Invacare Pronto M91 Service Manual

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Pronto® M91™and M94™ 34 Part No. 1125038
FIGURE 3.1 Field Load Test
Motor Testing
NOTE:Forthisprocedure,refertoFIGURE 3.2.
1. Onthe4‐pinmotorconnector,locatethetwocontactsintheredandblackhousings.
2. Setthedigitalmultimetertomeasureohms(Ω).
3. Measuretheresistancebetweenthetwomotorcontacts.
NOTE:Anormalreadingisbetween0.2and5ohms.Areadingof0ohmsorinexcessof15ohms
indicatesaproblem.Highreadingsaregenerallycausedbybadconnectionsand/ordamaged
brushes.ContactInvacare.
FIGURE 3.2 Motor Testing
Charger Port
Digital
Voltmeter
BATTERY
QUALITY
0 to 2 volts Good
2 to 2.5 volts Poor
2.5 or more Bad
Black
Black
Black
Red
4 Pin Motor
Connector
Motor
Cap
4 Pin Motor Connector
Motor
Cap
MKIV 4-pin Motor Connector MK
5
& MK6i 4-pin Motor Connector

Invacare Pronto M91 Specifications

Power and Performance

maximum speed	6.5 mph / 4.5 mph
incline capability	9˚
weight capacity	300 lb. (400 lb. option)

Wheel and Caster Sizes

front casters	6" x 2"
drive wheels	14" x 3"
rear casters	6" x 2"

Weight and Dimensions

length with footboard up	39"
length with footboard down	40" - 42"
width excluding joystick	25.9"
height	37" - 48"
seat width	18" - 22"
seat depth	16" - 20"
overall height	37" - 40"
back height	18"
seat-to-floor height	21" - 23"
weight with batteries	273 lb.
weight without batteries	199 lb.
wheelchair mass	275 lb.
turning radius front	19.5"
turning radius rear	21.5"
ground clearance	3.25"