Safety Precautions; Start-Up - Andritz SD 39 Série Instructions De Service

Series SD 39
• Delivery without first oil filling: Remove the vent stops, fill the
bearing housing up to the middle of the oil level display glass
and replace the stops.
(1)
For oil grades and amounts see para. 5.2.1.2. Do not mix differ-
ent oils.
4.1.2 Shaft sealing
Observe any specific instructions, cross-sections, dimension
sheets or appendices.
4.1.2.1 Gland packing
• Use the loose gland packing which has been delivered along
with the set.
• Tighten the gland gently and evenly by hand.
• Gland packing must not be allowed to stick to the shaft. The
shaft must remain freely moveable.
4.1.2.2 Mechanical seal
For pumps with a single mechanical seal with quench arrange-
ment and quench reservoir: Depending on the liquid to be
pumped the quench reservoir should be filled to half its capacity
with water or other liquid.
4.1.3 Filling and venting
• Close the discharge isolation valve and, if fitted, open the inlet
isolating valve.
• Fill the pump with the liquid to be pumped, venting the trapped
air by removing the plugs on the pump casing. If arranged for
operation on a suction lift then use a filling funnel or pipe.
• If vent screws are present on the suction or pressure side of
the casing, open them to let air escape.
• When a positive head is available from charged delivery sys-
tem, the pump can be back filled through the delivery non-re-
turn valve by-pass or lifting lever (if fitted).
• Turn the pump shaft several times by hand. The pump is
vented when air bubbles no longer escape from the vent
holes.
• Fill the auxiliary valves for sealing and flushing media with
water and purge the system of any air. Close the screw plugs
and the vent plugs.
• Pumps fitted with mechanical seal: Open the vent plugs of
the seal cavity (where fitted). Fill the seal cavity with water
and purge the system of air. Before starting check the seal
cavity for trapped air. The seal may be seriously damaged by
dry running! After checking, replace the plugs.
(3)
(2)
oil lubrication
• Function of a mechanical seal: Two slide faces rub against
each other and are lubricated by a liquid film at the same time.
In the case of single-action mechanical seals, the film is
formed by a pumping medium. A leakage of between 0.2 and
5 ml/h is possible depending on running smoothness, pres-
sure, rotational speed and shaft diameter (mechanical seals
are wearing parts for which no guarantee can be given).
4.1.4 Electrical connections
Electrical installations may only be carried out by
qualified personnel in compliance with IEEE Regula-
tions and Statutory Requirements.
• The motor must be provided with motor protection switch.
• The electricity supply provided must match the motor name-
plate details.
• The motor terminal links must be positioned to suit the supply
and the proposed starting arrangement.
4.1.5 Checking the direction of rotation
The rotational direction must comply with the marking on the
pump. Use a rotating field gauge. If a gauge is not available
then, providing that the pump contains water or is separated
from the drive, the motor can be briefly activated and then im-
mediately shut off to carry out the test. If the rotation has to be
reversed, then arrange for this to be carried out by an electri-
cian.
Do not run the pump backwards!
4.2

Safety precautions

Do not operate the pump set before fixing guards for
moving parts such as the coupling, V-belt drive etc.
If guards are not delivered with pump then they must
be provided by the installer before operation. Do not
reach under guards with hands!
4.3

Start-up

4.3.1 Initial start-up/restarting
• Start the pump only if it is fully primed and when there is dis-
charge system pressure.
• Open the sealing and flushing valves.
• If the discharge pipework is empty:
- Close the delivery isolating valve completely before open-
ing it slightly.
- Start the pump.
- Observe the delivery pressure gauge and motor ammeter
and gradually open the discharge valve as the system
pressure increases. Take care not to open the valve too
rapidly as pressure surges may be created in the system.
- When the system is filled and any high points vented, reg-
ulate the discharge valve to create the delivery pressure
corresponding to the specified pump generated head (dis-
charge head plus suction lift or discharge head less inlet
head). Further observe pressure gauge and motor amme-
ter.
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