Precor 9.31 User Manual

9.31, 9.33, 9.35 Treadmill
Page 1
9.31, 9.33, 9.35 Treadmill
Warning: This service manual is for use by Precor trained service providers only.
If you are not a Precor Trained Servicer, you must not attempt to service any Precor Product;
Call your dealer for service.
This document contains information required to perform the majority of troubleshooting, and
replacement procedures required to repair and maintain this product.
This document contains general product information, software diagnostic procedures (when
available), preventative maintenance procedures, inspection and adjustment procedures,
troubleshooting procedures, replacement procedures and electrical block and wiring diagrams.
To move directly to a procedure, click the appropriate procedure in the bookmark section to the
left of this page. You may “drag” the separator bar between this page and the bookmark section
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© 2007 Precor Incorporated
Unauthorized Reproduction and Distribution Prohibited By Law
20081-116

Precor 9.31 Specifications

Power and Motor

motor power	2.75 hp
power requirements	120 VAC (50/60Hz) 15 Amps
speed range	0.5 - 11 mph (1 - 18 kph)
incline range	0 - 15% grade

Weight and Dimensions

length	79 in (201 cm)
width	34 in (84 cm)
height	55 in (140 cm)
weight	285 lbs (130 kg)
shipping weight	350 lbs (159 kg)
belt size	57 in x 20 in (145 cm x 51 cm)

Summary

Section One - Things You Should Know

Troubleshooting Procedures

Details procedures to isolate and resolve component-specific problems.

Replacement Procedures

Provides step-by-step guidance for replacing treadmill components.

Section Four - Inspection and Adjustment Procedures

Calibrating the Lift Motor

Step-by-step guide to calibrate the treadmill's lift motor.

Section Five - Troubleshooting Procedures

Troubleshooting Keypad and Upper PCA

Addresses issues with unresponsive console keys or the upper PCA.

Troubleshooting the Lift System

Guides on diagnosing and resolving problems with the treadmill's lift system.

Troubleshooting the Speed Sensor

Covers diagnosing issues related to the treadmill speed sensor.

Troubleshooting External A.C. Power Source

Provides steps for checking the external AC power source for treadmill operation.

Troubleshooting Heart Rate System

Running Belt & Deck Troubleshooting

Section Six - Replacement Procedures

Replacing the Lift Motor

Provides instructions for replacing the treadmill's lift motor.

Replacing the Lift Platform

Replacing the Lower PCA

Instructions for replacing the lower Printed Circuit Assembly (PCA).

Replacing the Speed Sensor

Covers the procedure for replacing the treadmill's speed sensor.

Replacing the Drive Motor

Replacing the Circuit Breaker

Replacing the Line Filter

Replacing the A.C. Input Module

Replacing Drive Motor Brushes

Drive Roller Replacement

Take Up Roller Replacement

Running Belt and/or Deck Replacement

Replacing Drive Motor Brushes (McMillan Motor Only)