7
1. GENERAL
1.1 Applications
For the pumping of all clear liquids that are chemically neutral and
contain no abrasive particles in suspension.
• Central heating
• Air conditioning
• Cold water circuit
• Water transfer
1.2 Specifications
LRLA
Set consisting of pump im coupling shaft + lantern
assembly.
JRLA
Set consisting of dual 2 imp 2 coupling 2 lan-
tern assemblies and a discharge check valve allowing single- and
dual-pump operation.
The suction and discharge ports are in-line.
• Max. service pressure
: 10 bar
• Temperature range
: - 10 °C à + 110 °C
ISO PN 10 flanges (NF E 29203) with gasket contact face.
2. SAFETY
LRead these instructions carefully before installing and starting up.
Pay special attention to the points concerning the safety of the
equipment for the intermediate or end user.
2.1 Symbols used in the manual
Warning.
Instruction concerning electricity.
Calls attention to a potential risk that might affect
the safety of people.
3. TRANSPORT AND STORAGE
When taking delivery of the equipment, check that it has not been
damaged in transport. If anything is found wrong, take the necessa-
ry steps with the carrier within the allowed time.
If the equipment delivered is to be installed at a later time, store it in
a dry place and protect it from impacts and outside influences (mois-
ture, frost, etc.)
.
For a normal shutdown:
- Close the discharge valve and stop the pump.
For a prolonged shutdown, if there is a risk of frost:
- Close both pump isolating valves and if necessary drain the pump
casing (through the plug(s) provided on some pumps).
- When starting back up, check that the motors turn freely, without
sticking; fill the pump and the suction pipe; bleed the mechanical
seal.
4. PRODUCTS AND ACCESSORIES
4.1 Description
single and dual pumps (see Fig. 1)
1111A : Single pump casing (LRLA)
1111B : Dual pump casing (JRLA)
2250
: Impeller
3132
: Lantern
4220
: Rotating part
4240
: Fixed part
4610A : Pump casing O-ring
6545A : Keeper ring on shaft
6545B : Keeper ring on shaft
7114
: Coupling shaft
7450
: Coupling guard
8010
: Electric motor with standard flange
9621A : Pressure tap plug
9621B : Pump casing drain plug (LRLA)
9638
: Mechanical seal air bleed
9647
: Check-valve assembly (JRLA)
9902A : Lantern casing/bearing attachment screw
9910
: Coupling/motor shaft attachment screw
9906
: Motor attachment screw
9923
: Motor attachment nut
9940
: Mechanical seal thrust ring
9941
: Washer for motor attachment
(recommended spares in bold type):
These are recommendations only, since the frequency of replace-
ment will depend on the conditions of use of the unit:
- for the mechanical seal, the quality, temperature, and pressure of
the pumped liquid;
- for the motor and the other components, the load and the
ambient temperature.
4.2 Motor
For use of a motor, not supplied, with standard IM B5 or IM V1 flange
(CEI standards) or C-Face flange (NEMA standards).
Speed of rotation in rpm, 50-Hz version
: 2900 or 1450
Speed of rotation in rpm, 60-Hz version
: 3500 or 1750
Winding
: depends on motor
Frequency
: 50 Hz & 60 Hz
Insulation class
: depends on motor
Protection index
: depends on motor
4.3 Possible accessories and options
- 439 DS motor protection circuit-breakers (LRLA)
- Y1200 motor protection and control box (JRLA)
- PN 10 round weld-on counter-flange
- Anti-vibration sleeve
- Isolating valve
- Pressure kit
- Blanking cover
- Baseplate for ND 65 and 80.
Sealing:
By maintenance-free self-lubricating mechanical seal with friction
faces:
- carbon/silicon carbide/EP seal
5. INSTALLATION
Install the pump in an easy-to-reach location.
If the motor is heavy (lifting tackle required), provide a point of
attachment (rail or lifting hook) in the centreline to make it easy to lift
the motor clear.
The pump may be connected directly to the piping or (better) instal-
led on a foundation block with proper sound and vibration damping.
5.1 Direct mounting on pipe (see Fig. 1)
May be installed in any position except blower cover down.
5.2 Installation on foundation block
The size of the block should be appropriate to the weight and dimen-
sions of the pump.
If the installation includes several pumps, they may be installed on the
same foundation provided that proper sound and vibration damping
practice is followed.
ATTENTION !
MECHANICAL SEAL
ENGLISH
