Emerson Copeland Scroll ZP23K Series, Инструкции по применению

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C6.2.19/0507-0708/E 5
difficult. The copper coated steel suction tube should be cleaned before brazing. No object, eg, a
swaging tool should be inserted deeper than 51 mm into the suction tube or it might damage the
suction screen and motor.
3.1.3 Installation location
Ensure the compressors are installed on a solid level base.
3.1.4 Mounting parts
Figure 4
Four vibration absorber grommets are supplied with each compressor. They dampen the start-up
surge of the compressor and minimise sound and vibration transmission to the compressor base
during operation. The metal sleeve inside is a guide designed to hold the grommet in place. It is
not designed as a load-bearing member, and application of excessive torque to the bolts can
crush the sleeve. Its inner diameter is approximately 8.5 mm to fit, eg, an M8 screw. The
mounting torque should be 13 ± 1 Nm. It is critically important that the grommet is not
compressed. A clearance space of approximately 2 mm between the bottom of the washer and
the top of the grommet spacer is recommended.
If the compressors are mounted in tandem or used in parallel, then the hard mountings (bolt M 9
5/16”) are recommended. The mounting torque should be 27 ± 1 Nm. It is possible to deliver
these hard mounting parts as a kit, or on request to deliver the compressor with these parts
instead of the rubber grommets.
3.2 Brazing procedure
IMPORTANT
Blockage! Compressor breakdown!
Maintain a flow of oxygen-free
nitrogen through the system at very low pressure during brazing. Nitrogen
displaces the air and prevents the formation of copper oxides in the system.
If allowed to form, the copper oxide material can later be swept through the
system and block screens such as those protecting capillary tubes, thermal
expansion valves, and accumulator oil return holes.
Contamination or moisture! Bearing failure!
Do not remove the plugs until
the compressor is set into the unit. This minimises any entry of contaminants
and moisture.
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Mounting Parts ZR250K* to ZR380K* and ZP235K* to ZP385K* - Soft Mountings
Mounting Clearance 2 mm
Mounting Parts ZR18K* to ZR190K* and ZP23K* to ZP182K* - Soft Mountings