Repair
313540L
29
Flushing
•
Flush out old fluid with new fluid, or flush out old
fluid with a compatible solvent before introducing
new fluid.
•
Use the lowest possible pressure when flushing.
•
All fluid components are compatible with common
solvents. Use only moisture-free solvents.
•
To flush feed hoses, pumps, and heaters separately
from heated hoses, set PRESSURE
RELIEF/SPRAY valves (SA, SB) to PRESSURE
RELIEF/CIRCULATION
. Flush through bleed
lines (N).
•
To flush entire system, circulate through gun fluid
manifold (with manifold removed from gun).
•
To prevent moisture from reacting with isocyanate,
always leave the system dry or filled with a mois-
ture-free plasticizer or oil. Do not use water.
Proportioning Pumps
NOTE: See manual 313485 for pump repair instruc-
tions.
1. Shut
off , ,
and
heat
zones.
2. Flush, page 29.
3. If pumps are not parked, press
. Trigger gun
until pumps stop.
4. Turn main power OFF
. Disconnect power
supply.
Flush equipment only in a well-ventilated area. Do not
spray flammable fluids. Do not turn on heaters while
flushing with flammable solvents.
SA
SB
ti9880a
N
N
To avoid injury and damage to pump arms and ratio
adjustment screws, relieve all pressure and shut off all
power before repairing proportioning pumps.
5. Shut off both feed pumps. Close both fluid inlet ball
valves (B).
A
B
ti10971a
B
Summary of Contents for Reactor H-VR
Page 69: ...Notes 313540L 69 Notes ...