GEM Models A/W
Operation: Performance
Page
17
Beginning at the compressor, the refrigerant is compressed into a high temperature gas. The discharge line
directs this gas to the condenser. At the condenser (air or water cooled) the gas is cooled by either air or
water and then it condenses into a liquid.
This high pressure liquid then goes through the liquid line to the expansion valve. The thermostatic expansion
valve meters liquid refrigerant into the evaporator, the volume of liquid refrigerant depending upon the
temperature of the evaporator.
At the evaporator, the refrigerant enters an area of relatively low pressure, where it can easily “boil off” or
evaporate. As it evaporates, it absorbs heat from the evaporator and whatever is in contact with it (such as
water inside it). After the evaporator, the refrigerant, now a low pressure vapor, goes through the suction line
back to the compressor, where the cycle is repeated.
Typical Low Side Pressure:
Air Cooled:
34-38
PSIG
Water Cooled: 32 PSIG
Typical Discharge Pressure:
Air Cooled:
220-275
PSIG
Water Cooled: 245 PSIG
Typical Compressor Amp Draw:
GEM0650 A&W 115/60/1
8-9 Amps
GEM0655 A&W 230/50/1
5-7 Amps
GEM0956 A&W 208-230/60/1
4-5 Amps
GEM0955 A&W 230/50/1
4-5 Amps
GEM1256 A&W 208-230/60/1
5-6 Amps
GEM1855 Air 230/50/1 4-5 Amps
GEM1856 Air 208-230/60/1 4-5 Amps
Typical Auger Drive Motor Amp Draw:
GEM0650 A&W 115/60/1
3.1 to 3.8 Amps
GEM0655 A&W 230/50/1
1.6 to 3.8 Amps
GEM0956 A&W 208-230/60/1 1.6 to 1.8 Amps
GEM0955 A&W 230/50/1
1.6 to 3.8 Amps
GEM1256 A&W 208-230/60/1 1.6 to 1.8 Amps
GEM1855 Air 230/50/1
1.6 to 3.8 Amps
GEM1856 Air 208-230/60/1 1.6 to 1.8 Amps
Expansion Valve Superheat:
6-8 degrees
High Pressure Cut Out- Automatic Reset:
450 PSIG
Low Pressure Cut Out- Automatic Reset:
15 PSIG
Refrigerant Charge: R404A
GEM0650
GEM0655
Air Cooled:
24 ounces
Air Cooled:
24 ounces
Water Cooled:
19 ounces
Water Cooled:
19 ounces
GEM0956
GEM0955
Air Cooled:
30 ounces
Air Cooled:
30 ounces
Water Cooled:
22 ounces
Water Cooled:
22 ounces
GEM1256
Air Cooled:
36 ounces
GEM1855
Water Cooled:
24 ounces
Air Cooled
30 ounces
GEM1856
Air Cooled
30 ounces
Summary of Contents for GEM1856
Page 2: ......
Page 8: ...GEM Models A W For The Installer Page 2 GEM0650 0655 0956 0955 A W ...
Page 9: ...GEM Models A W For The Installer Page 3 GEM1256A W ...
Page 40: ...GEM Models A W Wiring Diagram Page 34 Wiring Diagram GEM0650 A W ...
Page 41: ...GEM Models A W Wiring Diagram Page 35 Wiring Diagram GEM0956 A W GEM1256A W ...
Page 42: ...GEM Models A W Wiring Diagram Page 36 Wiring Diagram GEM0655 A W GEM0955 A W ...
Page 43: ...GEM Models A W Wiring Diagram Page 37 Wiring Diagram GEM1856 Air ...
Page 44: ...GEM Models A W Wiring Diagram Page 38 Wiring Diagram GEM1855 Air ...