Maintenance Schedule - Yale 524150797 Maintenance Manual

Maintenance Schedule

CAUTION
To avoid controller damage, always disconnect the
battery. Discharge the capacitor and never put
power to the controller with any power wire
disconnected. Never short any controller terminal
or motor terminal to battery. Make sure to use
proper procedures when servicing the controller.
1. Move the truck to a safe, level area. Turn the key
switch to the OFF position and disconnect the
battery.
2. Remove the drive unit compartment cover to
access the drive unit compartment.
3. Discharge the capacitor in the controller by
connecting a 200-ohm, 2-watt resistor across the
controllers B+ and B terminals using insulated
jumper wires. See Figure 4. DO NOT short across
the motor controller terminals with a screwdriver
or jumper wire.
The Maintenance Schedule is divided into three time
intervals which call for particular maintenance
procedures to be performed. The intervals are 1 Day
or 8 Hours, 2 Months or 350 Hours, and 1 Year or
2000 Hours for normal operation (whichever comes
first). Normal operation is considered one 8-hour shift
per day, in a relatively clean environment, on an
improved surface. Operating a lift truck for more than
6
1. CONTROLLER
2. POSITIVE CONNECTION
3. INSULATED JUMPER WIRES
4. 200-OHM, 2-WATT RESISTOR
5. NEGATIVE CONNECTION
Maintenance Schedule
eight hours per day is considered Heavy operation and
requires the 2-month/350-hour checks to be performed
at 1 month/200 hours. Lift trucks operating in freezer
environments or dirty conditions are considered
Severe operation and require the 2-month/350-hour
checks to be performed at 1 month/200 hours. The
approximate locations of the items listed in the
Maintenance Schedule are shown in Figure 5.
Figure 4. Discharging Capacitors
8000 YRM 1666