Stacking - Scotsman FM1500 Manual

FOR THE INSTALLER: Stacking
KSNM30 STACKING KIT INSTRUCTIONS
The purpose of the this kit is to connect the ice
level controls from the bottom machine to an
additional circuit board so that they control both
machines.
////////////////////////////////WARNING/////////////////////////////////
Disconnect electrical power to both machines
while installing this kit.
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1. Stack the two unit's by removing the top panel
from the lower unit (assumed to be already
installed on the bin) and, using a mechanical lift,
place the upper unit onto the lower one. Secure
the two units together with the hardware (straps
and bolts) provided with the upper unit.
2. Remove the front panels from both units.
3. From below the upper unit base, insert the ice
chute extension (from the kit) into the upper unit's
ice chute.
4. Remove the lower unit's existing ice chute
cover, and replace it with the one from the kit.
Transfer the spout switch assembly to the new
cover:
A. Remove microswitch.
B. Pull o-ring out from between chute cover and
spout switch assembly, push spout switch
assembly through chute cover. Reverse to
reassemble on the new cover.
5. Pull the chute extension down and slide it into
the lower unit's new ice chute cover.
6. Remove the control box covers from both units.
LOWER UNIT:
7. Remove the two lower control box mounting
screws and use them to mount the stacking kit
circuit board (upper flange only) in between the
control box and the bulkhead panel.
8. Remove the bushing that the ice level sensor
wires pass through from the control box.
9. Unplug the "photo trans" ice level sensor from
the connection on the ice machine circuit board,
pull it out of the control box, and plug it into the
"photo stack" plug on the stacking kit circuit board.
10. Unplug the "LED" ice level sensor from the ice
machine circuit board, pull it out of the control box,
and plug it into the "LED Stack" connection on the
stacking kit circuit board.
11. One by one, pass all of the wires from the
stacking kit circuit board through the hole in the
control box, and reinstall the bushing removed in
step 8, then:
A. Plug the two pin plug onto the ice machine
circuit board socket marked "LED" (CX2).
B. Plug the 3 pin plug onto the ice machine circuit
board socket marked "Photo Trans" (CX4).
12. Unplug the wire harness connecting the
transformer to the ice machine circuit board, and
remove from the machine, then:
A. Plug the 4 pin plug into the ice machine circuit
board socket marked "power" (CX1).
B. Connect the two free wires from the 4 pin plug
(connected above) to the transformer (marked
"load").
13. Plug the last wire from the stacking kit circuit
board into the "Remote Lamp" (located in the
upper left corner of the board) plug on the ice
machine circuit board.
UPPER UNIT:
14. Unplug, but leave in the control box the "photo
trans" and "LED" ice level sensor wires. Leave in
place on ice chute.
15. There are two different wires in the kit separate
from the circuit board; one has a three pin
connector and the other has a two pin connector.
Find the one with the three pins, and insert the big
end onto "photo trans" on the ice machine circuit
board. Pass the other (smaller) end of the wire
through the bushing in the control box, and through
the bushing beside the ice chute in the base of the
upper unit.
16. Find the wire with the two pin connector, and
insert the bigger two pin plug onto "LED" on the ice
machine control board and pass the other (smaller)
end through the bushing in the control box, and
through the bushing beside the ice chute in the
base of the upper unit (as above).
BACK TO LOWER UNIT:
17. Next, connect the wires from the upper unit to
the stacking kit circuit board: plug the two pin
connector onto the two pin plug, and the three pin
connector onto the three pin plug.
This completes the assembly. Reconnect power
and after 10-15 seconds the units should start;
bottom unit first. To check shut off: in the lower unit
pull left on the front ice level sensor and cover the
open end: the bottom unit's compressor should
stop after about 10-15 seconds, then the top unit's
compressor will stop. Within a few minutes the
auger motors will also stop. Replace the front ice
level sensor, be certain that it is in it's "centered
and locked" position.
Replace all covers and panels.
February, 1989
Page 5
FM1500