Speed Adjustment - Vortex HK 5-M 180 DN 32 Installationsanleitung Und Wartung

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. 
It is dangerous to unscrew the cap quickly; the fluid in the system is at a high temperature
8.5
and high pressure and can cause burns.
Protect the electrical components during bleeding operations.

SPEED ADJUSTMENT

9.
9.1 For single-phase circulators the speed is adjusted by turning the knob of the threeposition 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 circulators ZHK, refer to the figure  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 ZHK it is possible to set 3 speeds, while at 230 V it is
possible to set 2.
Speed indications:
V1 400 V
V1 230 V
9.5 If a lower speed is selected, considerable energy saving may be obtained and less noise.
ENGLISH
V2 400 V
V2 230 V
53
V3 400 V