Dexter Laundry T-900 (Commercial) - Manual (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
WARNING
SHUT OFF POWER AND WATER BEFORE OPENING ANY SERVICE PANELS.
Dexter 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- and THREE -PHASE MODELS - 20 AMP TIME-DELAY (DUAL ELEMENT)
FUSE (or equivalent circuit breaker). *
*Note: For elevations above 6600 feet or very hot climates, a 30 amp breaker is recommended due
to down-rating of circuit breakers under these conditions.
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 215 volts. Use the terminal
marked “230V” for power supplies between 216 and 240 volts.