Precor EFX546 Service Manual download pdf (Page 2)

C546 Self Powered Elliptical Fitness Crosstrainer

Page 2

Section One - Things You Should Know

Right, Left, Front, and Back Conventions

In this manual, right, left, front, and back are from the perspective of a user standing on the C546,

facing the display enclosure.

General System Information

• The ramp operating system has a battery monitoring system. If the battery voltage falls

below 11 Vdc when ramp movement is initiated or the battery voltage falls below 10 Vdc

after ramp movement has been initiated, ramp movement will be stopped and the message

“NO RAMP LOW VOLTAGE” will be displayed. Ramp motion will not be enabled until such

time as the battery voltage exceeds the above limits.

• The generator performs three functions in the EFX. First, by controlling the amount of

electrical load applied to the generator, the user’s pedalling resistance is controlled.

Second, the generator is used to charge the EFX’s internal battery. Lastly, one of the

generators three phase output windings is monitored to determine when the unit is in use

and when it is idle. This system also determines the stride rate by determining the operating

speed (output frequency) of the monitored generator winding.

Warning and Caution Statements and General Safety Guidelines

Warning statements indicate a particularly dangerous activity. Warning statements you will find in

this manual include:

• If the EFX has been in recent use, the load resistors and load resistor mounting bracket may

be extremely hot.

• Because this is a self powered unit, it will either be necessary to either equip the unit with

the optional external power supply or have an assistant pedal on the unit while voltage

measurements are being taken. Because of the danger of working on the unit while it is in

motion using the optional external power supply is strongly recommended.

• When the unit is used, stairarms are in motion, the generator will operate and produce

potentially hazardous voltages even when the battery is disconnected.

• To remove power from the EFX, the optional external power supply (when equipped) must

be disconnected from the wall outlet and the red (positive) lead must be disconnected from

the battery. Always ensure that the EFX external power supply is unplugged from the wall

outlet and the red (positive) lead is removed from the battery when you inspect or adjust the

EFX, or when you isolate, remove, or replace an EFX component.

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Precor EFX546 Service Manual Page 2