Kärcher PROCHEM Peak GTX2, Operating Instructions Manual

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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 third stage of plumbing and heat exchange takes
place in the 2nd and 3rd heater core located in the heat
exchanger box. This is the hottest point of the gases
coming from the vacuum pump and the engine
exhaust. These hot gases are forced through heater
core #2 and #3 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 the temperature control
valve allows cooler water to enter the system for
temperature sensitive upholstery applications. A check
valve is located in this outlet manifold prohibiting
chemicals from backing up into the system. Two
connecting points for the high-pressure hoses are
located at the end of the manifold.
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.
Pump damage can occur if it is “thermal shocked.”
This may happen if the pump has run without the
water supply turned on, allowing the pump to
become overheated, and then turning on the water
supply which sends fresh cool water to the pump
without having a sufficient cool down period.
Thermal shock typically ruins the seals and cracks
the ceramic plungers.
La pompe risque de subir des dommages si elle est
subi un « choc thermique ». Cela risque de se
produire si la pompe a fonctionné alors que
l'alimentation en eau était fermée, causant ainsi
une surchauffe de la pompe, puis en ouvrant
ensuite l'alimentation en eau qui envoie de l'eau
froide vers la pompe sans avoir d'abord laisser
refroidir la pompe. Généralement, un choc
thermique endommage les joints d'étanchéité et
fissure les plongeurs en céramique.
86411120 Manual Operators - Peak GTX2 Prochem