8
C6.2.24/1014-0215/E
Mounting parts ZBD21K* to ZBD114K* & ZFD13K* to ZFD41K* - Soft mountings
Figure 6
3.2 Solenoid valves for models ZBD21K* to ZBD57K* and ZFD13KVE to
ZFD25KVE
IMPORTANT
The external solenoid valve is a critical component for proper function of this
compressor.
Only
the Copeland brand solenoid valve supplied as a
requested accessory must be used.
Care must be taken during the brazing process that no solid parts can enter the control piston
compartment or the solenoid valve tubing. To prevent solid parts from entering the control valve
seat, the solenoid valve kit contains a filter screen, which has to be placed into the horizontal
tube of the valve before brazing the tube connections as shown in
Figure 10
below.
The solenoid valve has to be fitted in such a way that the sleeve with the stem inside
–
which
supports the solenoid coil
–
is fixed and aligned in the upright position.
3.2.1 Securing the filter screen in position
The filter screen should be placed into the small tube running
at 90° to the solenoid valve stem. A narrow washer fixed on
the filter screen will sit on the end of the tube preventing it
falling inside (see photos). The tube running from the top
centre of the compressor down to the previous tube needs to
be swaged at the solenoid valve end so that it covers the filter screen/tube and is
then brazed into position.
Filter screen with washer
To solenoid valve
end From top o From compressor
Swaged tube
Swaged tube
Figure 7
Figure 8: Position of external solenoid v alv e Figure 9: Recommended piping