Benutzeranleitung / Produktwartung 040-420 des Produzenten Carrier
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G Y 040-420 Contrc with h _.- - v----w I CONTENTS Page SAFETY CONSIDERATIONS . . . + . . . . , e +. . , . . , . 1 GENERAL . . . . . . , . . . . , . , . . . , . , . . . . , . , . . . . . . . . 2 MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . 2-4 Processor Module .
-%a- GENERAL IMPORTANT: This publication contains controls, op- eration and troubleshooting data for 3OGNO40-420 and 30GT225, 250, and 280 FlotronicTM II chillers, Circuits are identified as circuits A and B, and com- pressors are identified as Al, A2, etc.
- -.-...- KEYPAD;DISPLAY GROUND FAULT INTERRUPTER MODULE (HSIO/LID) 208/230-, 460-f%!-3-60-V ONLY LEGEND CCN - c Zarrier Comfort Network TB -1 “erminal Block ELECTRONIC EXPANSION VALVES DRIVER MODUL.
In the LOCAL/ENABLE position, the chiller is under lo- cal control and responds to the scheduling configuration and set point data input at its own local interface device (key- pad and display module). In the CCN position, the chiller is under remote control and responds only to CCN network commands.
OPERATION DATA Capacity Control - The control system cycles compressor to give capacity control steps as shown in Tables 4A-4D. The unit controls leaving chilled water tem- perature. Entering water temperature is used by the micro- processor in determining the optimum time to add or sub- tract steps of capacity, but is not a control set point.
Table 4A - Capacity Control Steps, 040-070 (cant) I LOADING SEQUENCE A LOADING SEQUENCE B UNIT 30GN I . . . a 1 I 18 ?I 56 73 050 (50 Hz) 060G Hz) Y 1:; 1 28 050 (50 Hz) “g pgy I 050 (50 Hz) 060A~**Hz) 050 (50 Hz) 06g$,y I - - - - 6 - 1 15 060 (50 Hz) 070fc Hz) 060 (50 Hz) 07Odpto**Hz) 060 (50 Hz) oypg~) , *Unloaded compressor.
Table 4A - Capacity Control Steps, 040-070 (cant) T LOADING SEQUENCE A LOADING S % Displacement (Approx) i! ii: 83 WENCE B UNIT 30GN 1 _ . . i ;. 060 (50 Hz) % Displacement tApprod 16 2: :i 100 2 65 i; 100 Compressors Al’,61 100 “‘“G Hz) Al* A-FBI Al ,k Al l ,A2,Bl Al ,A2.
, Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units r UNIT 30GN I LOADING SEQUENCE A LOADING SEQUENCE B % Displacement (4wW z! :: iii 100 Compressors Compressors Al* Al Al*,Bl* Al *,Bi Al ,Bl Al *,A2,Bl Al .A2.B1 Bl* Bi Ai*,Bl* Al,Bl* Al ,Bl Al .
Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units (cant) UNIT CONTROL 30GN STEPS 090 (60 Hz) Aly*,Blt 090 (60 Hz) Alt**,BlY* *Unloaded compressor. tCompressor unloader, standard. **Compressor unloader, accessory TtTwo unloaders, both unloaded.
Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units (cant) r T UNIT 30GN LOADING LOADING SEQUENCE B CONTROL STEPS % Displacement (4wW 7 :;’ ii 43 Pii 60 7”: Ei 100 % Displacement (APPW Compressors Compressors - - - - Al*,BlTT,BZ “d;B~ltt~~2 A1’,Bl*k Al *,A2,Bitt,Bl Al ,A2,BlTt,Bl A.
Table 40 - Capacity Control Steps, 080-I IO and Associated Modular Units (cant) UNIT 30GN 100, 2406, 270B (60 Hz) Alr*,Blr 100, 240B, 2708 (50 Hz) A1tW-t Wtf2Z$’ Al ,kI2,i31 Altt,A2,Bl *,B2 Al tt,A2,Bl ,B2 Al *,A2,Bl ,B2 Al .
