Instruction manual

55
7-8 Relay Coil Resistance, K1, K2, K3
1) Main relay K3 coil resistance should be
approximately 310 ohms. Place the
ohmmeter test probes on the A1 and A2
screws of the K3 relay. Check the
resistance (Figure 717, shows 315 ohms,
OK). If the connnection is open or shorted,
replace the K3 relay {Code #60406 (110 V),
#60356 (220 V), Pos. 7}.
2) The DOWN relay, K2, coil resistance should
also be approximately 310 ohms. Place the
ohmeter test probes on the A1 and A2 screws
of the K2 relay. Check the resistance (Figure
718, shows 312 ohms, OK). If the
connection is open or shorted, replace the
UP/DOWN double relay {Code #60456
(110 V), #60466 (220 V) Pos. 8}.
3) The UP relay, K1, coil resistance should be
approximately 310 ohms. Place the
ohmmeter test probes on the A1 and A2
screws of the K3 relay. Check the
resistance (Figure 719, shows 305 ohms,
OK). If the connection is open or shorted,
replace the UP/DOWN double relay {Code
#60456 (110 V), #60466 (220 V) Pos. 8}.
7-9 Brake Coil Resistance Check
With the ohmmeter test probes placed on the
center two positive(+) and negative(-) terminals
of the brake rectifier U1, measure the resistance
(Figure 720, shows 333 ohms, OK). It should be
approximately 332 ohms. If the connection is
open or shorted, replace the brake coil .
7-10 Capacitor Checks
1) Discharge the capacitors by sliding the K1 or
K2, and K3 relays to the right with 2 insulated
screwdrivers for several seconds (Figure
721 on the next page).
Figure 716
Figure 717
Figure 718
Figure 719
Figure 720