RHOSS TCHEY 115 Instrucciones De Uso página 41

II.11 CHECK-LIS T
1 - OUTLET PRESSURE HIGH
Insufficient water fl ow to the rejec tion devic e:
Temperature of condens er inlet water too high:
Presenc e of water in the water circuit of the rejection device:
Insufficient r efrigerant load:
2 - OUTLET PRESSURE LOW
Insufficient r efrigerant load:
Presence of air in the water s ystem (in chiller operating mode):
Insufficient water flow to the evaporator (in chiller operating mode):
Mechanic al problems in the compress or:
Exc essi ve ther mal load (in heat pump operati ng mode):
3 - INLET PRESSURE HIGH
Exc essi ve ther mal load:
Irregular operation of the expansion val ve:
Mechanic al problems in the compress or:
4 - INLET PRESSURE LOW
Insufficient r efrigerant load:
Dirty plate exchanger:
Filter partiall y obstructed (appears fr osted):
Irregular operation of the expansion val ve:
Presenc e of air in the water s ystem:
Insufficient water fl ow:
5 – COMPRESSOR: DOES NOT ST ART
Microprocessor board alar m:
No voltage, switc h open:
Overload protection triggered:
No request for cooling with wor king set-point correct:
Wor king set-point too high:
Defecti ve contactors:
Compress or elec tric motor failure:
6 – COMPRESSOR: MAK ES A BUZZING NOISE
Incorrect power s upply voltage:
Compress or contac tor malfunctioning:
Mechanic al problems in the compress or:
7 – COMPRESSOR: ST ARTS AND STOPS
Faulty low pressure switc h:
Insufficient r efrigerant load:
Filter partiall y obstructed (appears fr osted):
Irregular wor king of the expansion val ve:
8 – COMPRESSOR: STOPS
Faulty high pressure switc h:
Insufficient water fl ow to the rejec tion devic e:
Temperature of rejecti on devic e inlet water too high:
Presenc e of air in the water circuit of the rejec tion devic e:
Insufficient r efrigerant load:
9 – COMPRESSOR: NOISY AND VIBR ATES
Compress or is pumping liquid, exc essi ve refrigerant flui d in crankcas e.
Mechanic al problems in the compress or:
Unit functioni ng at the limit of the use c onditions envisioned:
10 – COMPRESSOR: RUNS CONTINUOUSLY
Exc essi ve ther mal load:
Working set-point too low in cooling cycle (too high in heating cycle).
Bad water circulation i n the plate exc hanger:
Insufficient r efrigerant load:
Filter partiall y obstructed (appears fr osted):
Control board faulty:
Irregular wor king of the expansion val ve:
Compress or contac tor malfunctioning:
Poor ventilati on of the coils:
11 - CIRCULATION PUMP DOES NOT ST ART
Lac k of voltage to the pump unit:
Circulation pump loc ked:
Circulation pump motor failed:
Remote ON/OFF command open (OFF position):
PROBLEM
SECTION II: INST ALL ATION AND MAINTEN ANCE
RECOMMENDED ACTION
chec k circulati on pump operati on.
Chec k operating limits
bleed the water s ystem.
drain exc ess.
1 - identify and elimi nate any leaks;
2 - restore correct l oad.
bleed the s ystem.
chec k and adjust if nec essar y.
replace c ompress or.
chec k s ystem sizing, infiltrations and insul ation.
chec k s ystem sizing, infiltrations and insul ation.
chec k oper ation.
replace c ompress or.
1 - identify and elimi nate any leaks;
2 - restore correct l oad.
Chec k, clean the heat-exc hanger.
replace filter.
chec k oper ation.
bleed the water s ystem.
chec k circulati on pump operati on.
identify alar m and take appropriate action.
close the s witch.
1 - reset the s witch;
2 - chec k the unit at start up.
chec k and if necess ary wait for cooling request.
chec k and if necess ary readjust s et-point.
replace c ontactor.
chec k for short circuit.
chec k voltage, i nvestigate causes.
replace c ontactor.
replace c ompress or.
chec k pressure s witc h calibration and operation.
1 - identify and elimi nate any leaks;
2 - restore correct l oad.
replace filter.
chec k oper ation.
chec k pressure s witc h calibration and operation.
chec k oper ation of circulation pump.
chec k unit operation limits.
bleed the water s ystem.
drain exc ess.
1 - chec k operati on of the expansi on valve;
2 - chec k overheating.
3 - adj ust overheating or replac e expansion val ve.
replace c ompress or.
chec k unit func tion li mits.
chec k s ystem sizing, leakage and i nsulation.
chec k s etting and r eset.
chec k and adjust if nec essar y.
1 - identify and elimi nate any leaks;
2 - restore correct l oad.
replace filter.
replace the board.
chec k oper ation.
replace c ontactor.
1 - chec k clearances and make sur e coils ar e not obstruc ted;
2 - chec k fan functi on.
chec k electrical connections.
release circul ation pump.
replace circul ation pump.
put i n ON position.
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