19
PROPORTIONER PURGING
WARNING! Use suitable Personal Protection Equipment
(PPE) and follow the recommendations in the Safety
Information provided by product suppliers when installing or
working with the unit.
NOTE! Before using the Proportioner it is necessary to purge the entire
system, including Heated Hoses of mineral oil and air left over from Quality
Control testing. The following procedure is also followed to purge air
entrapped by running out of material in the supply Drum/Reservoirs
resulting in a significant material pressure imbalance as indicated by the
Pressure Gauges and sprayed material.
1. Ensure the following before proceeding:
a. Air supply to Transfer Pumps is 90 - 110 psi (6-8 Bar).
b. Proportioner Inlet Valves are CLOSED.
c. All connections are tight.
d. Material should be stored to the material suppliers' recommended temperatures.
2. Slowly OPEN the Poly (R) Transfer Pump Air Shut-Off Valve allowing Pump to cycle
slowly as it fills the Material Delivery Hose to the Proportioner. Check for leaks.
3. OPEN Poly (R) Coupling Block Manual Valve over a waste container.
4. Slowly OPEN Proportioner Poly (R) Inlet Valve allowing the Transfer Pump to move
material through the system. When all air spitting stops and all traces of mineral oil have
disappeared, CLOSE Poly (R) Coupling Block Manual Valve. Clean Coupling Block.
5. Repeat steps 2 to 4 for Iso (A) side.
CAUTION! Properly dispose of all waste chemicals in accordance with
all applicable local, state and federal codes.
NOTE! Do not turn on the Count Down Counter.
6. Turn Hydraulic Pressure Control (N, page 10) full COUNTERCLOCKWISE.
7. Turn ON Main Power (Q, page 11). Green pilot will light.
8. Turn ON Control Power (S, page 11). Switch will light.
9. Turn ON Motor Power (W, page 12). Switch will light.
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