Hale MG - Manual (Page 29)

Muscle Pumps
1-22
Cooling Options
Model K Auxiliary Heat Exchanger/Cooler
NFPA 1901 requires a supplementary heat
exchanger cooling system for the pump drive
engine during pumping operations. Hale model
“K” heat exchangers, figure 1-20, meet NFPA
1901 requirements. The units can be used with any
size radiator and use water from the pump to help
maintain the proper temperature of the engine
coolant during pumping. The cast-iron housing and
copper-tubing coil keeps the water and coolant
from contaminating each other. A valve is
normally supplied on the operator’s panel to allow
the operator to control the amount of water
supplied to the model “K” heat exchanger.