- Table 48 - Capacity Control Steps, 080-110 and Associated Modular Units (cant) UNIT 30GN 110 (60 Hz) Al t**,Bl Y 110 (50 Hz) Alt,Blt LOADING SEQUENCE A % Displacement (ApprW 14 ;A :: s6: 2 - - - - - - - - Compressors Al* &I * Al ‘,Bl Al ,Bi Al l ,A2,Bl* Al *,A2,Bi Al ,A2,Bl Al*,A2,Bl*,B2 Al *.
Table 4B - Capacity Control Steps, 080-110 and Associated Modular Units (cant) UNIT 30GN 110 (50 Hz) Alt**,Blt 110 (50 Hz) Alt,Blv 110 (50 Hz) z Alt**,Blt** i 9 :: 12 CONTROL STEPS : LOADING % Displac.
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units UNIT 30GN 130, 240A, 130, 240A, 130, 240A, 130, 240A, 130,24OA, T- LOADING % Displacement Mvrox) :‘: :fz 2; ;i Ei 100 - - - - - - - - - - - - - - EQUENCE A Compressors Al* Al% * Al ‘,Bl Al ,Bl Al *,A2,Bl* Al *,A2,Bl Al ,A2,Bl Al *,A2,Bi *,B2 Al*,A2,Bl ,B2 Al .
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant) UNIT 30GN 130, 24OA, 130,24OA, 130, 240A, CONTROL STEPS r LOADING SEQUENCE A % Displacement hwrox) 6 - - - - - - - Compre.
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant) r EQUENCE A LOADING % Displacement (Apwxl 6 :: :“; zi 49 53 ii i: ii: 95 100 LOADING % Displacement UQwrox) EQUENCE 8 C.
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant) SEQUENCE B LOADING SEQUENCE A UNIT SIZE % Displacement (4wrox) Compressors Compressors - Bitt - Bl-*. “A;“B’:t;3”2’ Al’,Bl*‘BP Al ,A2,Bl’tt,B2 Al ,A2,Bl *,B2 Al ,A2,Bl ,B2 Al ,A2,A3,Bltt,B2 Al ,A2,A3,Bl*,B2 Al ,A2,A3,Bl ,B2 “B’.
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant) UNIT SIZE 170, 270A,300B, 170,27OA, 300B, 170,27OA, 300B, 33oA/,$cH350 Hz) 9 LOADING SEQUENCE A % Displacement (Aiwrox) -.
Table 4C - Capacity Control Steps, 130210 and Associated Modular Units (cant) UNIT CONTROL SIZE STEPS 170, 270A, 300B, 33OA/z, t”fB,:“O Hz) I 170, 270A, 3008, 33OA/z, t”609+{,50 Hz) , 170,27OA, .
- Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant) l- r SEQUENCE B Compressors LOADIN< % Displacement OVvW 2 41 56 1;: UNIT SIZE CKEL Compressors Ah Al j2,B-i Al ,A2,B.
Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant) r l- LOADING SEQUENCE A i SEQUENCE B Compressors LOAD11 % Displacement PWprox) 11 :; ii 50 61 7; a3 94 UNIT SIZE CONTROL .
r- A Table 4C - Capacity Control Steps, 130-210 and Associated Modular Units (cant) f LOAD11 LOADING SEQUENCE B i SEQUENCE A Compressors UNIT SIZE % Displacement (Approx) 9 i; Compressors Bl* Al% * Al .
Table 4D - Capacity Control Steps, 225, 250,280 UNIT 30GT 225 (60 Hz) 225 (50 Hz) r LOAC % Displacement (Awox) 12 2 46 E 1:; IG SEQUENCE A Compressors *1A’B1 Al ,A2,61 Al ,A2,Bl ,B2 Al ,A2,A3,Bl ,B2 Al ,A2,A3,Bf ,B2,B3 Al ,A2,A3,A4,Bl ,B2,B3 Al.A2.A3.
UNIT 30GT 250 (60 Hz) *Unloaded compressor. JCompressor un!oader, standard **Compressor unloader, accessory ttTwo unloaders, both unloaded. NOTE: These capacity control steps may vary due to lag compressor sequencing.
Table 4D - Capacity Control Steps, 225, 250, 280 (cant) UNIT 30GT 250 (50 Hz) 280 (60 Hz) 250 f& Hz), Al** 250 $;; Hz), Al**,Bl** CONTROL STEPS 1G SEQUENCE A Compressors Al Al ,A2,61 Al ,A2,Bl ,B2.
