6
ENGINEERING DATA
Min.-Max. Inlet Air Pressure (compressed air at inlet to dryer)
5 psig (0.3 bar) See Serial Tag for Maxium Pressure
Max. Inlet Air Temp. (compressed air at inlet to dryer)
120°F (49°C)
Min.-Max. Ambient Temperature
Air-cooled: 35°F (1.7°C)-110°F (43°C) / Water-cooled: 35°F (1.7°C)-130°F (54°C)
Refrigeration System Data
Compressor Type
Heremetic - Resistance Start, Induction Run - Non-Cycling
Refrigeration Compressor Horsepower
1/4
1/2
3/4
BTU/HR-Refrigeration Only
@ 35°F Evaporator & 100°F Ambient
60 Hz / 50 Hz
2160 / 1800
4430 / 3692
6020 / 5017
Refrigerant Type
R-134a
Refrigerant Charge
See dryer serial number tag
Suction Pressure Setting (controlled by hot gas by-pass valve) - psig (barg)
31.5 (2.2)
Condenser Fan Switch Setting (in-out) - psig (barg)
N/A
N/A
180-130 (12.4-9.0)
Air Flow Across Condenser (cfm)
60 Hz / 50 Hz
275 / 229
350 / 292
530 / 440
Condenser Cooling Water Requirements (water-cooled
models only) gpm@85°F (40 psig min. Pressure)
60 Hz / 50 Hz
NA
NA
2.2 / 1.8
Electrical
Nominal Voltages
115/1/60
Max.-Min. Voltage
127-104
Rated Load Amps
5.9
10.3
14.7
Locked Rotor Amps
28.0
48.0
66.3
Minimum Circuit Ampacity
7.3
12.4
17.5
Branch Circuit Fuse Size (amps)
15
20
25
Watts @ 35°F Evaporator & 100°F Ambient
465
815
1060
Overload
Thermal & Current (Auto reset)
Nominal Voltages
208-230/1/60
Max.-Min. Voltage
253-207
253-187
253-197
Rated Load Amps
3.0
5.1
8.3
Locked Rotor amps
14.4
23.0
33.5
Minimum Circuit Ampacity
3.7
5.2
10.5
Branch Circuit Fuse Size (amps)
15
15
15
Watts @ 35°F Evaporator & 100°F Ambient
465
815
1060
Overload
Thermal & Current (Auto reset)
Nominal Voltages
220-240/1/50
Max.-Min. Voltage
264-198
Rated Load Amps
2.6
4.2
7.6
Locked Rotor Amps
14.5
21.0
53.0
Minimum Circuit Ampacity
3.2
5.2
9.9
Branch Circuit Fuse Size (amps)
15
15
15
Watts @ 35°F Evaporator & 100°F Ambient
395
669
930
Overload
Thermal & Current (Auto reset)
Minimum-Maximum Operating Conditions
RHP50
RHP64 & RHP93
RHP100 & RHP178
ELECTRICAL SCHEMATIC
Models RHP50, RHP64, RHP93,
RHP100 and RHP178
LEGEND
PBS - Push Button Switch
1LT - Power On Light
2LT - High Temperature Light
SR - Start Relay
MTR - Compressor
FM - Fan Motor
HTS - High Temperature Switch
OL - Overload
SOL - Programmable Electric Drain
CAP - Start Capacitor
FPS - Fan Pressure Switch
CT - Contactor w/115v coil
SW - On/Off Switch
RHP64 & RHP93
RHP50
RHP100 & RHP178
3
1
OL
MTR
SR
SR
R
C
S
FM
HTS
SOL
L2
L1
R
G
2LT
1LT
PBS
208/230-1-60
ONLY
FOR
FPS
3
1
OL
MTR
SR
SR
R
C
S
FM
HTS
SOL
L2
L1
R
G
2LT
1LT
PBS
CAP
FPS
