Service and Installation Manual
For warranty service, call 1-888-VALPRO8 / 1-813-502-030
16
How the Machine Makes Ice
The machine is in Stand-by mode when plugged in. When the ICE button is
pressed, it will automatically proceed to the ice-making stage.
There are two distinct cycles: Freeze and Harvest. During the Freeze cycle,
water flows to the evaporator surface. In the Harvest cycle, the ice is released.
A complete cycle can take 15 to 40 minutes, depending on ambient
temperature and operating conditions.
Freeze
: During the Freeze cycle the compressor is pumping refrigerant, the fan
motor is blowing air, and the water pump is circulating water. When
the batch of ice has been fully formed, the ice maker stops the Freeze
cycle and begins the Harvest cycle.
Harvest:
During the Harvest cycle the compressor is still operating, but the
water pump has stopped. The hot gas valve opens, diverting hot
refrigerant gas into the evaporator. The gas warms the evaporator,
causing the cubes to slide as a unit off the evaporator and into the
storage bin. The Freeze cycle will restart when all the cubes drop
into the bin.
How the machine uses water:
Each batch of ice is made of a fixed charge of water which enters to the water
tank in several times during the ice-making stage. As the water flows to the
freezing evaporator surface, the water will freeze and stick to the ice cube
molds, and fresh water enters the water tank discontinuously as the water from
the tank freezes continuously on the evaporator.
Evaporat
Condense
r
Compressor
Water
pump
Fan
moto
r
Hot gas valve
Water
tank (trough)
Service and Installation Manual
13
For warranty service, call 1-888-VALPRO8 / 1-813-502-030
Installation Types
This ice maker has only been designed for mobile (free-standing) installation.
There must be adequate air space around the unit for ventilation purposes. (See
page 12.)
Mobile installation:
A mobile installation will allow you to install the ice maker free-standing in
any place you desire provided you have access to a water supply. You must
follow the stated instructions for
a.
Electrical requirements
b.
Water supply
Cleaning before use
After you remove all tape from the machine, clean the inside of your ice maker
and ice storage bin before using them. See “Interior Cleaning” in the Cleaning
and Maintenance section.
Operation
Final Check List before Operation
1.
Have all packing materials and tape been removed from the interior and
exterior of the ice maker?
2.
Did you clean the ice storage bin? (See pages 21 - 26)
3.
Have the installation instructions been followed, including connecting the
machine to water and electricity?
4.
Has the machine been leveled?
5.
Is the ice cube machine in a site where the ambient temperature is between
50º F (10º C) and 100º F (38º C) and the water temperature between 41º F
(5º C) and 90º F (32º C) all year round?
6.
Has the water supply pressure been checked to ensure a minimum of 20
psig with a static pressure not to exceed 80 psig?
7.
Is there a clearance of at least 6
″
at the rear and 6
″
at the sides for
proper air ventilation?
8.
Has the power supply voltage been checked or tested against the nameplate
rating? And has proper grounding been installed for the ice cube machine?
9.
Is the ice cube machine plugged in?
10.
Have you turned on the main water supply and the tap?
11.
Have you checked for leaks at all water supply connections?
Summary of Contents for VPIM-420
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