Prochem Apex GTX - Manual (Page 32)

30
Operations
Water Pumping And Heat Transfer System
Cold water enters the console through the water inlet.
When the water box is full the valve will automatically
shut off.
Water then flows from the water box, through the
strainer, into the solution pump. The water is pumped to
the pressure regulator manifold, which provides and
maintains the desired pressure setting.
The pressure regulator manifold includes a pulse hose
which helps reduce pressure spikes from the pump.
A certain amount of water is by-passed from the
pressure regulator due to over pumping capacity of the
solution pump. Water that is not called for in the
cleaning process is channeled through a copper heater
core in the front of the heat exchanger box. This bypass
water circulates several times through the heater core
pre-warming the water.
The next stage of heating and water flow is to the
helicoil. When water is called for in the cleaning
process it flows to the helicoil under pressure. Heat
from the engine coolant is exchanged to the cleaning
water through a series of spiraled copper tubing. This
allows the engine coolant to travel in a counter rotating
direction to the cleaning water during the exchange
process creating a very efficient transfer of heat out of
the engine and into the cleaning water.
The third stage of plumbing and heat exchange takes
place in the 2nd and 3rd heater cores located in the
heat exchanger box. This is the hottest point of the
gases coming from the vac pump and the engine
exhaust. These hot gases are forced through the
heater cores creating the third stage of heat transfer to
the cleaning water.
Finally, the cleaning water passes to the solution outlet
manifold where cleaning chemicals are injected from
the chemical pulse pump. This manifold serves as a
temperature sensing point and a connecting point for
the solution hoses. Also a check valve is located in this
outlet manifold prohibiting chemicals from backing up
into the system.
The cleaning solution then passes through high
pressure solution hoses and is distributed by the
cleaning tool to a surface that is being cleaned,
completing the water pumping and heating cycle of the
cleaning unit.
86341750 APEX GTX