Monark 939 E, Руководство пользователя

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Monark 939 E
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The 939 E is a mechanically weighted and braked
ergometer, making performance validation a simple
procedure. The work performed on the ergometer is
the product of the weight lifted times the numbers of
revolutions (factored). Validation includes both me-
chanical and electronic procedures. If the ergometer
fails to pass any section of the validation, proceed to
the calibration and/or service menu (99 in the main
menu).
Inspection of all mechanical components is suggested
after any repair, or component service. The following
validation should be performed annually:
Remove the cover from the flywheel. 1.
Loosen the brake belt at the balancing spring. 2.
Wait until the flywheel is no longer moving. 3.
The pendulum weight index should be aligned 4.
with “0“ on the scale.
Attach the calibration weight to the point at which
5.
the spring was attached.
The known weight should match the value on the
6.
scale. If not see section “Calibration of Pendulum
Weight “.
Reattach the tension belt.
7.
Reassemble the cover. 8.
Proceed to the validation to complete.
Calibration
Validation
The following procedure will assure the user that the
ergometer is performing properly on a daily basis.
The test exercises the mechanical braking, pedalling
and speed detecting systems as well as the computer
regulation and sensing capability of the mechanical
system.
Additionally, if a calibrated ECG simulator is avail-
able, it may be used to verify the heart rate measur-
ing system. Whether the simulator is used or not, the
heart rate system may be validated by simply taking a
pulse point rate measurement at the neck for example.
While a patient is at rest and has been prepared for
chest belt electrodes or an ear sensor, the pulse indi-
cator flashes once per pulse beat. The displayed rate,
should agree with the manually detected pulse rate. If
not, check the patient electrode connection and skin
preparation prior to requesting service.
Validation of force
From main menu go to any start display with Newtons
(N).
With the pendulum at zero, the display should 1.
read “ 0“.
Move the pendulum weight to the 4 kp position
2.
and the display should read “39“ Newtons.
Decrease the position of the weight by steps of 1 kp.
3.
The display should read correctly at all positions.
NB: The brake belt will become loose and because of
this it will take a few seconds before normal workload
is obtained the first time the ergometer is used.