Head Pressure Control - The microprocessor con- trols the condenser fans in order to maintain the lowest con- densing temperature possible, thus the highest unit efficiency. Instead of using the conventional head pressure control meth- ods, the fans are controlled by the position of the EXV and suction superheat.
Table 5 - Condenser Fan Sequence (cant) FAN ARRANGEMENT FAN NUMBER(S) FAN C~;;jACToR CONTROLLED BY 30GT225 30GT250 (60 Hz) 7, 8 FC-1 Compressor Al 9, 10 FC-4 Compressor 61 5, 6 FC-2 First Stage 11, 12.
Keypad and Display Module (Also Called HSIO or LID) - The only function of this module is to allow the operator to communicate with the processor. It is used to enter configurations and set points and to read data, per- form tests, and set schedules.
Table 7 - Functions and Subfunctions FUNCTIONS su6FUNFT’oN Status Test Schedule Service History Set Point 0 STAT cl TEST ICI CHD cl SRVC 0 HIST cl SET 1 Automatic outputs Override Log On and Run Tim.
Table 9 - Keypad Directory STATUS 2 ALARMS I 3 MODES 4 STAGE 5 SET POINT 6 TEMPERATURE KEYPAD ENTRY DISPLAY 1 LEGEND CCN - Carrier Comfort Network EXV - Electronic Expansion Valve MOP - Maximum Operat.
Table 9 - Keypad Directory (cant) STATUS (cant) SUBFUNCTION I KEYPADENTRY 6 TEMPERATURE (cant) cl 4 q t cl 4 cl 4 0 4 7 PRESSURE 8 ANALOG 9 1NPUTS DISPLAY SCTB X SSTB X CTB X SHB X RST X* PRESSURE DPA.
Table 9 - Keypad Directory (cant) SUBFUNCTION 10 OUTPUTS STATUS (cant) DISPLAY OUTPUTS ALMR X FRAI X FRA2 X FRBI X FRB2 X CHWP X* ULAI X ULA2 X* ULBI X ULB2 X* EXVA X EXVB X HGBA X* HGBB X MMA X* MMB .
Table 9 - Keypad Directory (cant) TEST (cant) SUBFUNCTION KEYPAD ENTRY 2 COMPRESSORS AND UNLOADERS During compressor test, compressors start and run for 10 seconds. Compressor service valves and liquid line valves must be open. Energize crankcase heaters 24 hours prior to performing compressor tests.
Table 9 - Keypad Directory SCHEDULE (cant) DISPLAY PERIOD 1 OCC HH.MM UN0 HH.MM MON X TUE X WED x THU X FRl X SAT X SUN X HOL X To toggle between inputs (Yes/No) Press: Fi Fi COMMENT Period 1 Time Sch.
Table 9 - Keypad Directory (cant) SERVICE (cord) The next 3 subfunctions provide the ability to modify configurations Refer to separate Installation, Start-Up, and Service Instructions supplied with unit for further information on changing configurations.
Table 9 - Keypad Directory (cant) SUBFUNCTION 1 RUN TIME KEYPAD ENTRY DISPLAY COMMENT r;lm RUN TIME Run Time lnformation 0 + HR X Total Hrs Unit Has a Comp Operating cl 4 HRA X Circuit A Run Time cl b.
Table 10 - Operationat and Mode Display Codes The operating modes are displayed by name or code num- ber, to indicate the operating status of the unit at a given time.
Example 2 - Reading Current Operating Modes KEYPAD I DISPLAY ENTRY RESPONSE I COMMENTS TUE 15:45 Keypad has not been used for at LOCAL ON least 10 minutes Rotating summary COOL 1 display appears on sc.
Example 3 - Using Test Function KEYPAD DISPLAY I ENTRY RESPONSE COMMENTS cl + COMP CPA 1 OFF CPA 1 ON CPA 1 OFF CPA 2 OFF Factory/field test of compressors subfunction of test function Circuit A, Comp.
