Dexter Laundry T450 Express Owner's Booklet page 5

PLUMBING
Water supply hoses are furnished with each machine. The threaded connections on the hoses are ¾-
11 ½ NHT.
Separate hot and cold water lines must be provided, maintaining 30 psi to 120 psi (207 kPa to 827
kPa) water flow pressure. A 140F (60C) degree hot water supply is recommended for best washing
results.
DRAIN
The drain outlet tube at the rear of the machine is 3 inches (76 mm) in diameter. Any drain hose
used must be lower than the drain valve to assure proper draining.
ELECTRICAL
SHUT OFF POWER AND WATER BEFORE OPENING ANY SERVICE PANELS.
The Dexter 450 single-/three-phase 208-240VAC 60 Hz washing machines are intended to be
permanently installed appliances. No power cord is provided. The machine should be connected to
an individual branch circuit not shared by lighting or other equipment. The connection should be
sheathed in liquid tight flexible conduit, or equivalent, with conductors of the proper size and
insulation. A qualified technician should make such connections in accordance with the wiring
diagram. (Suggest a minimum wire size of 12 ga.)
TO MAKE ELECTRICAL CONNECTIONS: Disconnect all power to the washer. Remove screw
and lift out the cover located in the upper left corner of the machine (as viewed from the back).
 If power is 208-240-3PH-60Hz, connect L1, L2, L3 and ground. If there is a high leg it must
be connected to L3.
 If power is 208-240-1PH-60Hz, connect L1, L2 and Ground.
NOTE: It is important that the grounding screw next to the power terminal block TB-1 be
connected to a good external ground.
FUSING REQUIREMENTS:
SINGLE- or THREE -PHASE POWER - 15 AMP TIME-DELAY (DUAL ELEMENT)
FUSE (or equivalent circuit breaker)
CONTROLS TRANSFORMER:
The controls transformer is located inside the control trough and steps a range of 208 to 240 volts
down to 115 volts. There are two terminals on the controls transformer for the primary (incoming)
power. Use the terminal marked "208V" for power supplies between 208 and 220 volts. Use the
terminal marked "230V" for power supplies between 221 and 240 volts.
WARNING