Manuale d’uso / di manutenzione del prodotto RAC2-8 del fabbricante Liebert
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TABLE OF C ONTENTS SECTION 1: INTRODUCTION ......................................................................................................... 1 SECTION 2: ST ART UP ...............................................................................
TABLE OF F IG URES Figure i. Typical Sys t em C onfig uration ......................................................................................... .................iii Figu re 2–1. Local Con trol Panel ..........................................
Liebert RAC2-8 • iii Figure i. Typical System Configuratio n RAC2-8 N.O. Pow er Source 120 VA C Control Input Com mon Ala rm Output UNIT 1 Control Input Com mon Ala rm Output UNIT 2 Control Input Com mon Ala rm Output UNIT 8 Aux Pw r Out 24 VA C, 2A Term inal Port Mod e m Port SiteScan N.
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Liebert RAC2-8 • 1 Section 1: Introduction The Liebert RAC2-8 rem otely controls from tw o to eight environm ental units. Each u nit is assigned to a Zone (room ) from 1 to 4. In Zone 1, the largest room , the tem perature and h um idity can be monitored.
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Section 2: Start Up To start up the RAC2-8: 1. Mount unit to w all. 2. Connect cables. 3. Set switch es and jumpers on circuit boards as required for you r application. Refer to instructions and illustrations in SECTION 5 — INSTALLATION . 4. Make user prog ram mable s elections from the local con trol panel or from an optional remote termin al.
4 • User Manual (9/97).
Section 3: Operation This chapter describes how to use the RAC2-8. Local The following screen s are displayed at the LCD display built into the RAC2-8 unit con trol panel. Refer to SECTION 4 — GLOSSARY OF CO NTROL FUNCTIONS for m ore details. Sequencin g Status Screens With pow er ON, the follow ing status s creens are display ed in sequ ence.
Section 3: Operation Sequenci ng Status Screen s (cont’d.) AUTO SEQUENCING ON DAY 06 OF 15 <00:00> TEMP STAGING OFF Each screen is autom atically dis played for 3 s econds. To control the display of the statu s screens , you can press the Hold /Seq uence b utton t o hold a scr een and to manuall y step thro ugh the screens.
Section 3: Operation STATUS MENU 1. UNITS 2. T/H 3. A-DELAY 4. R-DELAY 5. H-DELAY 6. RETURN 1. UNITS From the Status Sub-m enu, press 1. UNIT S to display the Unit Status menu: UNIT STATUS 01-R 02-S 03-R 04-S 05-R 06-S 07-R 08-S A=ALM S=STBY R=RUN 2. T/H From the St atus S ub-m enu , press 2.
Section 3: Operation Status Sub-m enu (cont’d ) The Alarm Delays screen indicates th e time in seconds of an active delay on each u nit. Active alarm delay s count up w hile th e condition is present and count dow n if the condition is cleared before the A larm Delay tim e elapses.
Section 3: Operation From the Set Un its menu , select 1. ZONES/UNITS to select the number of zones , num ber of u nits in each zone, and operatin g statu s of each unit.
Section 3: Operation From the Set Units m enu , press 4. SHUTDOWN to d isplay the Shutdo wn on Alarm screen: SHUTDOWN ON ALARM 01-Y 02-Y 03-Y 04-Y 05-Y 06-Y 07-Y 08-Y 1=YES O=NO E=NEXT Beginning with unit 01, indicate 1 (Yes) or 0 (No) if the u nit should shut do wn on alarm.
Section 3: Operation From the Set Delay s m enu, press 3. UNIT REST ART to configure th e restart delay: ENTER RESTART DELAY <00.1> XX.X MINUTES THEN PUSH ENTER PUSH CLEAR TO RETURN Enter the desired time f or the restart delay. The default is 0.
Section 3: Operation 1. F 2. C 5. RETURN From the T/H men u, press 4. LOCK to configure the optional Humidity Lockout f eature: HUMIDITY LOCKOUT SET HI>00 LOW>00 (RANGE 20-80) 00=OFF E=NEXT C=RETURN Refer to SECTION 4 — GLOSSARY OF CONTROL FUNCTIONS for details on the Hum idity L ockout feature.
