POLYURETHANE
MACHINERY
CORPORATION
PH-2 SERVICE MANUAL
5. DESCRIPTION
U. Totalizer
Indicates the number of pump cycles to calculate material usage.
Model Pressure Pump Size Cycles per Gal (3.79L)
PH-2 2,000PSI 123 27
V. Auto Shut Down Switch
Turns ON and OFF power to the Auto Shut Down unit.
W. Auto Shut Down Counter
Used to set the amount of cycles required to prevent the chemical drums from running
dry, the machine will shut down when the preset cycles expire. There is an on/off
switch to activate this feature or deactivate and not use it.
X. Motor Switch
Turns ON and OFF the Electric/Hydraulic Motor. When turned ON, the pilot will
light. In the event of an overload of the Motor, pilot light will turn OFF and Motor
will stop.
Y. Pressure Balance Control Knob
Used to set the maximum allowable pressure differential (in PSI) between the A (Iso)
and R (Poly) pumps. See page 25 for more information.
Z. Pressure Balance Control ”ON” Light
Indicates that the Pressure Balance Control system is on and functioning.
AA. Pressure Balance Control “FAULT” Light
Indicates that the pressure differential is equal to or greater than the maximum allow-
able pressure differential.
REVISION 1.2 16
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