Mechanical Seal - salmson SIL Serie Instalacion Y Puesta En Servicio

ENGLISH
required to prevent accidental uncoupling). The hoisting rings on
the motor are only intended for guiding suspended loads.
The hoisting rings on the motor are only designed to support
the weight of the motor, and are not intended for the entire
pump.
- Minimum axial distance between the wall and the fan cover:
removal dimension 200 mm + Ø of fan cover.
- As a rule, the insulating valves should be fixed upstream and
downstream of the pump, to avoid the complete draining of the
installation upon inspection or replacement of the pump.
- The piping can be fitted to the pump without constraint.
- The drain cock should always be turned upwards
(See FIG. 6 - ref. A9).
- If the pump is used in air-conditioning or refrigeration installations, the
condensate falling into the housing can be emptied via the holes in
the housing.
- All mounting positions are authorised, except that with the motor
at the bottom.
If the motor shaft is in a horizontal position, the motors of the SIL
and PBS models should be supported when the nominal power
reaches or exceeds 5.5 kW. If the motor shaft is in a horizontal
position, the motors of the DIL model should be supported when
the nominal power reaches or exceeds 4 kW.
Mounting position :
SIL (See FIG. 1) - DIL (See FIG. 2) - PBS (See FIG. 3)
The motor's terminal box should not face downwards. If required,
the motor or hydraulic assembly can be turned over once the
hexagonal head bolts have been removed.
Do not damage the o-ring of the housing during
CAUTION !
this operation.
- In case of intake from a reservoir, ensure that you maintain a
sufficient level of liquid above the pump's inlet flange, so that this
never operates when dry. The minimum inlet pressure should be
observed.
5.2 Electrical connection (See FIG. 4)
All electrical connections must be carried out by a certified
electrician in compliance with the standards in force.
- In compliance with the I.E.C. standard, the electrical connections
should be connected to a fixed branch line, equipped with a
contactor, or a multi-pole switch with a 3 mm contact gap.
- In order to ensure watertightness and pull relief on the stuffing
boxes, use a connecting cable with a sufficient outside diameter.
Put the stuffing boxes into position or install the cables so as to
ensure that water cannot leak into the terminal box.
- If pumps are used in the installations or the temperature exceeds
90°C, you must use a connecting cable that is resistant to these
temperatures.
- The connecting cable should be positioned so that it never comes
into contact with the pipework and/or pump casings and the
motor housing.
- Check the type of current and the mains power supply.
- Play close attention to the information on the motor's identification
plate.
- Protection of the mains side by fuses: depends on the motor's
nominal current.
- Play close attention to the grounding.
- The electrical connection circuit diagram can be found under the
terminal box's cover (See FIG. 4).
- The motor must be protected against the risk of overloads by a
circuit breaker-guard, or a CTP sensor relay (depending on the
option chosen).
Installing the circuit breaker-guard :
Direct start-up : installation on the motor's nominal current
according to the indications on the motor's identification plate.
Y-Δ start-up (two cases) :
1 - Thermal magnet connected to the L1, L2, L3 electric line. In this
case, the intensity setting must be identical to that for direct start-
up (In).
- 2 - Thermal magnet connected to the motor's U2, V2, W2 or U1,
V1, W1 connections. The intensity setting must be equivalent to
in or Inx 0.58.
V 3
In certain special configurations, the motor is equipped with a CTP
sensor. In this case, remove the CTP sensor from the sensor relay's
trigger.
The maximum power supply to the sensor's terminals must be
set to 7.5 V maximum. A higher power supply would destroy
the CTP sensor.
- The mains connection to the terminal box depends on the P2
motor's power, the power supply from the mains and how the
power is switched on. The appropriate assembly of the links in the
terminal box is set out in the table below (See FIG. 4).
Type of
start-up Mains power supply
3~230 V
direct 4a) wiring Δ
Y-Δ start-up remove the impossible
4c) strips
- If an automatic connecting device is connected, pay close
attention to the information in the installation and use manual.
6. STARTING
- The pumps and the inlet and outlet pipes controls must be filled
and drained.
- To avoid noises or cavitation damage a minimum entry pressure
must be applied at the pump's suction flange. This minimum entry
pressure depends on the pump's operating conditions and where
the pump is located and must be determined according to these
elements. The pump's NPSH value and the steam pressure of the
piped liquids are vital parameters for determining the minimum
entry pressure.
- Drain the pumps by unscrewing the bleed screw
(See FIG. 6 - ref. A9).
If the pumped liquids are hot, take care to avoid the risk of
burns.
Dry running deteriorates the mechanical seal.
CAUTION !
- Briefly switch on several times to check whether the direction of
rotation corresponds with the arrow indicated on the motor. If the
direction is not correct, perform the following steps :
In the case of direct start-up, swap the 2 phases on the motor's
terminal box (for example, changing L1's place with L2).
In the case of Y-Δ, start-up, swap each coil's 2 start and end wires
on the motor's terminal box (for example, changing V1's place
with V2 and W1's place with W2).
7. MAINTENANCE
Switch the pump OFF before doing any work on it.

7.1 Mechanical seal

The mechanical seal does not require servicing. Leaks may occur
throughout start-up. A visual inspection must occasionally be carried
out however. If there is a clearly visible leak, change the seal.
Salmson offers repair kits containing all the parts needed for seal
replacement.
Replacing of the mechanical seal (See FIG. 6)
- Turn off the installation and take measures to prevent the
installation from accidentally starting up again.
- Close the pumps' inlet and outlet valves.
- Lower the pumps' pressure using the bleed screw.
12
Power of motor Power of motor
P2 ≤ 3 kW P2 ≥ 4 kW
Mains power supply
3~400 V 3~400 V
4b) wiring Y 4a) wiring Δ
remove the
4c) strips