VALCO MELTON D4, Manual

Page: 27 / 253

MM147 - D4 Hot Melt Unit Section 4 - Installation
27
Connecting the Hoses
WARNING! Never disconnect the hot melt hoses from a running unit. Hot melt is under high pressure.
Turn off the pump, shut off power to the unit, and actuate the gun to relieve residual pressure
before removing the hose. Failure to observe could result in personal injury, death, or
damage to equipment.
CAUTION! Do not operate the unit with the fluid outlet ports open to the air. Failure to observe could
result in personal injury, death, or damage to equipment.
When routing and installing heated hoses, follow these guidelines:
•
Avoid creating sharp corners and edges.
•
Do not bend hoses sharper than 18" (460 mm) radius.
•
Do not group heated hoses so that they contact one another.
•
Avoid positioning hoses where they can be stepped on or have a chance of being crushed or cut.
•
Avoid the use of unnecessarily long hoses where the hose is looped or curled on the floor. Excess
twisting of the hose can cause irreparable damage to it.
•
Maintain separation between hoses to avoid hot spots.
To connect the hot melt hoses to the unit, follow these steps:
1. Using a pair of wrenches, one on the fluid outlet fitting and the other on the fluid cap, remove the
protective caps from the fluid outlet fittings.
2. Ensure that the fluid outlet fitting is tight into the machine.
3. Ensure that the fluid outlet ports are clean.
4. Select the end of the glue hose that has the lead assembly with the male electrical connector
(Figure 4-1).
Figure 4-1. Hot Melt Hose
End of glue hose that
connects to fluid fitting
on applicator
Unit connection
Gun connection
End of glue hose that connects
to fluid fitting on unit