Howe Rapid Freeze 4000-RL Supplement

Howe Corporation
Phone: [phone]
Fax: [phone]
1650 North Elston Avenue
Website: www.howecorp.com
Chicago, IL 60642-1585
Email: [e-mail]
Rapid Freeze®Ice Flaker
Installation & Service Manual
For Use with Remote Single Condensing Unit
4000-RL
6000-RL

2
ENGINEERING GUIDELINES .................................................................................................................3
Location Requirements ........................................................................................................................................................... 3
Water Supply Requirements.................................................................................................................................................... 3
Drain Water Piping Requirements ........................................................................................................................................... 4
Electrical Requirements........................................................................................................................................................... 4
Refrigeration Requirements .................................................................................................................................................... 6
Piping Table............................................................................................................................................................................. 8
Refrigerant Pipework .............................................................................................................................................................. 8
Refrigerant Pipework Insulation Requirements ....................................................................................................................... 8
FIELD INSTALLATION ..........................................................................................................................9
Safety Information and Guidelines .......................................................................................................................................... 9
Inspection ............................................................................................................................................................................... 9
Condensing Unit Rigging and Mounting................................................................................................................................... 9
Piping .....................................................................................................................................................................................10
Leak Testing ...........................................................................................................................................................................10
Field Wiring ............................................................................................................................................................................11
Evacuation .............................................................................................................................................................................12
Refrigerant Charging Instructions ...........................................................................................................................................12
Installation Checklist ..............................................................................................................................................................13
START UP AND OPERATION ..............................................................................................................14
Water Operation ....................................................................................................................................................................14
Refrigeration Operation .........................................................................................................................................................17
Electrical Operation................................................................................................................................................................22
Mechanical Operation ............................................................................................................................................................27
Start-Up Checklist...................................................................................................................................................................31
MAINTENANCE ................................................................................................................................32
Preventative Maintenance Schedule ......................................................................................................................................32
Cleaning Procedure ................................................................................................................................................................33
Sanitizing Procedure...............................................................................................................................................................34
Lubrication .............................................................................................................................................................................35
Water Filtration......................................................................................................................................................................36
TROUBLESHOOTING.........................................................................................................................38
APPENDIX........................................................................................................................................41

Engineering Guidelines
3
Engineering Guidelines
Location Requirements
Howe Rapid Freeze Ice Flakers are designed to
operate in ambient room temperatures
between 50°F and 100°F.
Minimum Ambient
Temperature
Maximum Ambient
Temperature
50°F
100°F
The Ice Flaker warranty is void if it is installed
in ambient room temperatures below 50°F.
The Ice Flaker must be located above a sanitary
sewer floor drain hub or trench drain to ensure
proper drainage to the floor. Many designers
slope floors to the sanitary sewer inlets to
manage these wet areas.
If installing the Ice Flaker with a Howe Ice Bin,
ensure that the bin is adequately secured to
the floor so as to prevent the assembly from
tipping when empty.
Water Supply Requirements
Cold water supply to the Ice Flaker must be
totally separate and unaffected by any local hot
water supply.
This cold water supply must be within the range
of 45°F to 90°F.
Minimum Water
Supply Temp.
Maximum Water
Supply Temp.
45°F
90°F
The cold water supply pressure must be within
a 20 PSIG to 60 PSIG range.
Minimum Water
Pressure
Maximum Water
Pressure
20 PSIG
60 PSIG
Straight Reverse Osmosis (RO) treated water
should never be supplied to the Ice Flaker.
RO system treated water is aggressive toward
metals and plated surfaces. In addition RO
water will affect the life and integrity of rubber
and plastic material Ice Flaker components. If
only RO water is available, Post-RO treatment
must be provided to raise pH and mineral
content.
THE INFORMATION FOUND IN THIS MANUAL IS INTENDED FOR USE BY INDIVIDUALS POSSESSING
EXPERIENCED BACKGROUNDS IN ELECTRICAL, REFRIGERATION AND MECHANICAL REPAIR AND
MAINTENANCE. ANY ATTEMPT TO REPAIR OR ALTER THIS EQUIPMENT MAY RESULT IN PERSONAL
INJURY OR PROPERTY DAMAGE. THE MANUFACTURER IS NOT RESPONSIBLE FOR THE INTERPRETATION
OF THE INFORMATION CONTAINED HEREIN, NOR HAS THE MANUFACTURER ASSUMED ANY LIABILITY IN
CONNECTION WITH ITS USE.
THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY LOSS, DAMAGE OR INJURY CAUSED AS A RESULT
OF EITHER (I) ANY REPAIR OR REPLACEMENT TO THE MANUFACTURER’S EQUIPMENT THAT IS DONE BY
A THIRD PARTY NOT PREVIOUSLY APPROVED BY THE MANUFACTURER, OR (II) ANY REPAIR OR SERVICE
WORK PERFORMED ON ANY OF THE MANUFACTURER’S EQUIPMENT WHICH DOES NOT STRICTLY
FOLLOW THE PROCEDURES SET FORTH HEREIN.
IMPORTANT

4
Engineering Guidelines
Generally, filtration of cold supply water is
recommended.Howe offers a complete line of
replaceable core cartridge filter treatment
systems designed to improve ice quality and
extend the life of the Ice Flaker.
This filtration will also reduce supply water
related service problems if changed at least
every six months or depending upon local water
conditions.
A dedicated 1/2” ODS copper cold water supply
should be located within 4 feet of the Ice Flaker
complete with hand shut off valve.
A 3/8” OD copper tube should connect the field
installed shut off valve with the Ice Flaker water
inlet connection located at the rear of the
machine.
Drain Water Piping Requirements
TheDrain Water Piping figure above illustrates
the recommended piping to a floor sanitary
sewer hub or trench drain. The two vertical
pipe drops should drain water through an
indirect water connection with an “Air Gap”.
Code authorities having jurisdiction may dictate
other indirect water connection requirements.
The figure depicts two separate drain lines
which are required to ensure the Ice Flaker
does not inadvertently flow Water Sump Drain
water into the Ice Bin or Carts in the event of a
backup or any other malfunction.
Electrical Requirements
A dedicated 15 amp power supply from a field
furnished and installed disconnect switch is
required for each Ice Flaker.
A dedicated 3 pole power supply from a field
furnished and installed disconnect switch is
required for each Remote Condensing Unit.The
amperage of the power supply circuit must
match the selected Remote Condensing Unit
supplied by Howe with respect to Minimum
Circuit Amperage (MCA) and Maximum
Overcurrent Protection Device (MOPD)
nameplate information.
A two conductor control circuit is required to
interconnect the Ice Flaker with the Remote
Condensing Unit interlocking relay.