Davey SS30-25 CIRCULATION PUMP - Manual (Page 3)

5.2 Orientation of terminal box (see
FIG. 4)
If necessary, the orientation of the motor,
and with it that of the terminal box, can be
changed.
- Remove the motor attachment screws
and turn the motor to the desired
position.
Take care not to damage the
casing gasket, and reinstall it
correctly.
The terminal box should not be
placed at 3 and 6 o’clock on an
cold water circuit.
5.3 Electrical connection
The electrical connect must be
made by a qualified electrician
and comply with applicable local
standards.
Complete electrical information about the
circulator is given on the data plate.
Power supply network
Use a three-conductor cable (3 x
1.5mm 2 ) to connect mains power to the
corresponding terminals of the circulator;
phase (L), neutral (N), and earth ( ) (see
FIG. 5).
The power cable must not touch
the pipe or the pump; make sure
that it is away from any moisture.
Check line protection and the mains
voltage and frequency. The circulator
must be connected to the mains via a
switch with an opening distance, on
each pole, of at least 3mm. The motors
of the circulator models SC & SB are
self protected by impedance, therefore
they don’t need external protection. The
motors of the circulators SS need a
contactor with overload fitted. The power
outlet must have an earthing contact.
After making the connections, put the
cover back on the terminal box.
6. STARTING UP
6.1 Filling, degassing
Never operate the circulator
WITHOUT WATER
- Open the valves on both sides of
the circulator and fill the installation
completely.
- Bleed the circuit at the high point.
- Bleed air from the circuit, by hand, by
unscrewing the plug (see FIG. 6) a few
turns; close it when water runs out and
when there are no more air bubbles.
Risks of scald. Use a
screwdriver for unscrewing
the tap.
- Power up the motor to start the
circulator.
- The flow rate is adjusted by changing
the speed of rotation of the motor using
the selector switch.
Risk of burning. In
operation, the motor casing
may be hotter than 100 o C.
7. SERVICING
The circulator needs no special servicing
in operation. The motor bearings are
lubricated by the liquid pumped.
At the beginning of each heating season,
or after a prolonged shutdown, make sure
that the circulator turns freely.
8. OPERATING TROUBLE
Causes and remedies
Switch the circulator OFF
before doing any work on
it.
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