Emerson Copeland Scroll YH16K1E, Инструкции по применению

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AGL_HP_ST_YHK1E_E_Rev02 11
Compressor model
Refrigerant
charge limit
Crankcase heater
Position
Height
in mm
YH04K1E to YH09K1E 1.54 kg
10 - 40
YH11K1E to YH16K1E 1.93 kg
Table 7: Refrigerant charge limits & crankcase heater position
The initial start-up in the field is a very critical moment for any compressor because all load-bearing
surfaces are new and require a short break-in period to carry high loads under adverse conditions.
The crankcase heater must be turned on a minimum of 12 hours prior to starting the
compressor.
This will prevent oil dilution and bearing stress on initial start-up. The crankcase
heater must remain energized during compressor off cycles.
NOTE: Pl ease refer to the Spare Parts list available at www.climate.emerson.com/en-gb/tools-
resources to select the correct crankcase heater model.
Caution: Crankcase heaters must be properly grounded!
For installation, the manufacturer/installer shall follow the recommendations mentioned below.
Assembly instructions
▪
Choose the appropriate model according to compressor size and required wattage.
▪
Check the compressor application guidelines for crankcase heater connection and operation.
▪
Position the crankcase heater between the lower cover and the lower bearing weld projection
(Fig. 7) .
▪
Fit the heater horizontally around the crankcase, ensuring that it is in close contact with the
compressor housing along the entire length.
▪
Avoid having the heating portion of the heater in contact with any weld projection (Fig. 8 & 9) .
▪
Avoid having the assembly heater inclined (Fig. 10) .
▪
Close the lock and tighten the screw, torque: 2-3 Nm.
▪
The excess clamp bracket may be trimmed. Sharp edges must not come into contact with wires.
The presence of the heater shall be made evident by posting caution signs or markings at appropriate
locations.
Figure 7 Figure 8 Figure 9 Figure 10
Electrical connection
▪
Connect the crankcase heater according to the compressor application guidelines.
▪
The crankcase heater must be connected only to its rated voltage.
▪
The metal braid of the heater must be connected to a suitable earthing terminal.
▪
Check the resistance according to the technical data.
▪
Perform an insulation test before start-up.
▪
Electrical security and safety measures are to be provided on site.