Manitowoc Marine Q 1000, Руководство по обслуживанию

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1
Electrical System
Electrical System
Energized Parts Charts
SELF-CONTAINED WATER-COOLED MODELS
Ice Making Control Board Relays
Sequence 1 2 3 4 5 5A Length
Of
Operation
Water
Pump Water Fill
Valve
Hot Gas
Valve(s)
Water
Dump
Valve
Contactor
Coil
Compressor
Of
Time
Start-Up
1
1. Water Purge
On Off On On Off Off 45 Seconds
2. Refrigeration System
Start-Up
Off On On Off On On 5 Seconds
Freeze Sequence
3. Pre-Chill
Off Off Off On On 30 Seconds
Freeze
On
May cycle
On/Off
during first
45 sec.
-------------
Cycles On,
then Off 1
more time
Off Off On On
Until 7 sec.
water contact
with ice
thickness
probe
Harvest Sequence
5. Water Purge
On
30 sec.
Off, 15
sec. On
On On On On
Factory-set at
45 Seconds
6. Harvest Off Off On Off On On
Bin switch
activation
7.
Automatic
Shut-Off
Off Off Off Off Off Off
Until bin switch
re-closes
1
Initial Start-Up or Start-Up After Automatic Shut-Off
Harvest Water Purge
The circuit board has an adjustable water purge in
the harvest cycle. This permits a 15, 30 or 45
second purge cycle.
Auto Shut-Off
The ice machine remains off for 3 minutes before it
can automatically restart. The ice machine restarts
(steps 1-2) immediately after the delay period, if the
bin switch re-closes prior to 3 minutes.
Safety Timers
The control board has the following non-adjustable
safety timers:
FREEZE SEQUENCE
•
The ice machine is locked into the freeze cycle
for the first 6 minutes, not allowing the ice
thickness probe to initiate a harvest sequence.
•
The maximum freeze time is 60 minutes, at
which time the control board automatically
initiates a harvest sequence (steps 5-6).
HARVEST SEQUENCE
The maximum harvest time is 3-1/2 minutes, at
which time the control board automatically
terminates the harvest sequence. If the bin switch is
open, the ice machine will go to automatic shut-off
(step7). If the bin switch is closed, the ice machine
will go to the freeze sequence (steps 3-4).