I. Maximum Reset Amount (CRST2) - allowable range 0” to 20” F (0” to 11” C). This is maximum amount leav- ing chilled water set point is to be increased. 2. Maximum Reset Reference (CREF2) - allowable range 0” to 20” F (0” to 11” C). This is the cooler temperature drop at which reset reaches its maximum value.
Temperature Reset Based on External Temperature - If de- sired, temperature reset can be based on an external tem- perature, such as space or outdoor-air temperature.
n POINT NUMBER OF FIRST CHANNEL Q EKE LIMIT (ALARM CODE 312 (MODE 91 4 nw/4 OUJJU PWR I --e-------1- -- __-----a ---mm- _------ __----. __---- --- ---se ___---c--- ---- - - - - - _ - - - - - - - - (MO.
16 8 6 0 02 4 68 IO 12 14 16 18 20 RESET REFERENCE SIGNAL (4 -20 MA INPUT) Fig. 7 - 4-20 mA Cooling Temperature Reset Example 7A - Using Demand Limit Example 7B - Using Demand Limit (4-20 mA) (First L.
MAX DEMAND KIMAX) = 90 DEMAND LlMlT SIGNAL (4-20 MA INPUT) Fig. 8 - 4-20 mA Demand Limiting Reading and Changing Time Displav - Time is entered Logging On/Longing Off - The service function is pass- and displayed in 24-hour time. The day of the week is en- word protected.
Table 12 - Factory Configuration Keystrokes To change a configuration enter the new configuration and press q while on the correct configuration. SUB- FUNCTION 3 FACTORY CFG 5 %FE DISPLAY COMMENTS FAC.
The schedule function can be programmed for inactive, single set point, or dual set point operation. When schedule is configured for inactive, chilled water pump relay remains energized continuously but is not used since chiller is usually controlled by remote chilled water pump interlock contacts.
Example 10 - Holiday Schedule Function Example 9 - Using the Schedule Function (cant) ENTER KEENYTPRAYD I DISPLAY COMMENT DISPLAY HOLIDAY JAN01 02 (Includes Jan Ist and 2nd) APR17 01 (Includes April 1.
TROUBLESHOOTING The FlotronicTY II control has many features to aid the technicians in troubleshooting a Flotronic II Chiller. By us- ing keypad and display module and status function, actual operating conditions of the chiller are displayed while unit is running.
Alarm Codes - Following is a detailed description of each alarm code error and possible cause. Manual reset of an alarm is accomplished by moving LOCAWENABLE- STOP-CCN Switch to STOP position, then back to LO- CAL or CCN position. See Table 14 for listing of each alarm code.
Possible causes of failure: 1. 3 d. 3. 4. 5. 6. High-Pressure Switch Open - High-pressure switch for each compressor is wired in series with 24-v power that energizes compressor control relay. If high-pressure switch opens during operation, compressor stops.
Code 30 Reset input failure (4 to 20 mA) Code 31 Demand limit input failure (4 to 20 mA) These codes apply only if unit is configured for these functions. If 4-20 mA signal is less than 4 or more than 20 mA, reset or demand limit function is disabled and unit functions normally.
Possible causes of fault are low refrigerant charge, plugged filter drier, or a faulty EXV or thermistor. Code 48 Low suction superheat, Circuit A Code 49 Low suction superheat, Circuit B If EXV is at minimum position, suction superheat is less than 10” F (5.
TE7 REO I 24VAC CONTROL 5CtlEliATIC CN5 TNANZ - 32MP w I IlEO2 21V SECONDARY 1 DGT DSIO HPS E! PWR GLN U LEGEND - Contactor - Communications Bus - Compressor Protection Control Module - Discharge Gas .
P LEGEND CGF EM” E? kL SNB TB TRAN U Ground Fault Module Communications Bus Compressor Contactor Relay Relay Module (Low Voltage) High-Pressure Switch Low Voltage Plug Snubber Terminal Block Transformer Unloader Fig.
c - CGF - Z” 1 DGT - DSIO - EXV - HPS - /$ :: ;b I: TB - PL12-7 Poll-7 LEGEND Contactor Ground Fault Module Common Control Relay Discharge Gas Thermostat (Optional) Relay Module (Low Voltage) Electronic Expansion Valve High-Pressure Switch Low Volta 8 e Normally losed Plug Reset Button Terminal Board Fig.
