TMM Series Stretcher-Chairs
Trouble-Shooting Guide
TMM-SCTG
Page 6 of 12
Rev C - 072816
TALL (T) CHAIR IS NOT GOING TO FULL HEIGHT
1.
Tall lift columns have two (2) actuators inside the tower that function simultaneously to raise and
lower the stretcher-chair, however each actuator is controlled by individual ports on the control
box.
2.
First make note of which section of the column is not moving. This could be the lower section or the
upper section.
3.
Refer to the control box wiring diagrams by following this link: “
Control Box Wiring
”
4.
For KOM control boxes, switch the cords in ports #1 and #4. For VCU control boxes switch the
cords in ports #1 and #2.
5.
Use the pendant to raise and/or lower the chair.
6.
If the section of the column that was not functioning is now functioning, the problem is either in the
button on the pendant or the port in the control box. Call or email technical service for part number
and price.
7.
If the same section of the column is still not working and the chair has a KOM control box, then the
issue is likely in the column. Call or email technical service for part number and pricing. If the chair
has a VCU control box, then continue to step #8.
8.
VCU control boxes require adapter cables for the columns. One of these adapter cables may be
faulty, pinched, or severed. Inspect the cables for damage. See picture of cable below. Call or email
technical service for part number and price if cable is damaged.
9.
If the cables appear to be in good condition, switch the column cables in the adapter cables.
10.
If the same section of the column is not working, the issue is in the column. Call or email technical
service for part number and price.
11.
If the section of the column that was not functioning is now functioning, the problem is in the
adapter cable. Contact 0ur
Customer Service Department
for the appropriate part number and / or
pricing.
You may now continue troubleshooting your device or return to the
“
General Issues
”
page.
