval. See the chapter “Alfa Laval “Combined Shaft Puller and Pusher””
9 Turn the disc to align diverter valve disc holes with the diverter shaft holes
a.
Insert bolt & nuts, then tightening them together
.
10 Mount the actuators
WARNING
ALF-P have a loose flange on the end cover – keep the locking bolt in its hole to prevent the
flange from rotating
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