2920 1390 02
15
Instruction book
5. Condensate trap continuously discharges air and water
a. Automatic drain system out of order
a. Have system checked
6. Evaporator pressure is too high or too low at unload
a. Hot gas by-pass valve incorrectly set or out of order
a. Have hot gas by-pass valve adjusted
b. Condenser pressure too high or too low
b. See 2
c. Shortage of refrigerant
c. Have circuit checked for leaks and recharged
7 PRINCIPAL DATA
7.1 Limitations/nominal conditions
50 Hz 60 Hz
Nominal conditions
Compressed air inlet pressure . . . . . . . . . . . . . . . . . . . . . . . . . bar(e) 7 7
Compressed air inlet temperature . . . . . . . . . . . . . . . . . . . . . . . Celsius 35 38
Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Celsius 25 38
Inlet relative vapour pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1
Pressure dewpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Celsius 3 4
Cooling air inlet temperature . . . . . . . . . . . . . . . . . . . . . . . . . . Celsius 25 38
Limitations
Maximum compressed air inlet pressure . . . . . . . . . . . . . . . . . bar(e) 13 13
Min.-max. ambient air temperature . . . . . . . . . . . . . . . . . . . . . Celsius 0-45 0-45
Min.-max. compressed air inlet temperature . . . . . . . . . . . . . . Celsius 0-55 0-55
7.2 Specific data of FD90, FD110 and FD130 1)
FD90 FD110 FD130
Volume flow at dryer inlet at nominal conditions . . . . . 50 Hz l/s 90 110 130
60 Hz l/s 92 113 135
Pressure drop through dryer at nominal conditions,
approx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . bar 0.16 0.15 0.21
Electric power input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Hz kW 1.30 1.40 1.90
60 Hz kW 1.80 2.30 2.30
Refrigerant
Tetrafluoroethane CH
2
FCF
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R404a R404a R404a
Total charge, approx. . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Hz kg 0.80 1.00 1.10
60 Hz kg 1.00 1.10 1.10
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