308986
27
Operation
Pneumatic Startup (Cont”d)
13. Note pressures while spraying and material tem-
peratures if heaters are used. While triggering
dispense valve (S), check fluid outlet pressure
gauges (J2) and make note of pressures indicated.
Check the gauges frequently during operation.
Note material temperatures if heaters are used.
These notes will help to analyze any problems that
may occur. Change in displacement pump perfor-
mance will be indicated by change in pressure
gauge readings.
NOTE:
A quick pressure drop does occur during pump
stroke changeover, but should remain steady if the
dispense valve is not triggered. Pressure loss in a
static state indicates a packing or check valve leak and
should be repaired.
14. Flush mixer manifold (N) frequently during day’s
operation. Follow Step 11 on page 21.
Checking Mix Ratio
WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
follow the
Pressure Relief Procedure
on page 23 whenever you are instructed
to relieve the pressure.
NOTE:
Since this is a fixed ratio system, you typically
do not have to check the mix ratio.
If the mixed fluid does not cure or harden properly,
check the ratio of resin to hardener.
1.
Flush the mixer manifold; see Step 11, page 21.
2.
Follow the
Pressure Relief Procedure
, page 23.
3.
Open the mixer manifold (N), handle (KK) up.
4.
Set the operating pressure for the pumps. See
Steps NO TAG and NO TAG on page NO TAG.
5.
Release the dispensing valve trigger and engage
the safety latch.
6.
Close the mixer manifold (N), handle (KK) down.
7.
Open the hardener side drain valve (P2) about
three turns. Open the resin side drain valve (P1)
about 1 turn. This prevents the pressure from
building up on the hardener pump, which would
cause the automatic pressure relief valve to open.
8.
Place a grounded metal pail under the drain
valves.
9.
Open the mixer manifold.
Summary of Contents for HYDRA-CAT FIXED RATIO
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