Servend MD 150, Installation & Service Manual

Page: 34 / 64

34
Manufactured beginning early 1994
OPERATION
SEQUENCE OF OPERATION
Customer’s cup presses rocking chute push lever or
customer’s hand presses push button. The clear plastic
arm at the top and the left rear of the clear plastic chute
pushes upward on the door.
The door pivots up from the left and right mounting brackets.
The clear plastic arm at the top and left rear of the ice
chute also activates the lever of the micro switch. When
activated, the micro switch starts the gear motor. The
gear motor turns the paddle wheel and agitator arm.
When the paddle wheel turns, ice is carried from the
bottom of the bin to the dispense point. Ice falls forward
through the open door, into the ice chute and to the
customer’s cup.
The door lock keeps the door shut during periodic agita-
tion. Periodic agitation is optional on the MD-150 and
MD-175. Periodic agitation is standard on the MD-200,
MD-250, MD 250-36, and MDH-302.
During periodic agitation, the paddle wheel and agitator
turn for approximately three seconds every three and
one half-hours of non-use. Since ice is brought forward
during periodic agitation, ice would fall through the ice
dispense door if the door lock was not present.
Manufactured before early 1994
Customer’s cup presses against the push plate. The push
plate raises the microswitch actuator arm located on the
right side of the ice dispense chute. The microswitch
actuator arm activates the microswitch.
The microswitch activates the solenoid, which pulls down
the solenoid plunger. The plunger is connected to a
cable, which is connected to a pulley, then another cable
raises the door of the ice chute.
The microswitch also activates the gear motor. The gear
motor turns the agitator and paddle wheel, lifting ice from
the bottom of the bin to the ice dispense point. Ice falls
forward through the open door, through the bin spout,
into the ice chute and to the customer’s cup.
Push Button Ice Dispensing, Solenoid, Cable Style Door
Customer’s finger presses the push button, located in
the merchandiser frame. The button is labeled, “PUSH
FOR ICE”.
The push button energizes the plunger micro- switch.
The microswitch activates the solenoid, which pulls down
the solenoid plunger. The plunger is connected to a
cable, which is connected to a pulley, then another cable
raises the door of the ice chute.
The microswitch also activates the gear motor. The gear
motor turns the agitator and paddle wheel, lifting ice from
the bottom of the bin to the ice dispense point. Ice falls
forward through the open door, through the bin spout,
into the ice chute and to the customer’s cup.
P PU
USS
H H FF
O OR
R II
C CEE
Solenoid/Door Mount
Pulley
Microswitc
Door Bumper
Door
Cable
Solenoid
Plunger