101176 REV E
19
Water Temperature Control
WATER TEMPERATURE CONTROL
There are three devices that control the operation of the heater in the Stryker T/Pump:
•
The temperature is thermistor controlled (Figure 8, item 8). This temperature is selectable from the
operator’s keypad (Figure 8, item 10). To prevent unauthorized temperature setting changes, a lockout
key is available on the TP700 / TP702 “Professional” model.
•
The limit thermostat (Figure 8, item 2) is mounted on the brass manifold block (figure 8, item 6).
This thermostat senses water temperature flowing to the pad and will shut off the heater if the water
temperature exceeds specific limits (120ºF). The purpose of the limit thermostat is to prevent the pump
from providing water at too high a temperature to the pad.
•
The control of the selected temperature is performed by a dual thermistor (Figure 8, item 1) Dual
Processor design. The Control Processor reads its thermistor and determines if heat is required. If heat
is required it sends a signal to an Over Temperature Processor. The Over Temperature Processor reads
its thermistor, and insures the temperature is below the over temperature value, before it allows the
heater (Figure 8, item 5) to turn on.
FLUID SYSTEM
The pump is a sump configuration magnetically coupled to an impedance protected, shaded pole AC Motor (Figure 8,
item 3).
The return hose fitting (Figure 8, item 7) is machined internally to act as an orifice. This maintains a back pressure in
the pad to make it resistant to flow restrictions.
