True Manufacturing Company TPP-67 - User Manual

refrigerated food prep
TRUE FOOD SERVICE EQUIPMENT, INC.
2001 East Terra Lane • O’Fallon, Missouri 63366-4434
(636)-240-2400 • FAX (636)-272-2408 • INT'L FAX (636)272-7546 • (800)-325-6152
Parts Department (800)-424-TRUE • Parts Department FAX# (636)-272-9471
Web: www.truemfg.com
TRUE
food service equipment, inc.
INSTALLATION MANUAL
INSTALLATION MANUAL
refrigerated food prep
UNDERCOUNTERS
WORKTOPS
SANDWICH/SALAD
PIZZA PREP &
FOOD PREP
TPP-67
TWT-67D-2
TSSU-48-10-HC
TFP-72-30M-D-2
CONGRATULATIONS!
You have just purchased the finest commercial refrigerator
available. You can expect many years of trouble-free operation.
TABLE OF CONTENTS
SAFETY INFORMATION
Safety Precautions 1
Proper Disposal, Connecting Electricity, & Adapter Plugs 2
INSTALLATION
Ownership, Uncrating, & Electrical Instructions 3
Wire Gauge Chart 4
Locating and Leveling 5
Installation of Legs or Castors 5
Sealing Cabinet to the Floor 6
SETUP
Standard Accessories 7
OPERATION
Startup 9
Mechanical Temperature Controls Sequence of Operation 10
Electronic Temperature Controls Sequence of Operation 14
MAINTENANCE, CARE, CLEANING
Cleaning Condenser Coil 25
Important Warranty Information 25
Stainless Steel Equipment Care and Cleaning 26
General Maintenance 27
WARRANTY
Warranty 29
MISC1914 • 04.24.2017 • AC
975530

Summary

SAFETY INFORMATION

SAFETY PRECAUTIONS

Basic safety precautions when using electrical appliances.

CHILD ENTRAPMENT AND DISPOSAL SAFETY

Safe disposal of refrigerators and preventing child entrapment.

ELECTRICAL CONNECTION SAFETY

Proper electrical connection, grounding, and avoiding extension cords/adapters.

INSTALLATION

UNIT UNCRATING AND HANDLING

Procedures and tools for uncrating and moving the unit.

ELECTRICAL INSTALLATION GUIDELINES

Specifics on wiring, voltage, and circuit requirements.

WIRE GAUGE AND LOCATION CONSIDERATIONS

Wire gauge chart and cabinet placement advice.

LEVELING AND SECURING THE UNIT

Instructions for leveling, installing castors/legs, and sealing to the floor.

SETUP

STANDARD ACCESSORIES AND SHELVING

Installing shelves and standard accessories.

DRAWER INSTALLATION AND CABINET AIRFLOW

Drawer procedures and importance of proper cabinet airflow.

OPERATION

UNIT STARTUP AND BASIC CONTROLS

Initial startup, compressor readiness, and temperature control locations.

MECHANICAL TEMPERATURE CONTROL OPERATION

How mechanical controls work, coil sensing, and sequence of operation.

ADJUSTING MECHANICAL TEMPERATURE CONTROLS

Steps for adjusting controls, including altitude corrections.

ELECTRONIC TEMPERATURE CONTROL OVERVIEW

Sequence of operation for LAE and Danfoss electronic controls.

LAE CONTROLLER FUNCTIONS AND SETTINGS

Diagnosing, locking, unlocking, changing set points, and defrost intervals.

DISPLAY AND PROBE MANAGEMENT

Changing display units and viewing probe temperatures.

MAINTENANCE, CARE, AND CLEANING

CONDENSER COIL CLEANING

Detailed steps for cleaning the condenser coil.

STAINLESS STEEL CARE AND RUST PREVENTION

Cleaning stainless steel and preventing rust.

PERIODIC MAINTENANCE AND SPECIAL COMPONENTS

Lid maintenance and cutting board care.

CHILLER HOSE MAINTENANCE

Procedure for cleaning the chiller hose.

WARRANTY INFORMATION

WARRANTY COVERAGE AND CLAIMS

Details on parts, labor, compressor warranty, and claim procedures.

WARRANTY EXCLUSIONS AND LIMITATIONS

What is not covered and limitations of the warranty.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

This document is an installation manual for True Refrigerated Food Prep units, including Undercounters, Worktops, Sandwich/Salad, Pizza Prep, and general Food Prep models. It provides comprehensive instructions for installation, setup, operation, and maintenance, ensuring efficient and trouble-free use of the commercial refrigerators.

Function Description:

The True Refrigerated Food Prep units are commercial refrigerators designed to maintain food products at optimal temperatures for preparation and storage. They are available in various configurations, including undercounters, worktops, and specialized sandwich/salad and pizza prep models. The units feature either mechanical or electronic temperature controls to regulate internal temperatures, typically set to approximately 35°F (1.6°C) for refrigerators and -10°F (-23.3°C) for freezers. The primary function is to provide reliable refrigeration, ensuring food safety and quality in commercial kitchen environments.

