PMC MN-06001, Manual

Page: 23 / 66

PMCA-20
Manual
23
SHUT-DOWN
Follow the recommended procedure in the indicated order for Proportioner temporary shut-
down such as
lunch breaks.
1. Set Pump Switch to OFF position.
2. Turn the 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 to RETRACT.
2. Spray off the application surface until Material Pressure Gauges 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 (27.6 Bar)
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 the Heater and Hose Heater.
5. Turn OFF the Control Power.
6. Turn OFF the Main Power.
7. Disconnect the air supply to the two Transfer Pumps and CLOSE the Proportioner
Material Inlet Valves.