AMS SENSIT 3 GLASS FRONT VENDOR
L0086, Rev. G
8-3
3. Turn bulb one-quarter turn and, at both ends at the
same time, slide out through the slots in bulb sockets.
4. Remove one of the two black end caps from the clear
protective tube. Slowly remove defective bulb by
sliding it out of the tube.
5. Dispose of bulb properly.
6. Slowly insert new bulb into clear protective tube,
turning the bulb so the pins are centered in the opening
in the black end cap. Install the second black end cap,
centering the opening over the pins.
7. Install the bulb by inserting bulb pins at both ends at
the same time through slots in bulb sockets, then turn
bulb one-quarter turn.
8. Plug in the merchandiser to test the lamp.
9. Close the merchandiser door.
8.8.2 Replacing Optional LED Lamps
1. Open the door.
2. Turn off the power to the control board by using the
power switch.
3. Locate the LED harness and remove it from the MDB
harness.
4. Remove the screws holding the large and small P-
clips, and remove the LED lamps.
5. Install the replacement LED lamps, using the small and
large P-clips and the screws.
6. Connect the LED harness to the MDB harness.
7. Turn on the power to the control board.
8. With the LED lamps operating, turn the LED lamps to
direct the light into the merchandiser.
9. Close the merchandiser door.
8.9 DEFROSTING THE EVAPORATOR COIL
Excess moisture accumulating inside the cabinet
may freeze in the evaporator coil. As the coil becomes
blocked all useful chilled air is also blocked.
1. Unplug the merchandiser
2. Open the door.
3. If the merchandiser has entered an H&S vending hold,
the food products should be disposed of.
4. Place a fan on the floor in front of the merchandiser to
direct room temperature air into the back of the
cabinet.
5. Do not use any tools or electrical appliances to chip at,
heat up or otherwise ‘speed up’ the defrosting action
around the coil. Do not puncture the coil.
6. Check if the base under the evaporator drain pan is the
non-freezing type, which has two large rectangular
vent holes formed in its longest side. If the base is
made without these large holes contact AMS to
arrange for a Non-Freezing Evaporator Drain Pan Kit
(Refer to Kit Drawing 21351).
7. Look for the source of excess moisture.
8. Look for broken or leaking product. Dispose of it and
clean up the liquid.
9. Inspect the vend hopper and clean it of liquids and
broken containers.
10. Check to make sure the vend hopper door doesn’t
‘hang open’.
11. Check that the gasket of the chiller housing is securely
contacting the cabinet and is sealing it on all sides.
12. Check to ensure the sealing putty is firmly in place
around the two openings on the rear, right hand edge
of the chiller housing. Use more putty if it is missing or
is not enough.
13. Check the door gasket around the cabinet opening. It
should be intact.
14. Check if the door closes squarely on all four sides and
the lock draws the door firmly against the gasket.
15. After the evaporator coil has been defrosted, clean up
any water inside the cabinet.
16. Close the door.
17. Plug in the merchandiser and allow merchandiser to
cool down before loading perishable products.
8.10 TESTING THE TEMPERATURE SYSTEM
(Health and Safety)
1. Enter the service mode (Refer to Section 6.0).
2. Press
#
until the Temperature section appears, then
press
2
to view the current set point. The temperature
will be displayed in both Fahrenheit and Celsius. The
setpoint of the merchandiser must be 41°F or lower for
the H&S option to be enabled.
Press 5 to initiate the NAMA H&S 15 minute Automatic
Shutoff Controls test.
3. At this point the sensor can either be temporarily
disconnected, causing the controller to assume a
temperature of 120°F/49C, or relocated outside the
cabinet. Relocating the sensor outside will allow the
sensor to be tested as well.
4. The sensor is mounted to its bracket using two spring
clamps (Refer to Figure 8.3). To remove it, first unwrap
the sensor wire from the two slots in the bracket, and
then slide the sensor out of the two spring clamps.
5. If the sensor is relocated outside the merchandiser,
carefully close the door and allow the sensor bulb to
exceed 41°F when the door is closed. The temperature
may be monitored by pressing the
*
button (the sensor
bulb has a 20-25 second response delay to minimize
hysteresis error before the correct temperature is
displayed).
6. 15 minutes after the door is closed, the display should
read “OUT OF SERVICE- HS1”. The merchandiser will
not vend products until the door is opened and the error
is cleared (Refer to Section 6.1).
Figure 8.3 Temperature Sensor
Summary of Contents for Sensit 3 39 VRM
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