POLYURETHANE
MACHINERY
CORPORATION
PH-2 SERVICE MANUAL
11. SHUT-DOWN
11 SHUT-DOWN
11.1 SHORT-TERM
Follow the procedure below for temporary shut-downs, such as lunch breaks:
1. Set Pump Switch (See Figure 6 on page 15) to the OFF position.
2. Turn both “A” and “R” Heaters 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.
11.2 LONG-TERM
Follow the procedure below for shut-downs when work is stopped for the day:
1. Set Pump Switch (See Figure 6 on page 15) to the RETRACT position.
2. Spray off the application surface until Material Pressure Gauges (See Figure 4 on page
12) readings begin to fall.
CAUTION! To avoid possible Proportioning Pump Seal weepage,
and moisture vapor drive into the Heated Hoses, the system pres-
sure should not be reduced to zero. It is recommended to lower
the system pressure to a minimum of 400 psi (28 bar).
3. CLOSE the Spray Gun Coupling Block Manual Valves.
4. Turn OFF Motor Power (See Figure 6 on page 15).
5. Turn OFF the A and R Heaters and Hose Heater (See Figure 6 on page 15).
6. Turn OFF the Control Power (See Figure 6 on page 15).
7. Turn OFF the Auto Shut Down Switch (See Figure 6 on page 15).
8. Turn OFF the Main Power (See Figure 6 on page 15).
9. Disconnect the air supply to the two Transfer Pumps and CLOSE the Proportioner
Material Inlet Valves.
CAUTION! Excessive force opening or closing the Manual Valves
may result in damage to the Manual Valves and/or Coupling Block.
REVISION 1.2 31
To Next Page
Loading...