Important Technical Specifications:

• Refrigerant Type: Units may contain fluorinated greenhouse gases such as R134a (GWP=1,300) or R404a (GWP=3,800), or hydrocarbon refrigerant R-290. The specific type and volume are indicated on the serial label inside the cabinet.
• Electrical Requirements: Units are designed for specific voltage ratings (e.g., 115/60/1, 115/208-230/1, 208-230/60/1) and come with NEMA plugs (5-15R, 14-20R, 5-20R, 6-15R). A dedicated electrical circuit matching the unit's rating plate is recommended.
• Temperature Control:
  • Mechanical Controls: Utilize an evaporator coil sensing temperature control for off-cycle defrost. Settings range from #1 (warmest) to #9 (coldest), with #0 as the off position. Each 1/4 turn of the calibration screw adjusts temperature by approximately 2°F.
  • Electronic Controls (LAE & Danfoss): Feature adjustable set-points and differentials. The set-point determines when the compressor shuts off, and the differential is added to the set-point to determine when the compressor restarts. Defrost cycles are preprogrammed by interval or specific times, with durations ranging from 4 to 60 minutes.
• Climate Classes: Appliances are tested according to climate classes 5 and 7 for temperature and relative humidity, indicating suitability for demanding environments.
• Ventilation: Requires at least one inch between the wall and the rear of the refrigerator for proper ventilation. Freezers require three inches. Insufficient ventilation voids the warranty.
• Shelving: Designed for gravity feed TrueTrac organizers, with shelf clips hooking onto shelf standards.
• Drawer Systems: Two types of drawer systems (Set 1 and Set 2) are described, with instructions for removal and installation.
• Cutting Boards: TPP and TFP models include cutting boards, often made from Richlite material, which may require periodic turning to prevent warping.
• Chiller Hose (TSSU-27-12M-C models only): Features a flexible hose that requires periodic cleaning with a hose cleaning brush.

Usage Features:

• Pre-use Preparation: Units must run for 24 hours prior to usage to ensure proper cooling. It is recommended to run the unit empty for two to three days after installation to confirm proper electrical wiring and operation.
• Loading Guidelines: Product should be loaded carefully to avoid pressing against the back wall or coming within four inches of the evaporator housing to ensure proper air circulation.
• Temperature Adjustment: Instructions are provided for adjusting both mechanical and electronic temperature controls. For mechanical controls, adjustments are typically recommended only for high-altitude locations. Electronic controls allow for changing set-points, defrost intervals, and display readouts (Fahrenheit to Celsius).
• Manual Defrost: Electronic controls allow for initiating a manual defrost cycle if frost or ice accumulates on the evaporator coil.
• Locking Controls: Electronic controls can be locked to prevent unauthorized changes to program settings, which could affect cabinet operation.
• Light Control: Glass door models have interior lights that can be controlled by the LAE controller or an interior light switch. Solid door models typically have lights controlled by a door switch.

Maintenance Features:

• Condenser Coil Cleaning: Critical for efficient operation and warranty validity. Condensers accumulate dirt and require cleaning every 30 days or as needed using a stiff bristle brush, vacuum cleaner, CO2, nitrogen, or pressurized air. Dirty condensers can lead to compressor failure, product loss, and increased electrical costs.
• Stainless Steel Care: Emphasizes using non-abrasive tools and cleaners (alkaline, alkaline chlorinated, or non-chloride containing) to prevent scratches and corrosion. Cleaning should be done along the polish lines or "grain" of the stainless steel. Rinsing and wiping dry immediately after cleaning are recommended. Hydrochloric acid (muriatic acid) should never be used.
• Lid Maintenance: Lid pin screws should be checked periodically to ensure they are tight, as they are designed to be removable for cleaning.
• Cutting Board Maintenance: For Richlite cutting boards, periodic turning is recommended to prevent warping caused by moisture and temperature differences.
• Chiller Hose Cleaning: For TSSU-27-12M-C models, the chiller hose should be cleaned using a provided hose cleaning brush to ensure proper air circulation.
• Warranty Information: A three-year parts and labor warranty is provided for units shipped after September 1, 2015, covering defects in material and workmanship. An additional two-year compressor warranty extends coverage for hermetically and semi-hermetically sealed compressors. The warranty is voided by improper installation, lack of preventative maintenance (e.g., condenser coil cleaning), use of non-OEM parts, alteration, neglect, abuse, misuse, accident, damage during transit or installation, fire, flood, acts of God, or improper electrical connections. Product loss due to refrigeration failure is not covered.

True Manufacturing Company TPP-67 Specifications