Trane IntelliPak SCRF 25, Инструкция по установке, эксплуатации и обслуживанию

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82 SCXF-SVX01Q-EN
N No otte e:: Sufficient cooling load must be visible to
refrigerant circuit controls for mechanical
refrigeration to operate. If necessary,
temporarily reduce the discharge air setpoint
to verify the refrigeration cycle operation.
9. Check voltage at all compressor terminals to ensure
it is within 10% of nameplate voltage.
10. Check voltage imbalance from these three voltage
readings at each compressor. Maximum allowable
voltage imbalance, phase to phase is 2%.
11. Start the first step compressor only.
12. Check amp draw at compressor terminals. RLA and
LRA are on the unit nameplate.
13. Measure amp draw at evaporator fan motor
terminals. FLA data is on the motor nameplate.
14. As soon as a compressor starts, verify correct
rotation. If a scroll compressor is allowed to run
backwards for even a very short period of time,
internal compressor damage could occur and
compressor life could be reduced. When rotating
backwards scroll compressors make a loud noise,
do not pump, and draw about 1/2 expected amps,
and low side shell gets hot. Immediately shut off a
compressor rotating backwards and correct wiring.
N NO OT TIIC CE E
C Co om mp prre esssso orr D Da am ma ag ge e!!
F Fa aiillu urre e tto o ffo ollllo ow w iin nssttrru uccttiio on nss b be ello ow w cco ou ulld d rre essu ulltt iin n
cco om mp prre esssso orr d da am ma ag ge e..
IIm mp prro op pe err p po ow we err p ph ha assiin ng g w wiillll cca au usse e cco om mp prre esssso orr tto o
rru un n b ba acckkw wa arrd dss.. C Co om mp prre esssso orr cco ou ulld d b be e rru un nn niin ng g
b ba acckkw wa arrd dss iiff iitt iiss n no oiissy y,, llo ow w ssiid de e ssh he ellll g ge ettss h ho ott,,
ssu uccttiio on n p prre essssu urre e d do oe ess n no ott d drro op p w wiitth hiin n 5 5 sse ecco on nd dss
a afftte err sstta arrttu up p,, a an nd d cco om mp prre esssso orr o on nlly y d drra aw wss ½ ½
e ex xp pe ecctte ed d a am mp pss.. S Stto op p tth he e cco om mp prre esssso orr iim mm me ed diia atte elly y
a an nd d h ha av ve e a a q qu ua alliiffiie ed d e elle eccttrriicciia an n o orr tte ecch hn niicciia an n
p prro op pe errlly y ttrra aiin ne ed d iin n 3 3 p ph ha asse e p po ow we err cco orrrre ecctt tth he e
w wiirriin ng g..
15. A Aiirr C Co oo olle ed d O On nlly y: Check condenser fans for proper
rotation. From top of unit, correct rotation direction
is clockwise. If running backwards, correct wiring.
W WA AR RN NIIN NG G
R Ro otta attiin ng g C Co om mp po on ne en nttss!!
F Fa aiillu urre e tto o d diisscco on nn ne ecctt p po ow we err b be effo orre e sse errv viicciin ng g cco ou ulld d
rre essu ulltt iin n rro otta attiin ng g cco om mp po on ne en nttss ccu uttttiin ng g a an nd d sslla assh hiin ng g
tte ecch hn niicciia an n w wh hiicch h cco ou ulld d rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss
iin njju urry y..
D Du urriin ng g iin nsstta alllla attiio on n,, tte essttiin ng g,, sse errv viicciin ng g a an nd d
ttrro ou ub blle essh ho oo ottiin ng g o off tth hiiss p prro od du ucctt iitt m ma ay y b be e
n ne ecce essssa arry y tto o w wo orrkk w wiitth h lliiv ve e a an nd d e ex xp po osse ed d rro otta attiin ng g
cco om mp po on ne en nttss.. H Ha av ve e a a q qu ua alliiffiie ed d o orr lliicce en nsse ed d sse errv viicce e
iin nd diiv viid du ua all w wh ho o h ha ass b be ee en n p prro op pe errlly y ttrra aiin ne ed d iin n
h ha an nd dlliin ng g e ex xp po osse ed d rro otta attiin ng g cco om mp po on ne en nttss,, p pe errffo orrm m
tth he esse e tta asskkss..
16. After 10 minutes, start second compressor of
manifold circuits.
17. Allow 10 minutes for circuit operation to stabilize at
full load.
18. Complete charging, if required.
Final Refrigerant Charge
If full charge was not used during installation, follow
these steps:
1. Determine remaining charge required by
subtracting charge added during “Preliminary
Refrigerant Charging,” p. 41 from the total.
2. With all circuit compressors running, SLOWLY
meter remaining R-410A into the suction line from
the LIQUID charging connection.
N NO OT TIIC CE E
C Co om mp prre esssso orr D Da am ma ag ge e!!
O Ov ve errcch ha arrg giin ng g ssy ysstte em m cco ou ulld d rre essu ulltt iin n cco om mp prre esssso orr
ffa aiillu urre e a an nd d//o orr rre ed du ucce ed d cco om mp prre esssso orr lliiffe e..
D Do o n no ott o ov ve errcch ha arrg ge e ssy ysstte em m.. E Ex xcce essssiiv ve e rre effrriig ge erra an ntt
cch ha arrg giin ng g cca an n cca au usse e cco om mp prre esssso orr lliiq qu uiid d ssllu ug gg giin ng g a att
sstta arrttu up p,, a an nd d cco on nd diittiio on nss w wh he erre e cco om mp prre esssso orrss a an nd d//o orr
cco on nd de en nsse err ffa an nss ssh ho orrtt ccy ycclle e..
N NO OT TIIC CE E
C Co om mp prre esssso orr D Da am ma ag ge e!!
F Fa aiillu urre e tto o ffo ollllo ow w iin nssttrru uccttiio on nss b be ello ow w cco ou ulld d rre essu ulltt iin n
cco om mp prre esssso orr ffa aiillu urre e a an nd d//o orr rre ed du ucce ed d cco om mp prre esssso orr
lliiffe e..
T To o p prre ev ve en ntt cco om mp prre esssso orr lliiq qu uiid d ssllu ug gg giin ng g,, o on nlly y a ad dd d
lliiq qu uiid d iin n tth he e ssu uccttiio on n lliin ne e w wh he en n tth he e cco om mp prre esssso orr iiss
rru un nn niin ng g.. U Usse e e ex xttrre em me e cca au uttiio on n tto o m me ette err lliiq qu uiid d
rre effrriig ge erra an ntt iin ntto o tth he e ssu uccttiio on n lliin ne e ssllo ow wlly y.. IIff lliiq qu uiid d iiss
a ad dd de ed d tto oo o rra ap piid dlly y,, cco om mp prre esssso orr o oiill d diillu uttiio on n a an nd d o oiill
p pu um mp po ou utt cco ou ulld d o occccu urr..
3. Use an accurate scale to measure and record
amount of R-410A added.
4. After unit has been operating for approximately 30
minutes at full load, measure and record operating
pressures.
A Aiirr C Co oo olle ed d O On nlly y: Operating pressure measurement
must be made with all condenser fans running.
5. Repeat for other circuits.
6. Confirm, and adjust charge if needed, by checking
subooling at AHRI 340/360 full load operating
conditions (80/67°F entering evap, ~300CFM/ton, 85/
95°F EWT/LWT for water-cooled and 95°F OA for
air-cooled).
• Water-cooled subcooling should be 8-10°F
• Air-cooled subcooling should be 14-18°F
S Stta arrttu up p