Warner Electric UNIBRAKE NEMA 4 - Manual (Page 5)

Coil Voltage Coil Part No. DC Resistance*
60/115/230 VAC 79137-18-K
Leads B1 to B2 or
B3 to B4 = 8.7 Ohms
50/115/230 VAC 79137-18-N
Leads B1 to B2 or
B3 to B4 = 11.5 Ohms
50/220/440 VAC 79137-18-P
Leads B1 to B2 or
B3 to B4 = 43.5 Ohms
60/230/460 VAC 79137-18-J
Leads B1 to B2 or
B3 to B4 = 34.5 Ohms
60/200/400 VAC 79137-18-L
Leads B1 to B2 or
B3 to B4 = 24.3 Ohms
60/287/575 VAC 79137-18-G
Leads B1 to B2 or
B3 to B4 = 54.5 Ohms
50/208/416 VAC 79137-18-M
Leads B1 to B2 or
B3 to B4 =35.6 Ohms
24 VDC 327208 Leads B1 to B2 = 26.4 Ohms
90 VDC 327209 Leads B1 to B2 = 390 Ohms
5
Friction Disc Replacement
Remove cover, (2) cover support studs “G”, and (2)
3/8-16 mounting cap screws at “M”.
Lift off brake mechanism assembly. Remove
pressure plate(s) and brake disc(s). Replace with
new pressure plate(s) and disc(s). Reassemble
brake mechanism assembly. Multiple disc units,
the domed pressure plate is positioned furthest
away from the motor or brake head; the (B) wear
adjustment screws are in contact with this plate.
Note: Cast Iron Head uses casting surface for last
pressure plate. Set air gap as for wear
adjustment.
Magnetic Coil Replacement
Remove cover, (1) cover stud “G”, (1) 3/8-16
mounting cap screw “M” and (2) slotted screws
“E”.
Lift off complete coil assembly “P” and replace
with new coil assembly of proper electrical rating.
Position leads so as to avoid contact with rotating
parts. Set air gap as for Wear Adjustment.
Pressure Plates
Domed (DPP) / Flat (FPP)
Friction Disc (FD)
5 inch diameter
Coil Assembly
*Resistance values plus or minus 10% at 25°C.
Cast Iron Head Hub
Disc/Pressure Plate Kits
Number Kit Kit
Discs Number Contents
Cast Iron Heads
1 327212-4 1FD and 1DPP
2 327212-5 2FD, 1DPP and 1FPP
3 327212-6 3FD, 1DPP and 2FPP
FD = Friction Disc, DPP = Domed Plate FPP = Flat Plate
Friction Disc Only
1 327213 Disc with Anti-Rattle Clip
Coil Assembly (Solenoids)
Unibrake magnet coils (AC) are single phase.
Warner Electric • 800-825-9050 P-1701-WE
CI Head
Bore Hub Number
5/8 58D29
3/4 58D30
7/8 58D31
Hubs