RHOSS H57603 Instrucciones De Uso página 47

If the unit is s et in W inter mode (HEATING is s et i n the mas k) the
followi ng mas k is displ ayed:
08:00 28/07/08
In water C. 35.0°C
Out water C. 40.0°C
U1 (1) ON (2)
(1) Master or Slave p aram eter s display
U1 Master board display ( unit 1 compressor)
U2 Slave 1 board display (unit 2 c ompressor)
U3 Slave 2 board display (unit 3 c ompressors)
(2) Unit status
ON On
OFF BY KEYB. ON/OFF from key
OFF BY AL AMB Off from alarm
OFF BY D.I. Off from remote ON/OFF (SCR)
(3) Operation modes
CH Summer (production of evapor ator c ooled water)
HP Winter (pr oduc tion of c ondenser hot water)
IMPORTANT !
The date and time are only displayed if the clo ck
board is pr esent (KSC).
I.7.7 Setting the Summer set-point
Inexpert users are not allowed to modify the Summer set-point values
within deter mined limits.
Example: If the Summer s et-poi nt is to be c hanged, operate as
described below:
Select the s_Setpoint string from the mai n
menu fr om the initial mas k
Actual setpoint
07.0°C
Press the DOW N key s everal ti mes until the
followi ng screen is displayed
Summer
set-point 07.0°C
By pressing the MODE/ENTER key, the
cursor will move bel ow the current value set
Summer
set-point 07.0°C
Use UP/DOW N to modify the parameter to
the desired value (for exampl e 11°C)
Summer
set-point 11.0°C
Confirm the new value pressi ng
MODE/ENTER
Exit the SET using the ON/OFF key
IMPORTANT !
When modifying or var ying the machine's operating
paramet ers, make sure that you do not create
situations that conflict with the other set
paramet ers.
Cond. input water temp.
Cond. output water temp.
HP (3)
)
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I.7.8 Display MASTER or SLAVE parameters
Select u _Unit chang e. from the main menu.
Pressing the MODE/ENTER key, access the mas k us ed to c hange the
MASTER board parameters dis play (U: 01) or that of the SLAVE board
(U: 02 / U: 03).
MODE
By pressing ENTER and then the UP/DOWN keys , it is possible to
modify the unit address.
I.7.9 Prolonged shutdow n
During long mac hine standstill periods, the unit must be elec trically
isolated by acting on the automatic master s witch (IG) positi oned to
protect the entire plant.
All the water c ontained in the circuit must be drai ned in good ti me.
During installation, consider mi xing the water in the circuit with the
correct proportion of ethylene gl ycol to guarantee protec tion against
freezing (see SECTION II: INST ALLATION AND MAINTENANCE).
I.7.10 Start-up after prolonged shutdow n
MODE
At leas t 8 h before starting the unit, apply voltage by cl osing the
auxiliary switc h inside the electric control board (protect the auxiliaries
controlled by the voltage V 230-1-50) and by acti ng on the master
switch i n order to power the el ectric resistances for heati ng the oil in the
compressors guards (the resistances are disconnected automatic ally at
ever y machi ne start-up).
Before starting the unit, p erform the follo wing checks:
MODE
• the power s upply voltage must c orrespond with that requested,
stated on the machine pl ate, with variations within ±10%. T he
unbalanci ng of the phase voltages must be c ontained withi n 3% ;
• the electrical power s uppl y s ys tem must be able to suppl y adequate
ON
OFF
current and be suitabl y sized to handle the load;
•
•
•
47
MASTER board parameters dis play (U:01)
Unit: 1 MASTER unit
Unit: 2 SLAVE 1 unit
Unit: 3 SLAVE 2 unit
IMPORTANT !
If the unit is not used during the winter period, the
water contained in the system may freez e.
IMPORTANT
Machine start-up must only b e performed b y
qualified staff in Compan y authorised wo rkshop s,
enabled to operate on this t ype of product.
DANGER !
Always act on the automatic master switch (IG)
positioned to protect the entir e plant before an y
maintenance oper ation, also if only an inspection.
Make sure that no one accid entally supplies po wer
to the machine, lock the automatic m aster switch
(IG) in the zero position.
SECTION I: USER