COOK Gemini User Manual
Gemini
6
s
atte
G
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 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 specication
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.
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.
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.
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 qualied 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.
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 two sketches.
a. Galvanized Steel
16-3/4
13-15/16
Bend up at 90o
18
1-3/8
11-15/16
14-1/16
12
13-5/16
Gemini 100
1-7/1
1
Flat P
rn
(Inches)
Finished View
Figure 1
Use foil tape on the joints
Start
Outlet
Inlet
Remove Parts
Inline
Cover
Panel
Direction of Discharge (200-900 Series)
Discharge direction can be converted from right angle to
straight line, without a kit, by swapping outer panel and
the inlet/grille: See Figure 1.
1. Remove the side panel, mounting brackets (2) and
grille (if present).
2. Place the side panel where the inlet/grille had
been. Place the mounting brackets on the edge
where the side panel had been. Holes are
prepunched for this procedure.
3. Rotate unit so that the outlet is on top.
Typical Installation
Roof
Roof jack with damper
or roof cap
x2
Replace Parts
Outlet
Inlet
Fan Installation
1. Use the mounting bracket slots to lower the
unit housing by a distance equal to the ceiling
thickness. Refer to gure 2.
2. Raise the unit, as needed to accommodate
accessories and options: If lter present, raise
Exterior
Wall
6” round duct. Insulated duct will help
absorb vibration. Use the shortest runs
Joists
Power
cord
Seal around the
unit with caulk.
Insulation around unit.
Also, cover the fan with insulation.
to ensure a good seal.
possible & long radius elbows.
Wall cap
with damper
or
Short (1’) piece of flexible duct
will absorb vibration & noise.
2
unit 3/8”. If lter and deluxe aluminum grille are
Mounting
Filter (optional)
Ceiling
Grille
both present, raise unit 7/8”, due to the 1/2” grate
protrusion on the aluminum grille. If lter is not
present: the grate on the aluminum grille will t inside
of the unit (except sizes 160 & 180). Other grilles have
no protrusion and t ush with the fan.
3. Fasten duct work to the outside of the duct collar
(damper frame) using sheet metal screws and foil
tape. Make sure sheet metal screws are placed
where they do not interfere with damper operation.
4. Fasten the housing to the bottom of the joists
through the holes provided in the mounting bracket.
For Ceiling Radiation Damper Installation
see separate document “Gemini/CRD
Installation Supplement.”
Figure 2
Unit Housing
Joists
Bracket
Grate Protrusion (aluminum grille only)
Wiring Diagrams
Gemini 100 Series:
Cap off wire that is not in use.
Red Wire (Low Speed)
Black Wire (High Speed)
Green Wire
(Ground by COOK)
White Wire
(Common)
For fan power supply connection use 4-wire cable
provided in eld wiring box shown above. Connect eld
ground wire to green ground screw located inside fan
electrical box. Connect one supply line to white wire.
Depending on fan speed requirements connect other
supply line to Red wire for Low Speed or Black wire
for High Speed. Insulate unused Red or Black wire.
Replace electrical box cover. Model 126, 146, 166, 186
are Low Speed. Models 128, 148, 168, 188 are High
Speed.
Gemini 200, 300, 500, 600 and 700 Series:
White Line
Ground Screw for
Field Grounding
Notice! Do not install above or around
cooking equipment (shaded area)
O
45
O
Cooking
Equipment
45
Floor
Wiring Installation
All wiring should be in accordance with local
ordinances and the National Electrical Code, NFPA 70.
Ensure the power supply (voltage, frequency, and current
carrying capacity of wires) is in accordance with the
motor nameplate. Refer to Wiring Diagrams.
Lock out all power sources before unit is wired to power
source.
Follow the wiring diagram in the disconnect switch and
the wiring diagram provided with the motor. Correctly
label the circuit on the main power box and always
identify a closed switch to promote safety (i.e., red tape
over a closed switch).
Note: Insulate Unused Leads. Fan plug box is designed
for single speed operation, using an FSC to vary speed if
required. Do not wire to more than two leads.
Black (High)
Red (Low)
Line
Electrical Shock & Fire Hazard:
Insulate Unused Lead
Failure to follow these instructions could result in
death or serious injury.
Gemini 400 Series:
White Line
Black Line
Wiring continued on the next page.
3
Loading...