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    P/N  E207093  Rev. 1

OPERATING

AND

INSTALLATION

MANUAL

CF Series II

CENTRIFUGAL FAN PRODUCT COOLERS 

TABLE OF CONTENTS

TABLES

FIGURES

 

RECEIPT OF EQUIPMENT


INSPECTION

All equipment should be carefully checked for damage or shortages
as soon as it is received.  Each shipment should be carefully checked
against the bill of lading.  If any damage or shortage is evident,
a notation must be made on the delivery receipt before it is signed
and a claim should then be filed against the freight carrier. 
Inspection and claims are the responsibility of the recipient.

A large multi-belt sheave should be mounted to the end of the fan
shaft.  Rotate fan shaft by hand to be sure the fan shaft has not
bent during shipment, and that the fans do not strike the housing.

LOSS OF GAS HOLDING CHARGE

Each copper, steel, and stainless steel tube CF Series II unit is
leak tested, evacuated to remove moisture and then shipped with a gas
holding charge. Absence of this charge may indicate a leak has developed
in transit.  The system should not be charged with refrigerant
until it is verified that there is no leak, or the source of the leak
is located.  If the unit contains aluminum tubes or flanged refrigerant
connections, the unit is leak tested and evacuated but a gas holding
charge is not provided.

ASSEMBLY OF COMPONENTS


SHIPPED LOOSE PARTS

Motor  (with sheave attached), Bolts, Nuts, and Washers

   (on small units the motor may be factory mounted)

Drive Belts  (strapped to fan sheave)

Belt Guard, Bolts, and Washers  (bolts and washers are located
in their final assembly holes on fan cabinet)

Water Defrost Splash Guards  (may be factory mounted)

Dielectric Flange Union with required bolts, nuts, and gaskets (if
the coil contains Aluminum tubes)

Air Filters  (optional item supplied by others)

Optional Air Directional Louvers with Required Assembly Bolts, Nuts,
and Washers

MOTOR

If the motor is factory mounted, make sure
the fan shaft contains a factory mounted sheave.  If the motor
is shipped loose, mount the motor onto the adjustable motor mount that
is already on the fan cabinet using the provided bolts, nuts, and washers. 
After attachment to the unit the motor shaft should be facing away from
the fan cabinet.

WARNING:  Make sure the motor and fan sheaves
are aligned and parallel with each other (belt manufacturer recommends
alignment within 0.5°).  Using a long straight edge, lay the straight
edge against the faces of the sheaves.  If each sheave contacts
the straight edge in two places the sheaves are lined up.  See
Figure 1.

WARNING:  Make sure the unit is electrically
grounded.  Newer drain piping and electrical conduit may not be
metal, or attached to a support that is grounded.

BELT ATTACHMENT

The motor mount adjusting screw needs to be fully CLOSED.  Wrap
one belt around the outer most groove on the fan sheave then wrap the
belt around the outer most groove of the motor sheave.  Belts should
never be forced over sheaves.  Typically a CF Series II unit uses
sheaves with two or more grooves, requiring that the belt be moved to
the inner most groove.  Move the belt on the motor sheave over
one groove, then move the belt on the fan sheave over one groove. 
Repeat moving the belt in a similar manner until the first belt is in
the inner most groove of both sheaves.  Repeat the belt attachment
procedure for each belt until every sheave groove contains a belt.

BELT TENSIONING

Turn the motor mount adjusting screw(s) so that the motor tilts away
from the fan shaft, tightening the belts.  The amount of belt free
play should be the distance between the sheave centers divided by 64,
when the motor mount is properly adjusted.

Figure 1  Sheave
Alignment and Free Play

BELT GUARD

The belt guard attachment bolts have been shipped in place on the
fan cabinet sheetmetal.  Remove the bolts and washers before positioning
the belt guard.  Align the hole in one of the belt guard mounting
brackets with the pre-installed nut in the fan cabinet sheetmetal. 
Partially screw in the bolt and washers to use as a pivot, then align
the other brackets to rest of the nuts and screw in the rest of the
bolts and washers.  Tighten bolts snuggly.

BEARING GREASE

The fan shaft bearings are greased at the factory before shipment.

WATER DEFROST SPLASH GUARD

If the water defrost splash guard is shipped loose, align the holes
in the guard to the holes on the bottom horizontal support angle on
the air inlet side of the evaporator.  Use the bolts and nuts provided
with the splash guard to hold it in place.

DIELECTRIC FLANGE UNION

Aluminum tube evaporators have aluminum flanged refrigerant connections. 
A dielectric flange union to attach steel pipe to the aluminum evaporator
flange is provided in a separate box.  The box should contain dielectric
bolt gaskets, bolts, nuts, flange gasket, and mating steel socketweld
flange.  To avoid material damage during assembly, preweld a length
of refrigerant pipe to the steel flange before assembly to the aluminum
flange.  See Section 6.2 for the aluminum to steel flange assembly
drawing.

AIR FILTERS

The unit drawing supplied with the unit shows the air filter orientation
within the filter section.  Install the filters from one side by
opening the access door and sliding the correct height filter onto each
of the tracks.  Insert the next filter onto the track, pushing
the first filter further into the unit.  Continue adding filters
until the first filter contacts the opposite closed access door. 
Repeat for each track.  To replace the filter set open both access
doors and slide the new filters onto each of the tracks, pushing the
old filters out of the unit at the opposite end.

AIR DIRECTIONAL LOUVERS

The FL Series unit may have optional Air Directional Louvers supplied. 
The louvers for each fan outlet are assembled, but shipped loose from
the unit.  The installer should attach the louver assembly so that
the louver direction matches the unit drawing.  Bolts, nuts, and
washers are supplied with the assembly.