Use and Care Manual

4
2.0 OPERATION
NOTE:Installationsabove6000feet,1825meters
Unitisadjustedtooperateinaltitudesupto6000feet,
1825meters.Ifunitisinstalledinanaltitudeabovethis,
andhasnotbeenpresetatthefactoryforthisaltitude,
contactManufacturer’sServiceDepartment.
2.1 Start-up
Startrefrigerationsystembypushingtheon/offswitch
totheONposition(depressrockerswitchonsidemarked
“I”).
NOTE:Thefaultlightmayilluminatewhenunitisener-
gized.Lightshouldgooutapproximately5minutesafter
start-up.Iflightremainslitafter30minutesorillumi-
natesaftergoingout,refertoTroubleshootingGuide.
2.2 Operating check points
Checkthefollowingonaperiodicbasis:
A. RockerswitchisintheONposition.
B. Amberfaultlightisout.
C. Condensateisbeingregularlydischarged.
2.3 Minimum/maximum operating conditions
A. Minimum/Maximumairpressure:20/250psig,
 1.4/17.6kgf/cm
2
B. Maximuminletairtemperature:180°F,82°C
C. Minimum/Maximumambienttemperature:
 40/110°F,4/43°C
ControlPanel
2. Fordryerswithanaftercoolerinstalledupstream
 Flowcapacityinscfm(m
3
/min)@100°F,38°Cinlet
temperature,100°F,38°Cinletpressuredewpoint,
100°F,38°Cambienttemperature,50°F,10°Coutlet
pressuredewpoint,andlessthan10psi,0.7kgf/cm
2
pressure drop.
D. Maximumowcapacity
1. Fordryerswithoutanaftercoolerinstalledupstream.
Flowcapacityinscfm(m
3
/min)@180°F,82°Cinlet
temperature,160°F,71°Cinletpressuredewpoint,
95°F,35°Cambienttemperature,50°F,10°Coutlet
pressuredewpoint,andlessthan5psi,0.35kgf/cm
2
pressure drop.
I
O
On/Off Switch
Fault Light
60 HZ
Inlet Pressure
psig (kgf/cm
2
)
175 (12.3) 150 (10.6) 125 (8.8) 100 (7.0)
Model
20 23 (0.65) 22 (0.62) 20 (0.57) 18 (0.51)
25 29 (0.82) 27 (0.76) 25 (0.71) 23 (0.65)
35 41 (1.16) 38 (1.08) 35 (0.99) 32 (0.91)
50 58 (1.64) 54 (1.53) 50 (1.42) 45 (1.27)
75 87 (2.46) 81 (2.29) 75 (2.12) 68 (1.93)
100 116 (3.29) 108 (3.06) 100 (2.83) 91 (2.58)
125 145 (4.12) 135 (3.82) 125 (3.54) 114 (3.23)
50 HZ
Inlet Pressure
psig (kgf/cm
2
)
175 (12.3) 150 (10.6) 125 (8.8) 100 (7.0)
Model
20 20 (0.57) 18 (0.51) 17 (0.48) 15 (0.42)
25 24 (0.68) 23 (0.65) 21 (0.59) 19 (0.54)
35 31 (0.88) 29 (0.82) 27 (0.76) 24 (0.68)
50 58 (1.64) 54 (1.53) 50 (1.42) 45 (1.27)
75 71 (2.01) 66 (1.87) 61 (1.73) 55 (1.56)
100
97 (2.75)
90 (2.55) 83 (2.35)
76 (2.15)
125 121 (3.43) 112 (3.17) 104 (2.95) 95 (2.69)
60 HZ
Inlet Pressure
psig (kgf/cm
2
)
175 (12.3) 150 (10.6) 125 (8.8) 100 (7.0)
Model
20 32 (0.91) 30 (0.85) 28 (0.79) 25 (0.71)
25 40 (1.13) 37 (1.05) 34 (0.96) 31 (0.88)
35 55 (1.56) 51 (1.44) 47 (1.33) 43 (1.22)
50 78 (2.21) 73 (2.07) 67 (1.90) 61 (1.73)
75 118 (3.34) 110 (3.12) 102 (2.89) 92 (2.61)
100 157 (4.45) 146 (4.14) 136 (3.85) 123 (3.48)
125 197 (5.58) 183 (5.18) 170 (4.82) 155 (4.39)
50 HZ
Inlet Pressure
psig (kgf/cm
2
)
175 (12.3) 150 (10.6) 125 (8.8) 100 (7.0)
Model
20 27 (0.76) 25 (0.71) 23 (0.65) 21 (0.59)
25 33 (0.93) 31 (0.88) 29 (0.82) 26 (0.74)
35 43 (1.22) 40 (1.13) 37 (1.05) 33 (0.93)
50 78 (2.21) 73 (2.07) 67 (1.90) 61 (1.73)
75 96 (2.72) 90 (2.55) 83 (2.35) 75 (2.12)
100 131 (3.71) 122 (3.46) 113 (3.20) 102 (2.89)
125 164 (4.65) 152 (4.31) 142 (4.02) 129 (3.65)