1. Electronic Expansion Valve EXV OPERATION - These valves control the flow of liq- uid refrigerant into the cooler. They are operated by pro- cessor to maintain a specified superheat at lead compressor entering gas thermistor (located between compressor motor and cylinders).
_I.: ,/:. ::. i .‘I Because the EXVs are controlled by the processor mod- ule, it is possible to track valve position. During initial start-up, EXV is fully closed. After start-up, valve po- sition is tracked by processor by constantly observing amount of valve movement.
MUFFLERS COMPRESSORS CIRCUIT B r CIRCUIT A J - FILTER I I c DRIER LEGEND DPT - Discharge Pressure Transducer :ppTT - Oil Pressure Transducer - Suction Pressure Transducer T - Thermistor Number Fig.
AIR VENT LEAVING : WATER/BRINE THERMISTOR (Tl) COOLER ENTERING FLUID WATER/BRINE BAFFLE CONNECTION SUCTION CONNECTION INLET CONNECTION DRAIN LEAVING WATER/BRINE CONNECTION I COOLER TUBE (TYPICAL) ENTERING WATER/BRINE THERMISTOR Fig.
Thermistors - All thermistors are identical in their tem- perature vs. resistance performance. Resistance at various temperatures are listed in Tables 15 and 16. LOCATION - General location of thermistor sensors are shown in Fig. 13. Cooler Leaving Water Thermistor (Tl) - Tl is located in leaving water nozzle.
Table 15 - Thermistor Temperature (OF) vs Resistance/Voltage Drop; Flotronic’” II TEMP:;fTURE -2i.b -24.0 -23.0 -22.0 -21.0 -20.0 -18.0 -17.0 -16.0 - 15.0 - 14.0 -13.0 -12.0 -11.0 - 10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 I;.; -l:o 0.0 ::: too 5:o 7x 8:0 9.
- Table 16 - Thermistor Temperature (“C) vs Resistance/Voltage Drop; Flotronic’” II TEMPERATURE (C) -40 -39 -38 -37 -36 -35 -34 -33 -32 -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 1; -7 1; 1; -2 -1 0 : i z 3 109 VOLTAGE DROP (V) 4.
THERMISTOR* REFRIGERANT DISCHARGE ENTERING TEMPERATURE PRESSURE CYLINDERS TRANSDUCER* EQUALIZER LINE OIL PRESSURE TRANSDUCER* SUCTION PRESSURE TRANSDUCER* SIGHT GLASS (EACH COMPRESSOR) *Lead compressor only Fig.
Control Modules Turn controller power off before servicing controls. This ensures safety and prevents damage to controller. PROCESSOR MODULE (PSIO). 4 IN/4 OUT MODULE (SIO), LOW-VOLTAGE TiELAY’MODUL.
PSI0 DSIO DSIO HSIO SIO ( pRocEMssOp (RELAY) (EXV DRIVER) (LID) (4 I;W;UT Fig. 19 - Sensor Bus Wiring (Communications) PROCESSOR MODULE (PSIO) (Fig. 20) Inputs - Each input channel has 3 terminals; only 2 of the terminals are used. Application of machine determines which terminals are used.
4 IN/4 OUT MODULE (SIO) (Fig. 22) - 4 In/4 Out mod- ule allows the following features to be utilized: 1. Temperature Reset by outdoor air or space temperature. A remote thermistor (Part No, 30GB660002) is also re- quired. NOTE: This accessory is not required for return water temperature reset.
SYMPTOMS COMPRESSOR DOES NOT RUN COMPRESSOR CYCLES OFF ON LOW PRESSURE COMPRESSOR SHUTS DOWN ~N&-l;l;PFlESSURE UNIT OPERATES LONG OR CONTINUOUSLY SYSTEM NOISES COMPRESSOR LOSES OIL FROSTED SUCTION.
ACCESSORY UNLOADER INSTALLATION Some of the 30G FlotronicT” II units come standard with unloader(s), and many permit additional unloader(s) to be added if desired. See Table 18. IMPORTANT: Accessory hot gas bypass cannot be installed with accessory unloaders on units with more than 4 compressors.
