TVC Ethos Two - 11.4. Maintenance Required

Page 70 of 102
TVL 351
ISSUE 15
11.4. Maintenance Required
The TVC Ethos Two Controller has been designed to require as little routine maintenance as possible. The
controller does however contain various mechanical parts that will require routine checking. The maintenance list
below is not definitive and should be used as a guide. Lift usage will play a major role in wear and maintenance. It is
the user’s responsibility to judge when various components require replacing. Note: Parts that are deemed as
serviceable are not covered under the controller guarantee.
Be aware that the lift panel will contain equipment that is supplied with potentially lethal
voltages. Please make sure the panel is isolated before carrying out any maintenance
work.
1 Month After Installation:
Ensure all the screw connections on all terminals are tight; this includes the mains terminals, motor terminals and
connections to relays and electronic modules.
Every Month:
Clean cooling fans in the panel and drive system, ensure the filters are free of dust and dirt, replace if necessary.
Every 6 months:
Ensure all the screw connections on all terminals are tight; this includes the mains terminals, motor terminals and
connections to relays and electronic modules.
Vacuum out panel and clean any dust / contamination from the covers of modules / drives / relays etc. (depending
on the environment, this may be required more frequently.)
Note: Most electronic components will contain static sensitive devices and should not be touched unless you have
the required protection.
For traction lifts: Ensure volt drop across each contact in the brake circuit is below 10% of the brake voltage. Also
ensure total drop across the whole circuit is less than 10%. Contacts may include BKR, STR, MC1, MCR. Check
wiring diagram for details, replace if necessary.
Every Year:
Check batteries in Battery backup / UPS circuits and Emergency lighting. Replace if recommended by manufacturer
or if the batteries aren’t holding charge.
Check Limax head unit for wear in the tape guide shoes, if fitted.
Check mechanical fixings of any encoders on the motor and shaft encoder systems.
Every 5 Years or less (dependent on usage):
Replace contactors and relays in the brake circuit.
Contactor / Relay Date Changed Engineer Reason
Every 10 Years:
If a Drive is fitted change the DC Bus Capacitors.