Liebert Challenger Plus CP20A U Technical Data Manual page 11

Stan dard fea tures - all sys tems (con tin ued)
Fil tra tion
The air fil ter is made of syn thetic fi ber cells in a card board
frame and is de signed to mini mise the air pres sure drop while
main tain ing maxi mum fil ter ef fi ciency. It is eas ily
ac cessed/re placed by open ing the front doors of the unit.
The guar an teed ef fi ciency is EU4 (Eu rov ent EU4/5, 30%
ef fi ciency), (G4, CEN stan dard). Optional fil tra tion lev els to
EU8 (G8) are avail able on re quest.
Pre fil ters are avail able on up flow mod els.
Electrical panel
The elec tric panel, lo cated at the front of the unit in an air tight
compartment, con tains the MCB's, con tac tors, trans former,
con trol ler PCB and over load re lays etc. Each high volt age
sys tem com po nent is pro vided with a sepa rate over cur rent
pro tec tive de vice. All high- voltage com po nents are touch
pro tected by means of a plas tic cover. The elec tric panel
com plies with the EN 60204-1.
All units are de signed for op era tion at 400V/3ph/50 Hz ( +
10%) and are fit ted with a mains dis con nect switch.
Microprocessor controller -
Microface
T h e M i c r o f a c e e n v i r o n m e n t a l c o n t r o l s y s t e m is
mi cro proc es sor based and can be pro grammed to match the
unique needs of any ap pli ca tion. The proc es sor in te grates the
sepa rate me chani cal and elec tri cal com po nents into a
'state -of -the -art' con di tioned space sup port sys tem that
con trols and moni tors tem pera ture, hu mid ity, air flow and air
clean li ness.
The con trol sys tem of fers a tai lored and well proven ad vance
in re li abil ity and con trol flexi bil ity al low ing the unit to
mod ify its per form ance in re sponse to chang ing criti cal space
con di tions.
The con trol ler al lows lo cal moni tor ing and pro gram ming of
the fol low ing room con di tions:
o
Tem pera ture ( C)
Tem pera ture set point (5.0
Tem pera ture sen si tiv ity (1.0
Hu mid ity (%RH)
Hu mid ity set point (20%RH - 80%RH in steps of 1%)
Hu mid ity sen si tiv ity (5%RH - 20%RH in steps of 1%)
The pa rame ters are enun ci ated us ing sym bols and text on an
LCD dis play. Nor mal op er at ing modes are in di cated by
sym bols on the dis play. Alarm con di tions ac ti vate a vis ual
in di ca tor.
SLE CP TDM E.1 (06/99)
o o
C – 40.0 C in steps of 0.1
o o
C - 10 C in steps of 0.1
The fol low ing alarms are stan dard:
• High temperature
• Low temperature
• Fan failure
• High pressure alarm – (compressorised systems only)
• Low pressure alarm - (compressorised systems only)
• Electrical reheat high temperature
• Memory failure
• Common alarm
Other alarms are also avail able when the rele vant op tion is
or dered with the unit (e.g. if a hu midi fier is or dered with the
unit, the High Hu mid ity, Low Hu mid ity etc. alarms are
en abled). For a full list of all the op tions and alarms avail able
with the Mi cro face con trol ler, re fer to the Mi cro face
Con trol ler Op era tion Man ual (P/N SLE MF OM).
The con trol ler also in cor po rates a se quen tial auto- restart
timer, al low ing field ad just able time de lays to be ap plied to
unit re start af ter a power loss (or other shut down). The tim ers
al low mul ti ple units to be re started while lim it ing
in stan ta ne ous in rush cur rent.
o
C)
o
C)
Challenger Plus - Technical Data Manual
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