22.10.2002
GB
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10
Base
Fit the guide plate, pos. 6d, the gasket, pos. 37, and the inlet part, pos. 44, in the base. Make sure that the
projection on the upper side of the guide plate engages with the inlet part.
Outer sleeve
CRN 16 S: Fit the clamping plates, pos. 125 and 132, to the outer sleeve. The chamfer must point towards
the retaining ring. Fit the retaining rings, pos. 126 and 133, into the recesses of the outer sleeve.
Place the shaft holder, pos. C, in the vice. Place the shaft, pos. 51, in the shaft holder and tighten the vice.
The threaded shaft end must be uppermost and the opposite end must be flush with the lower edge of the
shaft holder.
Fit the stop ring, pos. 62, in the recess of the shaft.
Fit the spacer for shaft seal, pos. 61, to the shaft with the driving dogs pointing towards the vice.
Continue the assembly up to the nut, pos. 67, see section
6. Order of assembly for chambers and impellers
.
CRT 16: The nut pos. 67 is locked by a split pin pos. 67.a instead of a washer pos. 66.
Lubricate the nut, pos. 67, with BONDERLUBE. Fit the nut and tighten to the torque stated in section
2.
Torques and lubricants
.
Slacken the vice and lift the chamber stack off the shaft holder.
Fit the chamber stack with the smooth shaft end pointing upwards and press it down so that it engages with
the inlet part in the base.
Fit the outer sleeve, pos. 55, to the base. Do not forget the gasket, pos. 37.
CRN 16 S: Lubricate and fit the hexagon socket head screws, pos. 134, and the washers, pos. 135. Tighten
the screws diagonally to the torque stated in section
2. Torques and lubricants
.
Fit the rotating shaft seal part, see section
4. Shaft seals
.
Moisten the rubber parts with water before they are fitted.
Make sure that the rubber parts are not damaged on the shaft pin hole and that the seal rings are not ex-
posed to blows or knocks.
Check that the spacer for shaft seals (pos. 61) engage when the spring is compressed. The spring will then
press the seal ring upwards to a neutral spring position.
Fit the top chamber, pos. 3, and the disc spring, pos. 60.
Before fitting the pump head, pos. 2, check that the gasket, pos. 37, and the stationary shaft seal part are
positioned correctly.
In the case of shaft seals with stationary and rotating seal rings of tungsten carbide, lubricate the seal faces
with silicone oil. Part number, see section
2. Torques and lubricants
.
Lubricate the seal faces only.
Fit the pump head to the chamber stack with the air vent screw, pos. 18, in the required position.
CRN 16 S: Lubricate and fit the hexagon socket head screws, pos. 127, the washers, pos. 129, and the
nuts, pos. 128. Tighten the nuts diagonally to the torque stated in section
2. Torques and lubricants
.
Lubricate the threads of the staybolts. Replace the washers, pos. 66a, and the nuts, pos. 36, and tighten
diagonally to the torque stated in section
2. Torques and lubricants
.
Fit the motor and turn it to the required terminal box position. Lubricate the screws, pos. 28. Fit the screws
and tighten diagonally to the correct torque.
Fit the shaft pin pos. 10 in the shaft pin hole. Fit the coupling, pos. 8. Lubricate the hexagon socket head
screws, pos. 9. Fit the hexagon socket head screws, tighten and leave loose.
Check that the gaps either side of the coupling halves are equal and that the chamber stack is in its bottom
position.
Raise the chamber stack 1-2 mm from its bottom position by means of a large screwdriver or a similar tool
inserted underneath the coupling.
