SPX HANKISON HIT 50 - Operation Guide; Start-up Sequence; Operating Condition Limits

3
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illu-
minates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:
 35/110°F,2/43°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)