Great Lakes Air Products ERF SERIES Panduan Pemilik - Halaman 5
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Halaman CetakELECTRICAL CONNECTION
The Nameplate/Data Plate located on each unit identifies the power supply requirements.
Units supplied with cord and plug requires the installation of a receptacle rated for 15
amps.
Units supplied with electrical junctions, require a suitable fused disconnect in compliance
with the National and Local Electrical Code requirements. Maximum fuse specification
can be located on the Nameplate/Data Plate.
The wiring of all functional electrical components has been completed and tested at the factory in
accordance with the electrical wiring schematic provided with this manual.
STARTUP PROCEDURE - ERF-20A through ERF-200A
Energize the refrigeration compressor by placing the "on/off" dryer switch with indicating light to the "on
(I)" position. The refrigerant compressor and fan motor will begin to operate. The suction/analyzer gauge
will fall to a range of 28-34 PSIG. If the suction/analyzer gauge is not in the specified range, contact a
qualified refrigeration service technician or the Accessory Service Department.
THREE PHASE UNITS REQUIRE AN 8 HOUR CRANK CASE WARMUP PRIOR TO
STARTUP TO PREVENT EQUIPMENT DAMAGE
The unit must have primary power applied with the "on/off" switch in the "OFF (0)"
position for no less than 8 hours. This energizes the crank case heater to allow any liquid
refrigerant in the crankcase to be turned into vapor prior to startup. Energizing the dryer
prior to crank case heating can "wash away" compressor lubricants and will cause
compressor premature failure.
STARTUP PROCEDURE - ERF-250A through ERF-2250A
Energize the refrigeration compressor by placing the "on/off" dryer switch with indicating light to the "on
(I)" position. The refrigerant compressor and fan motor will begin to operate. The suction/analyzer gauge
will fall to a range of 73-82 PSIG and the discharge gauge will rise to a range of 200 to 382 PSIG. These
units are equipped with condenser fan cycle controls and operate independent of the compressor. Each
fan is controlled via a refrigeration discharge pressure switch (260-200 PSIG) for single fan units and
(300-230 PSIG) for two fan units. If the suction/analyzer or discharge gauge is not in the specified range,
contact a qualified refrigeration service technician or the Great Lakes Service Department.
SHUT DOWN PROCEDURE
Switch the dryer off by placing the "on/off" dryer switch with indicating light to the "OFF (0)" position, if
compressed air is not being used. If the shutdown resulted in loss of main power interruption, repeat
start up procedure so crank case heater has time to raise the crank case temperature.
Great Lakes Air Products ERF Series Refrigeration Dryers
Effective for equipment manufactured 01/01/2010
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