VALCO MELTON D-90, Руководство пользователя

Страница: 98 / 150

8-2 Valco Cincinnati, Inc.
Section 8 - Troubleshooting and Repair MM125 - D-90 Hot Melt Unit
Troubleshooting - Continued
Problem Possible Cause Possible Solution
Adhesive pressure is too high Pressure relief valve set too high
Loosen the pressure relief valve
adjustment screw until the desired
pressure is obtained. Replace pressure
relief valve.
No adhesive output
Adhesive not hot enough
Check temperature setting is correct.
Ensure that platen and manifold heaters
have power. Check for blow fuses.
Pump not moving
Check system for ready condition. Check
blown fuse.
Filter Clean or replace filter.
Cold glue hose or damaged
hosed
Replace hose.
Cold applicator
Check for blown fuse and/or defective
heater.
Clogged applicator Service applicator system.
Temperature control malfunction Replace temperature control.
Fuming or smoking of adhesive
Operating temperature exceed
adhesive’s recommended
temperature Keep setpoint temperature within
recommended range.
Consider another adhesive.
Uneven flow of adhesive to
applicators
Adhesive viscosity is too high
Castings and/or manifold
temperature too low
Raise castings and/or manifold
temperatures in accordance with adhesive
manufacturer’s specifications.
-Wrong adhesive
See adhesive manufacturer’s
recommendations.
Adhesive overheated
Reduce castings and manifold
temperatures in accordance with adhesive
manufacturer’s specifications.
Glue hoses not at the same
temperature
Check temperature setting in the control.
Different pressure drop through
each hose
-Hoses not the same length Use same length hoses.
-Crimped hose(s) Replace hose(s).
-Leaking hose(s) Replace hose(s).
Adhesive supply low Change drum.
Manifold partially clogged Clean and flush system.
Nozzles partially clogged
Inspect system for charred adhesive and
foreign matter. Clean and flush system.