OLIJU CMH Mode D'emploi page 2

ENGLISH
1. GENERAL WARNINGS
- Read this manual carefully before
installing this pump. It contains every
necessary information for installation,
correct use and maintenance of MH
pumps.
- It's very important that the user reads
this manual before using the pump. Any
damage caused by failure to observe the
directions contained in this manual will
not be covered by warranty.
- By the time you receive this
pump check if it wasn´t damaged
during transportation.
- In this case, please contact our
agent as soon as possible.
2. OPERATING CONDITIONS:
- The MH are centrifugal multi-stage
pumps and have been designed to
work with clean water at a maximum
temperature of 40º C.
3. INSTALLATION:
- The pump should be fixed to a solid
base by bolts through the holes in the
pump bracket in order to prevent
unwanted noise or vibration.
- You should place pump as
near as possible to water level
so to have the minimum suction
lift and reduce loss of head.
- Make sure that pump is never
submerged and that it rests in a dry and
well aired room.
4. PIPES ASSEMBLY:
- Suction pipe (Pic. 1) must have a
slightly larger diameter than the pump
inlet and must always remain in an
upward inclination of 2% so to help
with correct priming.
ENGLISH
9.FAULT FINDING CHART
Before attempting to diagnose any fault, make sure that the
electricity supply has been switched off.
FAULT
Pump does not start.
Pump runs but gives no
water.
Pump runs at reduced
capacity.
P u m p s t o p s d u r i n g
operation.
If in spite of carring out the above operations the problem still persists contact the
nearest service centre.
- A foot valve with filter should be
installed and submerged to at least 30
cm below the well dynamic level to
prevent air from entering the pump.
- Be sure that discharge pipe (Pic. 1)
should never rest on top of the pump.
DELIVERY
SUCTION PIPE
5. ELECTRICAL CONNECTION:
- The single-phase motors have a built-in
thermal protection.
- The electrical installation must have a
system of multiple separations with
contact opening of at least 3 mm.
- The protection of the system will be
based on a differential swith ( I fn = 30 ma).
- The electric cable must correspond to
the EEC (2) norm or to the type H07 RN-F.
- With three-phase motors, end-user must
install himself the correct protection to the
pump as per the aproppiate installation
regulations.
M
1 ~
Pic. 2
SINGLE PHASE
SUPPLY N L
CAUSE
- Supply failure.
- Control circuit has cut out or is
defective.
- Motor is defective.
- Pump is blocked by impurities.
- Pump is not filled with liquid.
- Suction or discharge pipe is blocked
by impurities.
- Pump is blocked by impurities.
- Suction lift is too great.
- Leakage in suction pipe.
- Foot or non-return valve is blocked.
- Wrong direction of rotation (three-
phase).
- Suction lift is too great.
- Suction or discharge pipe is blocked.
- Pump is blocked by impurities.
- Foot or non-return valve is partly
blocked.
- Thermal overload switch in motor or
external motor protection cuts out.
- Control circuit has cut out.
- Follow directions on Pic. 3. for a
correct electrical connection.
THREE PHASE SUPPLY
Pic. 1
6. CONTROLS PRIOR TO THE
INITIAL STARTING:
- Check that voltage and frequency
correspond to those indicated on the
technical characteristics label.
- Make sure the motor shaft is turning
freely.
- Fill pump body completely with water,
as well as the suction pipe, through the
priming hole (Pic. 4). Check that there is
no leaking through joints or connections.
- Check to assure that the sense of
rotation of the motor coincides with that
indicated on the fan cover. If you are
checking threephase motor and the sense
of rotation is wrong, invert two phases on
the protection board.
THIS PUMP SHOULD NEVER BE
DRY OPERATED.
7. STARTING
- Open all gate valves installed in the
suction and discharge circuits.
The products , referred to in this statement are in
accordance with Directive 73/23/EEC (the Low
Voltage Directive). Full compliance with
essential requirements of the Directive is
verified for compliance with standard EN
60335-2-41.
Les produits, visés dans la présente déclaration
sont conformes à la directive 73/23/CEE (la
Directive Basse Tension). Plein respect des
exigences essentielles de la directive est vérifié
pour la conformité à la norme EN 60335-2-41.
ENGLISH
- Check absorbed current and adjust
thermal relay conveniently only when
operating with three-phase pumps.
- If motor failed to start or did not pump
water up, refer to our "Trouble Shooting"
list and identify your problem. Then
400V
follow instruction on what action to take.
8. MAINTENANCE
- Our pumps do not need any special or
230V
programmed maintenance.
Pump body should , however , be drained
during periods of low temperatures or
Pic. 3
long periods of inactivity. To empty
pump, only remove drain plug (Pic. 5). If
the inactivity persisted, pump should be
cleaned and stored in a dry aired room
PRIMING HOLE
DRAIN PLUG
(Gerencia)
Pic. 4
Pic. 5