Checking Locking Wheel Movements; Checking Laser Indicator - Whale MultiScan G-Arm System XGB6-12-1026 User Manual

Checking Locking Wheel Movements

9.4 Checking Locking Wheel Movements
The locking wheel movement of the Control Unit and the G-Arm shall be in-
spected by the end users every time before use for any potential movement
abnormalities.
WARNING
STEP 1
STEP 2
STEP 3
Should any abnormalities be observed during the above procedure, contact
the service personnel immediately.
9.5

Checking Laser Indicator

In order to make sure the laser indicator can accurately point to the expect-
ed irradiating zone of the X-ray beam center, it shall be inspected by the end
users each time before use.
The dot illuminated on the carbon fiber plate of the tube assembly by the la-
ser indicator shall coincide with the X-ray beam center of the corresponding
plane, with an error range ≤ ±6 mm.
To check whether the laser indicator is accurate:
STEP 1
STEP 2
STEP 3
STEP 4
If the light dot does not hit the target, namely the generated light dot lies
outside the pad, you need to have the laser light re-calibrated.
XGB6-12-1014, Rev 1.04
Before starting the test procedure, turn off the equipment. Observe the
working field to make sure the ground is flat and level and there are no
obstacles or small objects that can obstruct the locking wheel move-
ment.
Check the exterior conditions of all the locking wheels of the Con-
trol Unit or G-Arm. Make sure they are all intact and undamaged.
Raise the brake pedal on the Control Unit or G-Arm. Move the unit
by pushing or pulling the handles to see whether it can be moved
smoothly.
Press down the brake pedal to lock all the wheels on the Control
Unit or G-Arm. Try to move the unit by pushing or pulling the han-
dles to see whether it can stay still.
Keep the laser indicator off, and move the image intensifier to the
mid-point of travel distance.
On the carbon fiber plate of the tube assembly, attach a ø12 mm
pad to the center of the X-ray beam.
Initiate fluoroscopic imaging and adjust the pad position so that the
pad center coincide with the image center.
Switch on the laser indicator. See if the generated light dot lies in-
side the ø12 mm pad.
Chapter 9 - Maintenance
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