Section 3: Operation Press 1. NEW PASSWORD to set a new four-digit passw ord for the system , then f ollow the instru ction on the screens: ENTER NEW PASSWORD > THEN PUSH ENTER PUSH CLEAR TO RETURN Enter “ 0000” to disabl e the Pas sw ord fu nction .
Section 3: Operation Set Clock Sub- menu From the Main Men u, press 4. SET CLOCK to display the Set Clock Sub-menu: SET CLOCK MENU 1. DATE 2. TIME 3. DAY OF WEEK 4.
Section 3: Operation The Override function lets y ou m anually force a unit ON or OFF, or to restore a forced un it to the norm al control of the RA C2-8 sy stem . The Overr ide functio n acts immedia tely, igno ring the Hold Delay. An override message w ith tim e stam p is entered in the A larm m em ory buffer.
Section 3: Operation Terminal A local te rmin al can be con nected directl y by an EIA -232 comm un ication cable to the R AC2-8, or a rem ote term inal can be conne cted through mod ems. All of t he status i nformatio n and c ontr ol function s available at the R AC2- 8 local display are available f rom th e termin al.
Section 3: Operation Status Screen The Status screen i s display ed by pressi ng th e <S> key (n o passw ord required) or by pressin g th e <1> key from the Mai n Menu . RAC2-8 STATUS - 07-16-96 09:22:13 Temperature = 70.6 ° F Humidity = --% Modem = OFF UNIT LABEL ZONE EMRG.
Section 3: Operation Setup Zones/Units Options Press 2 from the Main Menu to display th e Set Options menu . The followin g screens show the term inal display that en ables you to configur e the O ptio ns menu items. NUMB ER OF Z ONES/NUMBER OF UNITS PER ZONE RAC2-8 MAIN MENU SET OPTIONS MENU 1.
Section 3: Operation 2 02 1 RUNNING 3 03 1 RUNNING 4 04 1 STANDBY 5 05 2 RUNNING 6 06 2 STANDBY 7 07 0 UNPROGRAMMED 8 08 0 UNPROGRAMMED PRESS UNIT (1-8) KEY <ESC TO QUIT> 3 PRESS A KEY (R=RUN or.
Section 3: Operation 8 08 0 NO PRESS UNIT (1-8) KEY <ESC TO QUIT> 1 20 • User Manual (9/97).
Section 3: Operation Unit Labels The RAC2-8 will accept any 2 digit label if you prefer som ething other than 01 thro ugh 08 . SET OPTIONS MENU ** SET UNIT LABEL ** UNIT LABEL ------------- 1 01 2 02 .
Section 3: Operation Override A Unit Press 6 from the Main Menu to display the Override a Unit screen . A unit can be Forced ON, Fo rced OFF, or Re stored to autom atic control.
Section 3: Operation Set Modem Options Press 7 from the Main Menu to display the Set Modem Options screen . RAC2-8 MAIN MENU ** SET MODEM OPTIONS ** 1. Phone Number = 2. Site ID = 3. Dial Prefix = ATE1X4DT 4. Redial Interval (minutes) = 01 5. Redial Tries (--- = Forever) = 03 6.
Section 3: Operation Set Modem Options (cont’d) Hang up on DTR on-off transition Model 1200: S W1 up and S W10 down Model 2400: & D3 Track status of carrier detect Model 1200: S W6 up Model 2400.
Section 3: Operation Setup Standb y Unit Options Press 9 from the Main Menu to display th e Set Standby Unit Options screen: RAC2-8 MAIN MENU ** SET STANDBY UNIT OPTIONS ** 1.
Section 3: Operation Display S S Alarm Bl ock This display is usefu l to a Liebert C ustom er Engi neer for sy stem diagno stics. Set Ne w Pass word Press P from the Main Menu to conf igure a passw ord for terminal operation.
Section 4: Glossary of Control Functions The follow ing term s are u sed to desc ribe th e control an d operation of the Liebert R AC2- 8. For each term, both the operator actions an d the sy stem perform ance are defin ed.
