GLASCRAFT Guardian A5-6000 IP, Руководство пользователя

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A. MATERIAL DRUMS
1. Material in drums?
2. Material temperature?
a. If the material is to cold, especially at the
bottom of the drum, it will raise the viscosity of
the material and stall Transfer Pumps.
B. OPTIONAL TRANSFER PUMP(S)
1. Is it operating?
2. Is air turned on to Transfer Pump?
3. Regulated pressure where it should be?
4. Severe contamination of pump shaft on isocya-
nate side. This indicates that the pump shaft is not
being lubricated.
5. Check Filter of Transfer Pump.
6. Before diagnosing a faulty Transfer Pump, be sure
and check all items just listed under Transfer Pump.
C. FILTER ASSEMBLY
1. Check fluid filter at inlet to Proportioning Pumps
if applicable.
D . PROPORTIONING PUMPS
1. Determine whether the burst appears on the
Pump’s up or down stroke.
a. If burst appears on UP stroke, check UPPER
Ball Seat and Cups.
b. If burst appears on DOWN stroke, check
LOWER Ball Seat
Follow the procedures in the order given. Remember
that repairs should be made as soon as possible.
Don’t leave the unit open to air any longer than
necessary, as this will lead to further problems, such
as moisture entering the system and causing the
isocyanate to crystallize.
After the unit has been exposed to the atmosphere, it
should be run long enough to displace the material that
was in the unit when it was opened up.
NEVER inspect filter assemblies at time of shut-down!
4.
In troubleshooting, a restriction problem where the
material pressure gauge on the missing material
side is higher than normal, start at the point farthest
from the unit and work backward. Check obvious
and easy things first.
Before performing any repairs on the Gun, ALL AIR and
FLUID PRESSURES SHOULD BE RELIEVED TO
ZERO (BLEED-OFF)!
A. GUN
1. Side Block Material Valve turned on?
2. Bore hole of Mixing Chamber clean?
3. Filter Strainer Screen clean?
4. Side hole in Mixing Chamber clean?
B. MATERIAL TEMPERATURE
1. Too high a temperature on resin side can cause
a blowing agent to pre-expand in either the
Hose or the Primary Heater.
C. HOSES
1. Make sure that the Hoses are not plugged.
TROUBLESHOOTING A POOR SPRAY PATTERN
To troubleshoot a poor spray pattern, you must
understand the factors that affect the spray pattern.
A. TEMPERATURE
1. Too warm a material temperature will cause a
separation (fingering) in the pattern.
2. Too cold a material temperature will cause a
stream effect.
B. PRESSURE
1. Too high a pressure will cause excessive
overspray and/or separation (fingering).
2. Too low a pressure will cause a stream effect.
C. CONTAMINATION IN THE MIXING CHAMBER
1. A foreign object in the Mixing Chamber will
cause a poor pattern.
Correct problem(s) immediately!
Section 3 - General Information: Troubleshooting