S1800 Marine Model Ice Machines – Service Manual - Manitowoc Ice
S1800 Marine Model Ice Machines – Service Manual - Manitowoc Ice
S1800 Marine Model Ice Machines – Service Manual - Manitowoc Ice
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Section 6 Electrical System<br />
6. HARVEST<br />
The harvest valve(s) remains open<br />
and the refrigerant gas warms the<br />
evaporator. This causes the cubes to<br />
slide, as a sheet, off the evaporator<br />
and into the storage bin.<br />
The sliding sheet of cubes swings the<br />
water curtain out, opening the bin<br />
switch. This momentary opening and<br />
closing of the bin switch terminates<br />
the Harvest Cycle and returns the ice<br />
machine to the Freeze Cycle (steps<br />
3-4).<br />
The air compressor (when used)<br />
remains energized throughout the<br />
entire harvest cycle. The air<br />
compressor will automatically<br />
energize after 60 seconds when the<br />
harvest cycle time exceeded 75<br />
seconds in the previous cycle.<br />
Table 6-6. Self-Contained <strong>Model</strong>s<br />
L1<br />
(88)<br />
Ground<br />
(89)<br />
High<br />
Pressure<br />
Cutout<br />
(42)<br />
(55)<br />
<strong>Ice</strong> Thickness<br />
Probe<br />
Water Level Probe<br />
Contactor<br />
Contacts<br />
(Black)<br />
L1<br />
Overload<br />
(51) (85)<br />
Control Board<br />
(2)<br />
(6)<br />
(5)<br />
(1)<br />
(7)<br />
(4)<br />
Trans.<br />
Fuse (7a)<br />
Water Valve<br />
(21)<br />
(22)<br />
Harvest Valve<br />
(77)<br />
(80)<br />
SV3137-7<br />
6. Harvest (Until Bin Switch Activation)<br />
Toggle Switch ICE<br />
Bin Switch Closed<br />
Control Board Relays<br />
#1 Water Pump OFF<br />
#2 Harvest Valve (Left) ON<br />
#3 Harvest Valve (Right) ON (When Used)<br />
#4 Air Compressor ON (When Used)<br />
#5 Water Inlet Valve OFF<br />
#6 Water Dump Valve OFF<br />
#7 Contactor Coil Closed / ON<br />
#7A Compressor ON<br />
#7B Condenser Fan Motor OFF; May Cycle ON<br />
Safety Controls (Which could stop ice machine operation)<br />
High Pressure Cut-Out Closed<br />
Main Fuse (On Control Board) Closed<br />
Part Number 80-1634-3 6-7<br />
Low DC<br />
Voltage<br />
Plug<br />
(Red)<br />
Fan Cycle<br />
Control<br />
(9)<br />
L2<br />
(25)<br />
(8)<br />
Compressor<br />
(86)<br />
(Yellow)<br />
(61)<br />
(26)<br />
(1)<br />
(2)<br />
(20)<br />
(60)<br />
(57)<br />
(6)<br />
(46)<br />
(58)<br />
Dump Valve<br />
(76)<br />
(81)<br />
Water Pump<br />
(98)<br />
(59)<br />
Terminates at<br />
Pin Connection<br />
Contactor Coil<br />
(56)<br />
Air Compressor<br />
Bin Switch<br />
PTCR<br />
Fan Motor<br />
Clean<br />
OFF<br />
ICE<br />
Run Capacitor<br />
(74)<br />
Run Capacitor<br />
(45)<br />
(50)<br />
(99)<br />
(75)<br />
L2 or N
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