Sect ion 4: Glossary of Contr ol Funct ions Alarm Annuncia tion The RAC2-8 p rovi des the follo wing alarm annunci atio n mechanisms: • Audible in dication (horn). • A lighted ‘Alarm s Present’ front panel in dicator. • Activation of the Com mon A larm relay output.
Section 4: Glossary of Control Functions unit is tur ned O N. Dur ing the Ho ld D elay no a larms are annuncia ted from the started un it or any un it in the sy stem. If the Sta ndby unit has a n alarm, the Runni ng unit is re starte d if DIP switch 1-8 is O N.
Sect ion 4: Glossary of Contr ol Funct ions If a zone in cludes m ore than 1 Standby un it, the sam e actions occu r. At the end of each Interv al, one un it is started and on e is stopped. F or exam ple, if tw o Standby units are used, the First is started after th e First Inter val.
Section 4: Glossary of Control Functions Delay Refer to Alarm Delay , Hold Delay, and Restart Delay. E key The Enter key <E> at th e local control panel serves tw o functions: • Causes data entered in setup display pages to be sto red in the RAC2-8 pe rmanent memory.
Sect ion 4: Glossary of Contr ol Funct ions Hu mid it y A l ar ms Hum idity alarm s are cau sed w hen th e hum idity detected by the rem ote sensor in Zone 1 ex ceeds the prog ramm ed High or Low trip-poin t. Trip- points are selected in 1% RH increm ents from the display .
Section 4: Glossary of Control Functions Normal Temperature Refer to Temperatu re Staging. Override The RAC2-8 allows m anual control of units f rom the display and also from sw itches in side the enclosure. To manually turn all u nits ON refer to Manual Override.
Sect ion 4: Glossary of Contr ol Funct ions Restart Delay The length of time betw een a request to turn ON a unit and w h en the unit is actually turned ON. A lso the length of time betw een the start of each succes sive u nit after pow er is applied or res tored.
Section 4: Glossary of Control Functions Running status. Standb y units can be t urned O N by Autochange over, Aut osequen cing, or Standby Testin g. Temperature Alarms Temperature alarm s are caused w h en the tem perature detected by the remote s ensor in Z one 1 exceeds the program m ed High or L ow trip- point.
Sect ion 4: Glossary of Contr ol Funct ions Zones Each area (room ) controlled by the RA C2-8 is called a Zone. Z ones are numbered 1 thr ough 4 . Zone 1 should be t he lar gest or most impor tant room, it is the only Zone th at can be monitored by a Temp/Hum sen sor, and the only Z one that can be con trolled by Tem perature Staging .
Liebert RAC2-8 • 37 Section 5: Installation Select a location for the RAC2-8 that is conv enient for both operation and cable routing. If th e application at your installation is critical, the location shou ld also provide lim ited access to the controller.
Section 5: Installatio n 3. Using w ire cu tters, carefully sn ip and rem ove the C5 capacitor at the K5 com mon alarm on the interf ace board. Refer to the diag ram below for the location of th e C5 capacitor.
Section 5: Installatio n Dwg No. 154538 Issued: 7/31/97 Figur e 5–1. RAC2-8 Dim ensiona l Enclosure Diag ram Liebert RAC2-8 • 39.
Section 5: Installatio n Dwg No. 154539 Issued: 7/31/97 Figur e 5–2. RAC2-8 Comp onent Arra ngem ent 40 • User Manual (9/97).
Section 5: Installatio n Dwg No. 154540 Issued: 7/31/97 Figur e 5–3. RAC2-8 Co nnection Dia gram Liebert RAC2-8 • 41.
Section 5: Installatio n Dwg No. 154541 Issued: 7/31/97 Figur e 5–4. RAC2-8 Switch a nd Jum per Settings 42 • User Manual (9/97).
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Liebert RAC2-8 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Liebert RAC2-8 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Liebert RAC2-8 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Liebert RAC2-8 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Liebert RAC2-8, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Liebert RAC2-8.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Liebert RAC2-8. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Liebert RAC2-8 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
