Scotsman NW-307 Start-Up

Scotsman Ice Systems
Installation and Operating Instructions
NW‐307 / 507 / 457 / 608 / 1008 / 1408 Models
Important Information
This equipment must be installed in accordance with all local, state, and national
regulations. The machine must be installed correctly as per instillation instructions.
This machine must be installed by a qualified Refrigeration or Electrical technician.
A plumber should be used to make the water connections only.
THIS MACHINE IS NOT DESIGNED FOR OUTDOOR USE
LOCATION ‐
This ice machine must be level and situated in a cool dry area with
sufficient air ventilation. The ice machine is NOT to be installed in a cupboard or
with limited or restrictive airflow. The equipment should NOT be located next to
equipment that discharges or radiates hot air on or near the ice machine. NOTE:
Hotter working environments OR water temperatures will reduce the production
capacity of the machine. Operating Specifications Below
°
Operating air temperatures Min 10 c to Max 40
°
Operating water temperatures Min 5 c to Max 35
Operating water pressure Min 1 bar to Max 5 bar
Machine side clearance Min 150mm
Machine rear clearance Min 100mm
Machine top clearance Min 400mm ( NW307 / 507 models only )
A water filter system must be fitted to the ice machine, this will help to reduce and
control the buildup of sediment, scale, mineral and bacteria from accumulating inside
the machine. The ice makers location should have a dedicated power point, a
dedicated water supply and a water drainage point withing one meter of the
machine. For the ice maker to operate effectively and efficiently the machine
requires sufficient air ventilation. The machine requires a minimum side clearance
of 150mm, a minimum rear clearance of 100mm (NW‐307/507 top clearance min of
400mm)
Contact Moffat Service Support On 1300 264 217 For Assistance
Set‐Up ‐
For instillation of an ice maker to an ice storage bin or to an ice dispenser.
Fit legs to the ice storage bin or ice dispenser and set to minimum height, fit the
water drain hose and hose clip to the underside water outlet of the bin / dispenser.
Position the ice storage unit near its final location. Mount the ice maker head to the
ice storage unit. Open the front panel of the ice maker and remove the manuals,
water hoses, packaging, and red strapping tape. Remove the side panels and secure
the ice maker head to the ice bin or dispenser. (side screws for ice bin and rear
brackets and screws for dispenser) Ensure the internal parts are fitted and secured in
their final operating positions (water trough, water pump, water curtain, ice probe or
float, water distribution tube, etc. )
Fit the water supply hose and the water drain hose to their connection points at the
rear of the ice maker using hoses supplied. Connect the water supply hose to the
water filter outlet, attach the water drain hose to the floor drain or tundish.
° °
c ( 24 c ideal )
° °
c ( 18 c ideal )
Fit the steel deflector plate to (back right side) of the ice maker. This is to prevent
recirculation of hot air back into the ice maker. (On the NW307/507 models fit the
wire frame to the top of the machine to prevent the discharge vents being covered)
Maneuver the machine into its final position. Ensure the ice machine has required
side, rear, or top clearances. Ensure the machine is level once in its final position.
Remove the protective plastic from the panels of the machine and ice storage unit.
Electrical Connections
The electrical connections for this machine must comply with all local, state, and
national regulations. The ice maker requires a dedicated power point. Check the
serial plate to ensure voltage requirements and plug are suitable for the wall socket
and power supply for your local area. All electrical connections and adjustments
must be undertaken by a qualified technician.
12 Point Checklist
1) Is the ice maker level and secure to the ice storage unit?
2) Is the ambient air temperature between 10c and 40c?
3) Is there the required 150mm side clearance, 100mm rear clearance and top
ventilation clearances? (NW307/507) Is there any other equipment
discharging hot air near or next to the machine?
4) Have the water connections been made and is the water pressure between 1
and 5 bars? Has the water pressure been tested?
5) Is the incoming water temperature between 5C and 35C?
6) Does the machine have a water filter fitted?
7) Do the electrical requirements comply and has the electrical connection
been made? DO NOT TURN ON THE MACHINE.
8) Has all the packaging been removed from inside the ice machine?
9) Are all the internal components been fitted and secured correctly?
10) Has the owner been instructed on the operation and maintenance of the
machine? Has the owner been given the instillation instructions which
include the maintenance schedule details?
11) Has the machine been cleaned and sanitized before starting up?
12) Does the customer have Moffat's service contact details?
Start Up
1) Open the water supply to the ice machine and check for water leaks.
2) Switch the power on at the wall socket.
3) The NW307/507/457/608 models will enter the startup mode. The PC Board
will show the power ON (green light on) and the freezing and full bin lights
will flash for 3 minutes while filling / purging water.
The NW1008 and NW1408 machines have a 90‐minute start delay. These
models have a crankcase heater in the compressor. If the temperature is
above 25c, the PC Board will override the time delay. One can override the
time delay by pressing the bypass switch on the rear of the ice machine.
4) After starting up mode the machine will enter the freezing mode. The
refrigeration system will run, and the condenser fan will thermostat on and
off during the cycle (ice making green light on) The water pump will run and
circulates water over the evaporator. The water level sensors will monitor
the water level and add water when required. After + ‐ 15 to 24 minutes the
ice thickness probe / float will put the ice machine into a harvest once it
senses a full sheet of ice. The harvest mode will run for + ‐ 60 seconds and
will heat the evaporator until the ice drops into the ice bin.
5) When the ice drops into the ice bin the water curtain opens and then closes.
The PC Board senses the ice drop and puts the machine back into a freeze
cycle to make more ice. When the ice bin is full the water curtain is left in
the open position, the PC Board senses the open circuit and shuts the
machine down (full bin orange light on) until the ice bin level drops enough
for the water curtain to close. The machine will restart after a three‐minute
delay.
6) Inspect the ice in the storage bin after the second drop of ice and if
necessary, adjust the ice thickness float probe as per below diagram.
NOTE: The ice cubes must have a + ‐ 3mm concave dimple in the back of
each cube. The machine makes a slab of ice that breaks up when falling
into the ice bin, not every ice cube will break up perfectly. If the ice
thickness is set to thick the ice will not break up and if the ice is set to thin,
the ice sheet is not fully formed and may shut the machine down. The
machines require a full sheet of ice to drop off the evaporator (not
individual pieces)
Ice Thickness Float Probe Ice Thickness Diagram
The ice thickness probe can be adjusted for thicker or thinner ice cubes. By
carefully loosening the ice thickness float bracket screw, move the bracket
up slightly (for thinner ice) or down slightly (for thicker ice) Take a photo of
the bracket position before you make the adjustment. Only move the
bracket 1mm at a time, check the ice thickness after the two drops of ice
after the adjustment has been made.
NOTE: The ice cubes should have a 3mm concave dimple on the back of the
cube. The ice bridge connecting the ice cubes should be between 2mm and
3mm thick. Do not move the ice thickness bracket up or down more than
1mm at a time.
(Use a 6mm drill bit to set clearance between probe and evaporator.)
Contact Moffat Pty Ltd on 1300 264 217 for Assistance