The water reservoir is used for filling and draining the water phantom, storage of the water while the phantom is not in use, and for TPR/TMR measurements. The carriage of the water reservoir is provided with two fixed and two steerable rollers with parking brakes.
The water reservoir can be used stand-alone or connected to the CCU-X connection box. If connected to the water phantom, the hand control of the water reservoir is not needed for operation; the connection is hardcoded and fits in one direction only (Section 3.1.1 and Section 3.5).
outlet for water hose; 3: Pump control (connect to
water phantom); 4: Hand control; 5: Parking brakes
Hand control buttons for Water Reservoir:
Fill button to fill the phantom
Stop button to stop the pump
Drain button to empty the phantom
Using the Water Reservoir
The water reservoir is equipped with a bidirectional DC water pump and an electromagnetic valve to prevent water leakage in case of hose failure or from water flowing back into the water reservoir during measurements, while the hose is connected to the phantom.
If the pump has been in operation for more than 15 minutes without interruption, it will automatically be switched off, and the red LED above the Fill or Drain button will flash. To release the water reservoir and continue the operation, press the Stop button.
If the Fill button is pressed the first time after the water reservoir has been connected to the mains outlet, there is an initial waiting time of approximately 15 seconds. During this time, the electromagnetic valve is opened in order to remove the air between the pump and the electromagnetic valve. The red LED above the Fill button flashes during this time. This procedure can be interrupted by either interrupting the mains connection or by pressing all buttons simultaneously (soft reset).
The pump can be locked by pressing the Stop button for more than 2 seconds. In this condition, neither manual nor SW controlled operation is possible. The LED above the Stop button flashes. You can release the water reservoir by pressing the Stop button once or by interrupting the mains connection.
The electronic control incorporates a verification of the temperature. Over temperature is indicated by a fast flashing LED (5 Hz) above the Stop button. In case of over temperature, the water reservoir is locked until the temperature decreased sufficiently. This locking condition cannot be released by the user, even not by interrupting the mains connection.
IMPORTANT NOTICE: EXTERNAL PUMP CONTROL
The water reservoir pump can also be operated via the control panel of myQA Accept and with the corresponding CCU-X remote control menu.
Hand Control LEDs
The Fill /Drain button has a red LED above, while the Stop button has a green LED.
- During filling / draining, the corresponding red LED is on.
- When filling / draining stops, the green LED of the Stop button is on.
- The green LED is slow-blinking (long period-on and short period-off pattern) if the pump is at standby mode, TMR is in use, or the pump is controlled by the CCU-X hand control.
- The green LED is fast-blinking (~5 Hz) if error (e.g., over temperature, fuse is blow out) occurs. If the error is removed, it can be reset by press the Stop button once.
IMPORTANT NOTICE: EXTERNAL PUMP CONTROL
The water reservoir pumping can also be operated via the control panel of myQA Accept and with the corresponding CCU-X remote control menu.
CAUTION: DRY PUMP
Do not run the pump dry for more than 5 minutes.
Information About Water to be Used
Using demineralized (or de-ionized) water: Demineralized water has had minerals (e.g., lime) formed, but it still contains chlorine. Please note, demineralized water fosters the growth of algae (plants) and is therefore not recommended.
Using distilled water: Distilled water has little to no traces of slats, organic compounds, and microorganisms. It is recommended to use distilled water in the water phantom.
CAUTION: DO NOT USE TAP WATER
Do not use tap water with the device. Using tap water might damage the device, potentially leading to inaccurate measurements and patient harm.
Use distilled or deionized water.
CAUTION: ABOUT ADDITIVES
Do not add corrosive additives such as oxidant reagent, acid and base to the water. It may corrode the metal parts soaked in the water.