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Carrier C708 - User Manual

Carrier C708
148 pages
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Models C708/C709/C716/C717
Heat Treatment
Soft Serve Freezers
Service Manual
059061-S
6/15/05

Table of Contents

Questions and Answers

  • D
    David BurnsSep 10, 2025
    What causes a plugged door spout in a Carrier C708 Freezer?
    • V
      Valerie MyersSep 10, 2025
      A plugged door spout in your Carrier Freezer can be caused by: * Poor scraping. Replace scraper blades. * Damaged draw valve o-rings. Replace o-rings. * A damaged beater assembly. Inspect and replace if necessary. * A worn rear shell bearing. Inspect and replace if necessary.
  • R
    Ryan NavarroSep 9, 2025
    How to fix if the mix in the hopper of Carrier C708 Freezer is too cold?
    • N
      Nancy ElliottSep 9, 2025
      If the mix in the hopper of your Carrier Freezer is too cold: * The temperature is out of adjustment. Adjust hopper temperature. * The agitator paddle is not installed. Install the agitator paddle.
  • D
    David EricksonAug 22, 2025
    Why does my Carrier C708 shut off and produce a fault tone?
    • B
      Bryan HowardAug 22, 2025
      If your Carrier Freezer shuts off and produces a fault tone, it could be due to: * A fault alert. Check the fault screen in the operator’s menu. * Insufficient air space. Allow 6” (152 mm) minimum clearance around both sides of unit and place the back against a wall.
  • W
    Wesley SmithSep 6, 2025
    How to stop a leaking draw valve on a Carrier C708 Freezer?
    • M
      Mrs. Amanda BeasleySep 6, 2025
      A leaking draw valve on your Carrier Freezer could be caused by: * Worn or missing draw valve o-rings. Replace regularly. * Inadequate lube on draw valve o-rings. Lubricate properly. * The wrong type of lubricant being used. Use proper lubricant. Example: Taylor Lube High Performance.
  • R
    Robin LeeSep 5, 2025
    Why is there excessive mix leakage in my Carrier C708 Freezer?
    • J
      jeremiah20Sep 5, 2025
      Excessive mix leakage through the rear of your Carrier Freezer into the drip pan can occur because of: * A worn or missing drive shaft seal. If worn, nicked or missing, replace the drive shaft seal. * Inadequate lubrication. Lubricate properly. * The drive shaft rotates forward. Check gear alignment.
  • K
    Kathy WilkersonSep 4, 2025
    What to do if the mix in the hopper of Carrier C708 is too warm?
    • R
      reyescharlesSep 4, 2025
      If the mix in the hopper of your Carrier Freezer is too warm: * The temperature is out of adjustment. Adjust hopper temperature. * The agitator is not installed. Install the agitator.
  • M
    Michelle LeachSep 2, 2025
    Why is the liquid line of my Carrier C708 Freezer hot?
    • A
      Andrea DaughertySep 3, 2025
      If the liquid line in your Carrier Freezer is hot, it is likely due to a shortage of refrigerant. Repair the leak and recharge the system.
  • R
    Richard MorganSep 1, 2025
    Why does my Carrier Freezer operate for a long time?
    • V
      Victor PearsonSep 1, 2025
      If your Carrier Freezer operates for extended periods, it could be due to: * Worn scraper blades. Replace the scraper blades. * High overrun product (C708/C716). Check pump operation for correct air/mix ratio.
  • J
    James HobbsAug 31, 2025
    Why is no product dispensed from my Carrier C708 Freezer when the draw valve is open and the machine is in “AUTO” mode?
    • M
      Mark ShawAug 31, 2025
      If no product is dispensed from your Carrier Freezer when the draw valve is open and the machine is in “AUTO” mode, consider these possibilities: * The door spout is plugged. Break down the machine and dislodge the door spout clog. * The beater is rotating counterclockwise. Correct beater rotation to clockwise. * There is inadequate mix in the hopper (mix out light is lit). Fill hopper with mix.
  • M
    Meghan ParrishAug 30, 2025
    What causes the product from Carrier C708 Freezer to be too stiff?
    • L
      lynnericaAug 30, 2025
      If the product from your Carrier Freezer is too stiff, it may be because: * The product viscosity is set too cold. Adjust the product viscosity. * The air/mix pump is incorrectly assembled or malfunctioning (C708/C716). Re-assemble pump or replace faulty components.

Summary

Section 1: Introduction

Safety

Information regarding safety features and precautions for operators and service technicians.

Refrigerant

Details about the R404A refrigerant used, handling precautions, and EU directive compliance.

Specifications

Detailed specifications for models C708, C709, C716, and C717, including dimensions and electrical.

General Installation Instructions

General guidelines for installing the freezer, including disconnect switches and air clearance.

Running Specifications

Recommended operating pressures and temperatures for the freezer components.

Important to the Operator

Overview of operator controls, indicators, and symbols used on the machine.

Section 2: Controls, Systems and Operations

Universal Control Programming

Explanation of the control system's operating screens, initialization, and data handling.

Heat Treatment Cycle

Description of the heat treatment cycle's function, phases (Heat, Hold, Cool), and lock-out conditions.

Heat Treatment Graph

Visual representation of the heat treatment cycle phases and timing requirements.

Freezer Lock-out

Information on hard lock and soft lock conditions, their causes, and resolution.

Power Interrupt

Details on how the machine recovers from power failures and brush clean requirements.

Pump Operation

Explanation of the mix pump's operation, including pump key and draw timer.

Timers

Description of various timers used in the machine's operation, such as stir, pump, and safety timers.

Jumper Pins - UVC3

Explanation of jumper pin functions for different configurations and interface board jumpers.

Beater Stir Cycles

Description of beater motor operation in STANDBY and HEAT modes.

Setting Viscosity

Guidance on adjusting soft serve viscosity by monitoring beater motor amperage.

Control Overview

Diagrams illustrating the control systems for C708/C709 and C716/C717 models.

Refrigeration System - Hot Gas Treatment

Explanation of the refrigeration system's components and hot gas treatment process.

Checking and Setting Refrigeration Valves

Step-by-step procedures for checking and setting refrigeration valves and system pressures.

Refrigeration Schematic

Diagram illustrating the refrigeration system layout, components, and pressures.

Refrigeration System Components

List and descriptions of the various components within the refrigeration system.

Section 3: Troubleshooting

General Troubleshooting Guide

A table listing common problems, their causes, and suggested remedies.

Electrical Troubleshooting Guide

Table showing component operation across different modes (HEAT, STANDBY, WASH, AUTO, PUMP).

Pump Style Freezer Troubleshooting

Specific troubleshooting steps for issues related to the air/mix pump operation.

Solenoid Valve Failure Troubleshooting

Symptoms and results of solenoid valve failures in hot gas units.

Bacteria Troubleshooting

Information on bacteria counts, causes of contamination, and prevention methods.

Section 4: Parts

Parts Warranty Explanation

Details on warranty periods for different classes of parts and warranty conditions.

Parts Identification

Exploded views and part identification lists for models C708, C709, C716, and C717.

Parts List

Comprehensive list of all available parts with part numbers, quantities, and class information.

Carrier C708 Specifications

General IconGeneral
BrandCarrier
ModelC708
CategoryFreezer
LanguageEnglish

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