Manitowoc-ice S Manuel d'utilisateur télécharger pdf (Page 33)

Section 2 Installation Instructions

Part Number 000000966 2-21

Remote Ice Machine Usage with Non-Manitowoc Multi-Circuit Condensers

WARRANTY

The sixty (60) month compressor warranty, including

thirty six (36) month labor replacement warranty, shall

not apply when the remote ice machine is not installed

within the remote specifications. The foregoing warranty

shall not apply to any ice machine installed and/or

maintained inconsistent with the technical instructions

provided by Manitowoc Ice, Inc. Performance may vary

from Sales specifications. S-Model ARI certified

standard ratings only apply when used with a Manitowoc

remote condenser.

If the design of the condenser meets the specifications,

Manitowoc’s only

approval is for full warranty coverage

to be extended to the Manitowoc manufactured part of

the system. Since Manitowoc does not

test the

condenser in conjunction with the ice machine,

Manitowoc will not endorse, recommend, or approve the

condenser, and will not be responsible for its

performance or reliability.

HEAD PRESSURE CONTROL VALVE

Any remote condenser connected to a Manitowoc S-

Model Ice Machine must have a head pressure control

valve #836809-3 (available from Manitowoc Distributors)

installed on the condenser package. Manitowoc will not

accept substitute “off the shelf” head pressure control

valves.

FAN MOTOR

The condenser fan must be on during the complete ice

machine freeze cycle (do not cycle on fan cycle control).

The ice maker has a condenser fan motor circuit for use

with a Manitowoc condenser. It is recommended that this

circuit be used to control the condenser fan(s) on the

multi-circuit condenser to assure it is on at the proper

time. Do not exceed the rated amps for the fan motor

circuit listed on the ice machine’s serial tag.

INTERNAL CONDENSER VOLUME

The multi-circuit condenser internal volume must not be

less than or exceed that used by Manitowoc (see chart

on next page). Do not exceed internal volume and try

to add charge to compensate, as compressor failure

will result.

CONDENSER ΔT

ΔT is the difference in temperature between the

condensing refrigerant and entering air. The ΔT should

be 15 to 20°F (-9.4 to -6.6°C) at the beginning of the

freeze cycle (peak load conditions) and drop down to 12

to 17°F (-11.1 to -8.3°C) during the last 75% of the

freeze cycle (average load conditions).

REFRIGERANT CHARGE

Remote ice machines have the serial plate refrigerant

charge (total system charge) located in the ice maker

section. (Remote condensers and line sets are supplied

with only a vapor charge.)

QUICK CONNECT FITTINGS

The ice machine and line sets come with quick connect

fittings. It is recommended that matching quick connects

(available through Manitowoc Distributors) be installed in

the multi-circuit condenser, and that a vapor “holding”

charge (5 oz.) of proper refrigerant be added to the

condenser prior to connection of the ice machine or line

set to the condenser.

Important

Manitowoc warrants only complete new and unused

remote packages. Guaranteeing the integrity of a

new ice machine under the terms of our warranty

prohibits the use of pre-existing (used) tubing or

condensers.

Caution

Do not use a fan cycling control to try to maintain

discharge pressure. Compressor failure will result.

Caution

Never add more than nameplate charge to ice

machine for any application.

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Manitowoc-ice S Manuel d'utilisateur Page 33

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