~13014 115v 0R 230y;f;~RO~ S CHEMATI C i FROM 115V OR 23OV CONTROL SCHEMATIC TRAN -- 13 6 y ‘. 0 0 0 0 r--‘---------‘-‘-“--“‘-“-----------~ 1 IDS00 ! (LWl 1 -9RA 1’ ! - VI0 I I I I I I 1 I L--a--- RED- 080-110 (SO/SO Hz) and 130 (60 Hz) LEGEND ERCS - Contactor - Compressor Protection Control System k z ~~.
130 (50 Hz), 150-210, 225, 250, AND 280 UNITS (and associated modular units) 1. Install control wiring. The minimum wire size for in- stallation is 16 AWC (American Wire Gage).
GdYEL & EE Lfh]f ~gl 1 - - - - - - - - - cALARncooE31~ --------- ~~ ------II- (AIJM CODE 21,301 o(oocm I --------- i I ’ I I ’ ! I I r - - - - - - - - I ’ ’ L-B----- I ’ l ’ qg&#g.
r-- --- -- EXTERNAL 3OGN040-210 AND ASSOCIATED MODULAR UNITS + --- u 3 m-7 ---- 4 -cl TB-7 30GT225,250,280 FLOTRONIC II UNITS TB - Terminal Block NOTE: The 30GT225,250,280 Flotronic’” II units require the acces- sory options module package for this feature Fig.
&-jQ - 13 a-- 4 IN/4 OUT SWITCH MODULE ,- - m - - - -f-J J7-10 ,~,. $$ & i- - ___ - _-a J7-lf c,: * 30GN040-210 AND ASSOCIATED MODULAR UNITS ---- 1 -El TB-11 --a- -0 2 TBI1 30GT225,250,280 FLOTRONIC’” II UNITS TB - Terminal Block NOTE: The 30GT225,250,280 Flotronic II units require the acces- sory options module for this feature Fig.
8. Reinstall all 6 wire connectors and the green ground wire. 9. Carefully check all wiring connections before restoring power. 10. Verify the LOCAL/ENABLE-STOP-CCN switch is in STOP position 11.
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Copyright 1994 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Ein wichtiger Punkt beim Kauf des Geräts Carrier 040-420 (oder sogar vor seinem Kauf) ist das durchlesen seiner Bedienungsanleitung. Dies sollten wir wegen ein paar einfacher Gründe machen:
Wenn Sie Carrier 040-420 noch nicht gekauft haben, ist jetzt ein guter Moment, um sich mit den grundliegenden Daten des Produkts bekannt zu machen. Schauen Sie zuerst die ersten Seiten der Anleitung durch, die Sie oben finden. Dort finden Sie die wichtigsten technischen Daten für Carrier 040-420 - auf diese Weise prüfen Sie, ob das Gerät Ihren Wünschen entspricht. Wenn Sie tiefer in die Benutzeranleitung von Carrier 040-420 reinschauen, lernen Sie alle zugänglichen Produktfunktionen kennen, sowie erhalten Informationen über die Nutzung. Die Informationen, die Sie über Carrier 040-420 erhalten, werden Ihnen bestimmt bei der Kaufentscheidung helfen.
Wenn Sie aber schon Carrier 040-420 besitzen, und noch keine Gelegenheit dazu hatten, die Bedienungsanleitung zu lesen, sollten Sie es aufgrund der oben beschriebenen Gründe machen. Sie erfahren dann, ob Sie die zugänglichen Funktionen richtig genutzt haben, aber auch, ob Sie keine Fehler begangen haben, die den Nutzungszeitraum von Carrier 040-420 verkürzen könnten.
Jedoch ist die eine der wichtigsten Rollen, die eine Bedienungsanleitung für den Nutzer spielt, die Hilfe bei der Lösung von Problemen mit Carrier 040-420. Sie finden dort fast immer Troubleshooting, also die am häufigsten auftauchenden Störungen und Mängel bei Carrier 040-420 gemeinsam mit Hinweisen bezüglich der Arten ihrer Lösung. Sogar wenn es Ihnen nicht gelingen sollte das Problem alleine zu bewältigen, die Anleitung zeigt Ihnen die weitere Vorgehensweise – den Kontakt zur Kundenberatung oder dem naheliegenden Service.
