Sunrise Medical wheelchair Z-500 - Manual (Page 24)

930578 Rev. B
X I I . M a i n t e n a n c e 47 X I I . M a i n t e n a n c e
930578 Rev. B
46
G. MOTOR BRUSHES
Check the motor brushes every four (4) months for wear. The brushes should be clean
and shiny. Replace worn or blackened brushes.
H. ORDERING PARTS
When you order parts, provide the following:
1. Model of chair
2. Serial number of chair
3. Left hand or right hand control
4. Part number, description and quantity of parts you need.
5. State reason for replacement.
I. MAINTENANCE CHART
You should check the items on this chart at the indicated intervals. If any of the items
are loose, worn, bent or distorted, immediately have them checked and/or repaired by
your authorized Sunrise supplier. Frequent maintenance and servicing will improve per-
formance, extend wheelchair life, and help prevent injuries.
Charge Batteries
Check tires for proper inflation level
Check batteries for proper electrolyte level (wet only)
Check plugs and connectors for proper connections
Check all moving parts for wear
Inspect all nuts, bolts and fasteners for looseness or wear
Inspect upholstery for wear
Remove and inspect motor brushes
Servicing by authorized Supplier
CHECK...
✓
✓
✓
✓
✓
✓
✓
✓
✓
Quar
terly
Annually Monthly W
eekly Daily
3. CAUTION– To prevent tire damage:
•Use a hand pump (or a low volume air pump)
to inflate tires.
•Use a tire gauge to check pressure.
F. TO REPAIR OR REPLACE A TIRE
Residual air pressure in tires can cause severe
injury. Make sure you release all air in tire
before attempting to service or repair tires.
1. 8" Caster Wheels:
a. Release all air from tire.
b. Remove caster wheel from fork.
c. Make sure there is no residual air in tire before
you remove bolts that hold the two rim halves
together.
d. Remove four bolts from rim. Separate two halves
of rim.
e. Repair or replace inner tube.
f. Reassemble the caster wheel; make sure the
bearing spacer is in place and all four bolts are
secure.
NOTE– Use a torque setting of 240 inch-pounds
when tightening bolts.
g. Mount caster wheel onto fork. Install washers
correctly.
h. Inflate tire to proper pressure level.
2. 12" Drive Wheels:
a. Elevate and securely support chair so that wheel
is off the ground. Release all air from tire.
b. Remove plastic dome plug.
c. Remove lock nut and tab washer.
d. Remove wheel.
e. Repair or replace inner tube.
f. Install wheel on chair by replacing center tab
washer and lock nut. Use a torque setting of
420 in/lbs. to re-tighten nut. Bend washer tabs
up to secure nut and install plastic dome plug.
g. Inflate tire to proper pressure level (listed on
tire sidewall).