SPP id: Version 14 > / 120601 / Replaces 110901 / en /
N31572
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Series
2.15
INSTRUCTIONS
June 2012
Page
ISO
G
COPYRIGHT © SULZER PUMPS FINLAND OY
ORIGINAL INSTRUCTION
USER'S MANUAL – AHLSTAR
Operation
•
Fill the pump so that at least the suction pipe and pump casing are filled with liquid. Let the air come out of
the upper part of the tangential volute casing by opening the screwed plug (903.13) in connection (C54.11).
•
Check that the suction valve is fully open and discharge valve closed.
•
Start the motor.
•
Open the discharge valve gradually until the desired amount of liquid is reached.
•
Check that the gland packing leakage is still abundant. If not, slacken the stuffing box gland immediately. If
this does not help and the gland packing becomes hot, stop the pump and find out the reason for the
disturbance. When the gland packing has been operating trouble-free for 10 minutes it may be tightened.
Tighten it by turning the hexagonal nuts approx. 1/6 turns at a time at 5 - 10 minutes’ intervals until the
leakage is at least 30 - 80 drops a minute. While tightening, make sure that the stuffing box gland remains
perpendicular to the shaft.
•
Follow the instructions given by the manufacturer of the sealing water equipment for filling, bleeding and
operation setup.
2.2 Pumps equipped with liquid ring pumps (-LM, -S)
•
Open the sealing liquid and/or flushing liquid valves and adjust the pressure and the flow rate to a suitable
level in accordance with Table 2.
•
Let the flushing liquid flow for about 1 to 2 minutes so that all necessary spaces are filled with the liquid.
•
Make sure that the suction valve is fully open and that the discharge valve is closed.
•
Start the motor.
•
Adjust the desired vacuum by means of the vacuum relief valve (Fig. 2):
Undo the locking nut (6) which locks the valve spindle (2).
Turn the valve bushing (3) to the desired direction while holding the valve spindle (2) in place. When you turn
the bushing (3) clockwise, the vacuum grows as the force of the spring (4) closing the valve spindle (2)
increases. When you turn the bushing (3) counterclockwise, the vacuum reduces as the force of the spring
(4) decreases.
When the desired vacuum is reached, lock the valve spindle (2) to the bushing (3) with the locking nut (6).
6
3
4
2
7
1
5
Fig. 2