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• To conduct the electrical impulses from your heart, the chest strap’s electrodes require a
certain percentage of salts and minerals in the water used to wet them. The electrodes
continue to transmit your heart rate reading as long as they are in contact with your skin and
your skin is providing enough moisture through your perspiration to keep the electrodes wet.
However, if the concentration of salts in your perspiration is not high enough to conduct
electrical impulses and send them to the receiver, your heart rate reading will appear erratic or
not appear at all. Some people cannot use the heart rate feature because they do not have the
proper body chemistry.
• Do not use the chest strap if you are taking any medication or have a cardiac pacemaker.
Inaccurate heart rate readings can occur due to medication or electrical impulses from the
cardiac pacemaker.
• Stretching or bending the electrode strips on the chest strap may cause the strips to lose their
conductivity. Handle the chest strap with care.
• After extensive use, the chest strap (transmitter) may wear out, causing inaccurate heart rate
readings. With every use, check the strap for excessive wear and replace it or the battery if
necessary. See
Obtaining Service
on page 24.
Precor equipment is designed for your enjoyment. By following the above precautions and using
good common sense, you will have many safe and pleasurable hours of healthful exercise with
your Precor EFX.
Information Regarding Regulatory Requirements
FCC Federal Communications Commission, Part 15
The EFX5.21si has been tested and it complies with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
detrimental interference in a residential installation. The EFX generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the owner’s manual instruc-
tions, may cause harmful interference to radio communications. However, even with following the
owner’s manual instructions, there is no guarantee that interference will not occur in a particular
installation.
If the EFX does cause interference to radio or television reception, which can be determined by
pressing the power switch to 0 (OFF) and then I (ON), you are encouraged to try to correct the
interference using one or more of the following measures:
• Reorient or relocate the receiving antenna for your TV, radio, VCR, etc.
• Increase separation between the EFX and the receiver (TV, radio, etc.).
• Connect the EFX into a different power outlet—on a dedicated circuit different from the one
used by the receiver (TV, radio, etc.). No other appliance should be plugged into the same
power outlet that the unit is connected to.
• Consult your dealer or an experienced radio/TV technician for help.
CAUTION: Per the requirements of the Federal Communications Commission, changes or
modifications to this product, not expressly approved by Precor, could void the user’s authority
to operate the product.
Canadian Department of Communications
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioéélectriques dépassant les limites
applicables aux appareils numériques de la class B prescrites dans le Règlement sur le brouillage
radioélectrique édicté par le ministére des Communications du Canada.