Graco D, Эксплуатация, компоненты, обслуживание и ремонт, Страница: 16 / 34

Spray Pattern Adjustment
16 311320G
e. If buildup recurs shortly after cleaning
tip, remove air cap and ensure inside is
clean.
Reinstall air cap and ensure airflow is properly
set.
If no buildup occurred on air cap, check the fol-
lowing items in this order and readjust if neces-
sary:
• Check Valving Rod Adjustment
Screw/Sleeve setting.
• Check hose temperature setting.
• Check primary heater temperature setting.
• Ensure spray pressures between chemi-
cals are balanced. If they are not, refer to
Troubleshooting section of Proportioning
Unit Operation Manual for the proportioner
in use.
• Ensure flow of air to air cap is adequate but
not excessive.
Table 1: Valving Rod Adjustment for Standard Mixing Chambers
Chamber
Turns Out From Point of
Valving
Recommended
Distance of Gun
from Surface Pattern Size Minimum Maximum
46-800 1/2 turn 2 turns 12 in. (304-8 mm) 6 in. (152.4 mm)
46-810 1/2 turn 2 turns 12 in. (304-8 mm) 6 in. (152.4 mm)
55-776 1 3/4 turns 2 5/8 turns 18 to 20 in. (457.2
to 508 mm)
8 in. (203.2 to
228.6 mm)
62 2 turns 3 turns 18 to 20 in. (457.2
to 508 mm)
8 to 9 in. (203.2
to 228.6 mm)
70 2 turns 3 turns 18 to 20 in. (457.2
to 508 mm)
10 to 12 in. (254
to 304.8 mm)
78-851 2 turns 3 turns 24 in. (609.6 mm) 14 in. (355.6 mm)