Remcor Gemini Installation 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.
Loren Cook catalog, Gemini, provides additional information describing the equipment, fan performance, available
accessories and specification 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 the 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 (Gem-
ini 100 only).
• Gemini 100 - install mounting brackets as shown in
Figure 6.
• 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.
Personal Safety
Disconnect switches are recommended. Place
the disconnect switch 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.
Direction of Discharge (200-900 Series)
The duct collar (damper frame), for fastening a standard
duct, is located so discharge will be from the top. Refer to
figure 1 on page 2. When discharge from the side is desired,
follow these steps:
a. Remove the side panel and install with the duct collar in
the side position. Refer to figure 2 on page 2.
b. Move the mounting bracket from the top discharge to
the side discharge position for securing the housing to
the joists. Refer to figures 1 and 2 on page 2.
Gemini 100 Ceiling to Inline Conversion
The Gemini 100 series can be field converted from ceiling
to inline by following these steps:
a. Remove and discard the inlet box end plate. See page
7, Parts List illustration.
b. Install the inline cover panel with sheet metal screws as
shown in figure 9 on page 7.
c. Ceiling to Inline Conversion Kit can be ordered from
Loren Cook Company (Part Number 797181), or fabricate the required part using the sketch provided on
page 7, figure 10.
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.
WARNING
This unit has rotating parts. Safety precautions
should be exercised at all times during installation,
operation, and maintenance.
ALWAYS disconnect power prior to working on fan.
Installation
Motor Installation
All Gemini units are shipped with motors mounted at the
factory.
Gemini 100
Do not install above or inside shaded area
45
Cooking
Equipment
45
Floor
Fan Installation
a. Fasten duct work to the outside of the duct collar
(damper frame) using sheet metal screws. Make sure
sheet metal screws are placed where they do not interfere with damper operation.
b. Fasten the housing to the bottom of the joists through
the holes provided in the mounting bracket. Refer to
figures 1 and 2.
c. Adjust housing, using the adjust mounting bracket pro-
vided, to allow for the thickness finished ceiling and
grille. Refer to figure 3. If a unit is furnished with filters
allow 3/8” for filters. Refer to figure 4.
Outlet
Box
Mounting
Brackets
Side
Panel
Mounting
Brackets
Exhaust
Duct Collar
Side
Panel
Intake
Figure 1
Duct Collar
Exhaust
Side Discharge
Intake
Figure 2
Mounting
Bracket
Ceiling Radiation Damper Installation (See Gemini/CRD
Installation Supplement)
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 the Wiring Diagrams, on page 4.
Lock off all power sources before unit is wired to
power source.
Personal Safety
Disconnect switches are recommended. Place the
disconnect switch 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.
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).
Allow 3/8"
for filter
SEE NOTE
Grill
Knurled Screw
Note: Allow for ceiling thickness
Suggested Installation: Unit without filter.
Figure 3
Mounting
Bracket
SEE NOTE
Filter
Grill
Knurled Screw
Note: Allow for ceiling thickness
Suggested Installation: Unit with filter
Figure 4
2
Final Installation Steps
a. Inspect fasteners and setscrews, particularly fan
mounting fasteners, and tighten according to the recommended torque shown in the table,
Recommended Torque for Setscrews/Bolts.
b. Inspect for correct amperage and voltage with an
ammeter and voltmeter.
c. Ensure blower is secured to duct work.
d. Ensure all accessories are installed.
e. Inspect wheel-to-inlet clearance. Make sure wheel
does not rub against the inlet.
f. Test the fan to be sure the rotation is the same as indi-
cated by the arrow marked Rotation.
Do not allow the fan to run in the wrong direction.
This will overheat the motor and cause serious damage. For 3-phase motors, if the fan is running in the
wrong direction, check the control switch. It is possible to interchange two leads at this location so that the
fan is operating in the correct direction.
Operation
Pre-Start Checks
a. Lock out all the primary and secondary power sources.
b. Inspect fasteners and setscrews, particularly those
used for mounting the fan, and tighten if necessary.
c. Inspect motor wiring.
d. Ensure fan and ductwork are clean and free of debris.
e. Test the fan to ensure the rotation of the wheel is the
same as indicated by the rotation label.
f. Restore power to unit.
the holes provided in the filter frame.
Maintenance
Establish a schedule for inspecting all parts of the fan.
The frequency of inspection depends on the operating conditions and location of the fan.
Fans exhausting contaminated air (airborne abrasives)
should be inspected every three months.
Regular inspections are recommended for fans exhausting non-contaminated air.
It is recommended the following inspections be conducted twice per year.
• Inspect bolts and setscrews for tightness. Tighten as
necessary.
• Inspect for cleanliness. Clean exterior surfaces only.
Removing dust and grease on motor housing assures
proper motor cooling.
Grille
Mounting
Hole
Mounting
Brackets
Start Up
Before attaching the grille, turn the fan on and inspect for
the following:
• Direction of rotation.
• Excessive vibration.
• Unusual noise.
• Motor noise.
• Improper motor amperage or voltage.
If a problem is discovered, immediately shut off the
fan. Lock out all electrical power and check for the
cause of the trouble. Refer to Troubleshooting, page 6.
Inspection
Inspection of the fan should be conducted at the first 30
minute interval of satisfactory operation. During the
inspection, stop the fan and inspect as per directions
below.
30 Minute Interval
Inspect bolts, setscrews, and motor mounting bolts.
Adjust and tighten as necessary.
Grille Installation
Attach the grille by hand-tightening the knurled screws.
When the unit is furnished with a filter, place the knurled
screws through the hole in the grille. Install the filter through
Plug-in Receptacle
Figure 6 - Gemini 100 Series Components
Access
Gemini 100
To inspect, clean or repair refer to figure 6 and follow
these steps:
a. Remove grille.
b. Remove blower assembly from housing:
1. Disconnect the motor from electrical supply.
2. Remove the mounting bolts on the inlet plate
assembly and remove the motor/wheel assembly.
c. Remove the blower wheel with an allen wrench.
Gemini 200 - 700 series
To inspect, clean, or repair, refer to figure 7 and follow
these steps:
a. Remove grille.
b. Remove blower assembly from housing:
1. Disconnect the motor from electrical supply.
2. Remove mounting bolts.
3. Slide discharge flange out of spring clip and remove
motor/blower assembly from box.
c. Remove inlet ring from blower housing.
d. Remove blower wheel with an allen wrench.
3
Loading...