PH-20/PHX-20 Manual
25
SHUT-DOWN
Follow the recommended procedure in the indicated order for Proportioner temporary shut-
down such as lunch breaks.
1. Set Pump Switch [Y, page 12] to OFF position.
2. Turn each Heater OFF. Hose Heater should remain ON. Never leave Proportioner
ON if unattended.
3. CLOSE Spray Gun Manual Valves.
CAUTION! Excessive force opening or closing the Manual Valves may result
in damage to the Manual Valves and/or Coupling Block.
Follow the recommended procedure in the indicated order for Proportioner shut-down when
work is stopped for the day.
1. Set the Pump Switch [Y, page 12] to RETRACT.
2. Spray off the application surface until Material Pressure Gauges [H, K, page 9]
readings begin to fall.
CAUTION! To avoid possible Proportioning Pump Seal weepage, and
moisture vapor drive into the Heated Hoses, the system pressure should not
be reduced to zero. It is recommended to lower the system pressure to a
minimum of 400 psi.
3. CLOSE the Spray Gun Coupling Block Manual Valves.
CAUTION! Excessive force opening or closing the Manual Valves may result
in damage to the Manual Valves and/or Coupling Block.
4. Turn OFF Motor Power [P, page 12].
4. Turn OFF the A and R Heaters and Hose Heater [S, page 12].
5. Turn OFF the Control Power [R, page 12].
6. Turn OFF the Auto Shut down switch [V, page 12].
7. Turn OFF the Main Power [P, page 12].
8. Apply grease to the “A” side grease fitting located on the pumps packing retainer.
9. Disconnect the air supply to the two Transfer Pumps and CLOSE the Proportioner
Material Inlet Valves.
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