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Maintaining the EFX
CAUTION: Turn OFF the EFX and disconnect
the power cord before performing any
maintenance tasks.
The EFX requires little maintenance to keep it running smoothly and efficiently. However, the
customer is responsible for the typical maintenance tasks such as, cleaning the unit. If you fail to
maintain the EFX as described below, it could affect or void the Precor limited warranty.

Cleaning the Equipment

Your Precor EFX relies on low friction for efficient operation. To keep the friction low, the unit must
be as clean as possible. Before a workout, use a damp, soft, clean cloth and wipe along the inside
portion of the ramps. This helps remove any dirt or dust that might affect the smooth operation of
the ramp rollers. Vacuum the floor around and underneath the unit every week to prevent the
accumulation of dust and dirt.
To periodically clean the frame, electronic console, and foot pedals use a solution of mild soap and
water and dampen a clean cloth. To clean the grooves on the foot pedals, use a soft nylon scrub
brush. Never pour water or spray liquids on any part of the EFX. Allow the unit to dry completely
before using it.
The Precor Heart Rate Option requires little maintenance beyond keeping it dust free and cleaning
the chest strap with mild soap and water. Use a damp sponge or soft cloth to clean the chest strap.
Dry the surface thoroughly with a clean towel. Do not use an abrasive cleaner on the strap.

Changing the Battery in the Chest Strap

Some Precor Heart Rate Option’s chest straps come equipped with a battery. Others are the
disposable variety. If you have a battery-type chest strap, the signs that the battery is low and
needs to be replaced include:
• erratic heart rate display • no heart rate display appears
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CAUTION: Do not immerse any part of the
chest strap. Do not spray or pour liquids on
any part of the equipment.
To replace the battery, take the following steps:
1. Use a quarter or flathead screwdriver to open the battery case located between the two
electrode strips on the chest strap. See Diagram 14. Set the battery cover aside.
2. Replace the old battery with a fresh one. Make sure that the positive (+) side is up facing you.
3. Screw the battery cover back into place.
4. Test the battery by putting on the chest strap as described in
Wearing the Chest Strap
Transmitter
. Stand within 3 feet and face the electronic console. (Be sure that the EFX5.21s is
turned ON). If the battery has been installed properly, your heart rate should appear on the
display when you begin a workout program.
Diagram 14
Changing the battery.
Battery case