Loren Cook Gemini User Manual

®
Gemini
Ceiling and cabinet fans
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
This publication contains the installation, operation and
maintenance procedures for standard units of the Gemini
- Ceiling and Cabinet Fans. Carefully read this publication
prior to installation.
Carefully read this publication and any
supplemental documents prior to any
installation or maintenance procedure.
Loren Cook Company’s Gemini catalog provides
additional information describing the equipment, fan
performance, available accessories and specication
data.
For additional safety information, refer to AMCA
publication 410-96, Safety Practices for Users and
Installers of Industrial and Commercial Fans.
All of the publications listed above can be obtained
from Loren Cook Company by phoning (417) 869-6474,
extension 166; by FAX at (417) 832-9431; or by e-mail at
info@lorencook.com.
For information and instructions on special equipment,
contact Loren Cook Company at (417) 869-6474.
Receiving and Inspection
Carefully inspect the fan and accessories for any
damage and shortage immediately upon receipt of fan.
• Turn the wheel by hand to ensure it turns freely and
does not bind.
• Inspect dampers (if included) for free operation of
all moving parts.
• Remove mounting brackets from packing insert &
install mounting brackets (Gemini 100 only).
• Remove shipping tape.
• Record on the Delivery Receipt any visible sign of
damage.
Handling
Lift fan by the outside housing (box) or by the blower
mounting brace. Never lift by the shaft or motor.
Storage
If the fan is stored for any length of time prior to
installation, store it in its original shipping crate and
protect it from dust, debris and the weather.
Installation
Motor Installation
All Gemini units are shipped with motors mounted at
the factory.
Gemini 100 Inline to Ceiling Conversion
The Gemini 100 series can be converted from inline
to ceiling by ordering the Inline to Ceiling Conversion Kit
from Loren Cook Company (Part Number 797180). The
kit includes all parts required, plus detail instructions on
how to convert the Gemini 100.
Gemini 100 Ceiling to Inline Conversion
The Gemini 100 series can be eld converted from
ceiling to inline by following these steps:
1. Remove and discard the inlet box end plate.
2. Install the inline cover panel with sheet metal
screws as shown on the following page.
Ceiling to Inline Conversion Kit can be ordered from
Loren Cook Company (Part Number 797181), or
fabricate the required part using the following sketch.
Gemini 100
1
Rotating Parts & Electrical Shock Hazard:
Disconnect electric power before working on unit.
Follow proper lockout / tagout procedures to ensure
the unit cannot be energized while being installed or
serviced.
A disconnect switch should be placed near the fan
in order that the power can be swiftly cut off, in case
of an emergency and in order that maintenance
personnel are provided complete control of the
power source.
Grounding is required. All eld-installed wiring
must be completed by qualied personnel. All eld
installed wiring must comply with National Electric
Code (NFPA 70) and all applicable local codes.
Failure to follow these instructions could result in
death or serious injury.

Loren Cook Gemini Specifications

General

Brand	Loren Cook
Model	Gemini
Category	Fan
Language	English

Summary

Introduction and Safety Precautions

Reading the Manual

Emphasizes reading the installation and maintenance manual before proceeding.

Safety Warnings

Highlights electrical shock and rotating parts hazards requiring power disconnection.

Installation Preparation and Handling

Receiving and Inspection

Instructions for inspecting the fan upon receipt for damage or shortage.

Handling Instructions

Guidance on proper methods for lifting and moving the fan unit.

Storage Recommendations

Advice on storing the fan unit to prevent damage and contamination.

Installation Procedures and Conversions

Motor Installation

Notes that motors are pre-mounted at the factory for all Gemini units.

Gemini 100 Inline to Ceiling Conversion

Details how to convert Gemini 100 units from inline to ceiling configuration.

Gemini 100 Ceiling to Inline Conversion

Outlines the steps for converting Gemini 100 units from ceiling to inline.

Fan Installation and Discharge

Direction of Discharge (200-900 Series)

Instructions for setting the duct collar for top or side discharge configurations.

Fan Installation Steps

Steps for mounting the fan, including housing adjustment and ductwork attachment.

Wiring Installation and Diagrams

Wiring Installation Guidelines

Compliance requirements for wiring installation with local codes and NEC.

Gemini Series Wiring Diagrams

Visual guides for connecting electrical wiring for various Gemini fan models.

Final Installation and Operation

Final Installation Steps

Checks for fasteners, voltage, ductwork, and wheel clearance before operation.

Pre-Start Checks

Essential checks, including power lockout, before starting the fan.

Start Up Procedure

Steps for initial fan start-up and monitoring of key operational parameters.

Inspection, Maintenance, and Access

Post-Operation Inspection

Inspecting fan components like bolts and setscrews after initial operation.

Grille Installation

Method for attaching the grille, including filter placement.

Maintenance Schedule

Recommended inspection frequency for cleanliness and component tightness.

Access for Gemini Models

Procedures for accessing the blower assembly for Gemini 100 and 200-700 series.

Reassembly and Troubleshooting

Reassembly Instructions

Guidance on reversing disassembly steps for proper reassembly of fan components.

Motor Bearings and Services

Information regarding pre-lubricated motor bearings and warranty service.

Troubleshooting Common Issues

Solutions for problems like low capacity, vibration, noise, and overheating.

Parts Lists

Gemini 100 Parts List

A detailed list of replacement parts for the Gemini 100 model.

Gemini 200 - 900 Parts List

A detailed list of replacement parts for Gemini 200 to 900 series models.

Warranty and Company Information

Gemini 1000 - 2000 Parts List

A detailed list of replacement parts for Gemini 1000 and 2000 series models.

Limited Warranty Policy

Explains the terms and conditions of the manufacturer's limited warranty.

Loren Cook Company Contact

Provides contact details for Loren Cook Company's corporate offices.