Nordson VersaBlue VA - Safety Valve; Changing Type of Material; Purging with Cleaning Agent

Fig. 5‐15
X
Fig. 5‐16
Maintenance
5‐20
P/N 213828_11
 2014 Nordson Corporation
VersaBlue_PPA
Safety Valve
Activate the safety valve piston. This prevents the material from blocking the
safety valve.
Procedure:
1. Relieve pressure as described in section Installation.
2. Disconnect all hoses.
3. Close the hose connections with Nordson port plugs (Fig. 5‐15).
4. Mechanical pressure control valves: Measure the insertion depth (Fig.
5‐16): of setting screw (dimension X) and make a note. This ensures that
the insertion depth can be reproduced. Then close pressure control
valve.
Pneumatic pressure control valves: Set the compressed air supply to
6 bar.
5. Operate the melter at full motor speed and with hose connections closed.
Switch the motor on and off several times.
Changing Type of Material
1. Run the melter until empty.
2. Before changing the type of material, determine whether the old and new
material may be mixed.
 May be mixed: Remaining old material can be flushed out using the new
material.
 May not be mixed: Thoroughly purge the unit with a cleaning agent
recommended by the material supplier.
NOTE: Properly dispose of the old material according to local regulations.
Purging with Cleaning Agent
CAUTION: Use only a cleaning agent recommended by the hot melt material
manufacturer. Observe the Material Safety Data Sheet for the cleaning
agent.
Cleaning agent residue can be flushed out of the melter with new material
before production begins again.
NOTE: Properly dispose of the cleaning agent according to local
regulations.