Phcbi PF-L5181W-PA - User Manual

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document describes the PHCbi Laboratory Freezer, model PF-L5181W-PA, a laboratory freezer designed for indoor use. It is intended for storing temperature-sensitive materials such as vaccines and biological products within a controlled environment.

Function Description:

The PF-L5181W-PA is a laboratory freezer that maintains a consistent temperature within its chamber through forced air circulation. Its primary function is to provide a stable, low-temperature environment for the safe storage of various laboratory materials. The unit features a microprocessor control system for precise temperature management and a digital display for monitoring the chamber temperature. It also incorporates several alarm and safety functions to ensure the integrity of stored contents and the safety of personnel.

Important Technical Specifications:

Model Number: PF-L5181W-PA (Solid Door)
External Dimensions: 34 5/32" H x 23 27/32" W x 23 21/32" D (867 H mm x 606 W mm x 600 D mm)
Internal Dimensions: 25 19/32" H x 19 15/16" W x 17 3/32" D (650 H mm x 507 W mm x 434 D mm)
Effective Capacity: 5.01 Cubic Feet (142 liters)
Exterior: White PCM Galvanized steel, polyester resin baked finish
Interior: HFO Vacuum formed plastic
Door: Electro Galvanized Steel
Insulation: HFO foamed-in place
Shelves: 3 coated steel wire shelves, each 19 6/32" W x 14 3/4" D (487 W mm x 375 D mm), with a maximum load capacity of 33 lbs. (15 kg). The shelves are fixed and not adjustable.
Access Port: 1 port on the right side, inner diameter 1 3/16" (30 mm), for external temperature sensor installation.
Cooling Method: Forced air circulation
Compressor: Reciprocal type, output: 40 W
Evaporator: Flat Fin type
Condenser: Wire Type
Refrigerant: R600a; 52g (0.114lbs).
Defrosting: Manual defrosting
Temperature Controller: Microprocessor control system
Temperature Display: Digital display
Temperature Control Range: -20°C ± 5°C (Guaranteed temperature with no load at an ambient temperature of 22°C is -15 to -25°C).
Rated Voltage: 115 V AC
Rated Frequency: 60 Hz
Power Consumption: 106 kWh per year (based on NSF/ANSI 456 Vaccine Storage standard, tested at 22°C ambient room temperature with 25-75% relative humidity).
Memory Backup: Nonvolatile memory
Weight: 121 lbs. (55 kg) with solid door
Accessories: 1 set of key
Option: Stackable kit, part number 833-0-3131-102-00
Climatic Class: 7
UL Rating: SA5086 Vol. 1

Usage Features:

Control Panel: The front-mounted control panel displays the operation status and allows for temperature setting. It includes keys for "Buzzer" (to silence alarms), "Alarm Test," "Defrost," and "Set." Up and Down arrow keys facilitate temperature adjustments and offset calibration. Indicator lamps for "Door" (lit when open) and "Alarm" (lit during alarm conditions) provide visual feedback.
Temperature Setting: The unit is factory preset to -20°C, an optimal storage temperature for vaccines and biological products. Users can adjust the temperature within a range of -15°C to -25°C using the "Set" and arrow keys.
Key Lock Operation: A key lock feature is integrated to prevent unauthorized tampering with the control panel settings. This feature can be activated or deactivated by pressing and holding the Up Arrow key for about 5 seconds.
Door Lock: A physical door lock is provided, requiring a key to secure the door, enhancing the security of stored contents.
Magnetic Door Gasket: Ensures a tight seal for optimal performance and temperature uniformity, contributing to energy efficiency.
Adjustable Legs: Allows for leveling the freezer on uneven surfaces, which is crucial for proper operation and to prevent vibration and noise.
Stacking Capability: The unit can be stacked with another compatible freezer or refrigerator (PR-L5181*, SR-L6111W-PA, or SF-L6111W-PA) using an optional stacking accessory kit (part number 833-0-3131-102-00) to maximize floor space efficiency. Specific instructions must be followed for safe stacking.
Access Port: Facilitates the installation of external temperature sensors for independent monitoring of the chamber temperature. It is important to reseal the port after use to maintain temperature uniformity and prevent condensation.
Door Open Sensor: Triggers an alarm if the door remains open for more than two minutes, helping to prevent temperature excursions.

Maintenance Features:

Cleaning: Regular cleaning (monthly) of both the interior and exterior surfaces is recommended using a diluted neutral dishwashing detergent. Avoid abrasive cleaners, solvents, or hot water, as these can damage the unit's finish and components.
Condenser Coil Cleaning: The condenser coils, located behind the base grille (kickplate), should be cleaned regularly (e.g., every other month) to maintain energy efficiency. Access to the coils is gained by removing two screws and detaching the base grille.
Manual Defrost: The freezer features manual defrosting. When defrosting is required, contents should be transferred to another freezer. Cotton bath towels should be placed at the bottom of the chamber to absorb defrost water. Physical removal of ice is discouraged to prevent damage to the evaporator.
Safety Check Sheet: For repair or maintenance requests, a safety check sheet must be prepared, detailing any hazardous materials stored in the unit and any contamination present, to ensure the safety of service personnel.
Disposal: When disposing of the unit, it must be handled by appropriate personnel. The doors should be removed to prevent child entrapment and suffocation.
Compressor Protection: After unplugging or power interruption, a minimum 5-minute waiting period is required before restarting the unit to protect the compressor from damage.