Scotsman NM1250R Service Manual page 8

NM1250R
FOR THE INSTALLER: Stacking
////////////////////////////WARNING///////////////////////////
ELECTRICAL POWER MUST BE OFF
WHEN CONNECTING WIRES
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1. Install the lower unit onto the bin.
2. Remove the top panel from the lower unit.
3. With the aid of a mechanical hoist, lift the
upper machine onto the top of the lower unit.
Align the rear, left, and right side panels.
4. Secure the bottom machine to the top
machine with the hardware provided with the
top unit: 4 cap screws, and 2 metal straps.
5. Use stacking kit KSTACK30:
a) In the lower unit, remove the ice chute
cover.
b) In the upper unit, temporarily remove the
ice discharge chute.
c) In the lower unit, insert the chute from the
kit into the hole in the base of the upper unit,
temporarily push it up into the base.
d) In the lower unit, install the new ice chute
cover, then slide the connecting chute down
into the hole in the new cover.
e) In the upper unit, reinstall the ice chute and
cover. Remove the upper unit bin control
sensors from their circuit board connections.
Install the relay from the kit in the location
illustrated.
f) Install interconnecting wires from the kit
between the upper unit circuit board "opto"
(purple wire) and "LED" (yellow wire)
connections and the relay:
Purple to terminal 9.
Yellow to terminal 6.
Install wire harness from lower unit through
the hole in the base, and connect to the relay
terminals A & B.
g) In the lower unit, remove the wire harness
from the transformer to the circuit board.
Connect new wire harness (just routed from
the upper unit) onto transformer and circuit
board.
Replace the front panels.
Note: When started, the lower unit will start
first, then the upper.
November, 1988
Page 8