Troubleshooting guide

Monark 831 E

Calibration of pendulum weight

Although all Ergometers are calibrated at the factory

the user may wish to verify this by performing a

mechanical scale calibration. If so, please do the

following.

Remove the cover from the ﬂywheel. Loosen the

balancing spring from the brake belt. Check that the

0-index of the scale is in line with the index of the

pendulum weight. Adjust if needed. Note: Wait until

the ﬂywheel is not moving any longer.

Connect a known weight, e.g. 4 kg (Art. No: 9000-

221) where the balancing spring was placed. Note:

The weight should not be lighter than 3 kg, due to the

possibility of inferior accuracy.

When correctly set, it should be possible to read this

weight from the corresponding place on the meter

panel.

Should there be a deviation, adjust the pendulum

to the correct position on the scale by means of the

adjusting weight. In order to change the position of

the adjusting weight, loosen the lock screw(1) of the

weight.

Should the index of pendulum weight be too low,

move the adjusting weight(2) upwards into the weight.

Should the index be too high the adjusting weight is

moved downwards and locked in the new position.

This procedure is repeated until the correct reading

is achieved.

Check the calibration of the pendulum weight once a

year or when needed.

Assemble the front cover again.

Zero adjustment of meter panel

Move the pendulum to 4 kp and keep it there for

a few seconds. Check that the belt is loosened. If

adjustment is necessary, loosen ﬁrst the lock nut(3)

and then change the position of the meter panel(5),

so that the board will have its 0-index in line with

the index of the weight. Tighten the lock nut after the

adjustment.

Fig: Calibration

1) Lock screw

2) Adjusting weight

3) Lock nut

4) Brake belt

5) Meter panel

6) Weight