Model H-2000/H-3500 Proportioning Unit
22 159421A-1, Issue 2
Figure 15. Directional Indicator Lights & Reversing Switch Rocker Arm
12.
The proportioning unit is now ready for operation. Connect air to the gun.
Following instructions in the gun manual, test spray.
Daily Shutdown Procedures
1.
Set the pump switch to the RETRACT position.
2.
Trigger the gun off target until the Isocyanate proportioning pump stops in the
retracted position and the proportioning pump pressures bleed off to a point where
the spray pattern begins to diminish. It is
NOT
a good practice to bleed the pressure
to zero. Some pressure is required to keep the packings operating normally and
prevent weepage during shutdown.
3.
Switch OFF the motor control.
4.
Switch OFF the Hose Heater and Primary Heater Circuit Breakers.
5.
Switch OFF the main circuit breaker.
6.
Close both Inlet Supply Valves.
7.
SUPPLY - shut down the supply system as required.
8.
GUN - shut down and service the gun as stated in the gun service manual.
To Next Page
Loading...
