Starting Up; Speed Adjustment - DAB BMH Serie Instrucciones Para La Instalación Y El Mantenimiento

8.

STARTING UP

8.1 After installation and after having checked the direction of rotation, fill and bleed the
system before running the circulator. (fig.1)
Avoid running the circulator when there is no water in the system.
8.2 As well as being at high temperature and high pressure, the fluid in the system may
also be in the form of steam. DANGER OF BURNING.
8.3
It is dangerous to touch the circulator. DANGER OF BURNING.
8.4 If it is necessary to bleed air from the motor, slowly slacken the breather cap and let
the fluid flow out for a few seconds. (fig.1)
8.5
It is dangerous to unscrew the cap quickly; the fluid in the system is at a high
temperature and high pressure and can cause burns.
Protect the electrical components during bleeding operations.
9.

SPEED ADJUSTMENT

9.1
For single-phase circulators the speed is adjusted by turning the knob of the three-
position switch and it may be done when the motor is live.
The operations for changing the speed of three-phase circulators must
be carried out when the power supply is disconnected.
9.2 To set the speed of three-phase community circulators, refer to the figure on page 3
and perform the following operations:
1. Ensure that the circulator is not receiving power from the mains.
2. Remove the terminal board cover.
3. Slip out the speed selector module and replace it so that the number
corresponding to the speed and the required voltage value are visible through the
window of the terminal board.
ATTENTION: To change over from setting speed at 400 V to setting speed at
230V, it is necessary to slip out the selector module, remove the spacer, turn it
upside down and position it so that, after replacing the module, the speeds for 230
V power supply are visible in the window of the terminal board.
TAKE CARE not to position the module so that the danger warning is visible in the
window.
4. Put the cover back on the terminal board.
5. Reconnect the electric power supply.
9.3
The speeds for voltages 230 V and 400 V must be associated respectively with
the mains voltage.
9.4
For 400 V three-phase community circulators it is possible to set 3 speeds, while at
230 V it is possible to set 2.
Speed indications:
V1 400 V
V1 230
ENGLISH
V2 400 V
V2 230 V
22
V3 400 V