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Open Plenum Array

2

Receiving

Upon receiving the product check to ensure all items 
are accounted for by referencing the delivery receipt or 
packing list. Inspect each crate or carton for shipping 
damage before accepting delivery. Alert the carrier 
of any damage detected. The customer will make 
a notation of damage (or shortage of items) on the 
delivery receipt and all copies of the bill of lading which 
is countersigned by the delivering carrier. If damaged, 
immediately contact the local sales representative. Any 
physical damage to the unit after acceptance is not the 
responsibility of the manufacturer.

Unpacking

Verify that all required parts and the correct quantity of 
each item have been received. If any items are missing 
report shortages to arrange for obtaining missing parts. 
Sometimes it is not possible that all items for the unit 
be shipped together due to availability of transportation 
and truck space. Confirmation of shipment(s) must be 
limited to only items on the bill of lading.

Handling

Arrays are to be rigged and moved by the lifting 
brackets provided or by the skid when a forklift is 
used. Location of brackets varies by model and size. 
Eight-foot extended forks are required. Handle in such 
a manner as to keep from scratching or chipping the 
coating. Damaged arrays may reduce the ability of the 
fan to resist corrosion. Arrays should never be lifted 
by the shaft, motor, damper, inlet or outlet guard or 
accessories.

Storage

•  Do not store outdoors
•  Rotate the wheel monthly
•  Energize the motor once every three months
•  Store unit in location which does not have vibration
If storage of fan is in a humid, dusty or corrosive 
atmosphere, rotate the fan once a month. Improper 
storage which results in damage to the array will void 
the warranty.
Arrays are protected against damage during shipment. 
If the unit cannot be installed and operated immediately, 
precautions need to be taken to prevent deterioration of 
the unit during storage. The user assumes responsibility 
of the fan and accessories while in storage. The 
manufacturer will not be responsible for damage during 
storage. These suggestions are provided solely as a 
convenience to the user.
The ideal environment for the storage of the array 
and accessories is indoors, above grade, in a low 
humidity atmosphere which is sealed to prevent the 
entry of blowing dust, rain, or snow. Temperatures 
should be evenly maintained between 30°F 

(-1°C)

 

and 110°F 

(43°C)

 (wide temperature swings may 

cause condensation and “sweating” of metal parts). 
All accessories must be stored indoors in a clean, dry 
atmosphere.
Remove any accumulations of dirt or debris and 
wipe clean before moving to indoor storage. To avoid 
“sweating” of metal parts, allow cold parts to reach 
room temperature. To dry parts and packages use a 
portable electric heater to get rid of any moisture build 
up. Leave coverings loose to permit air circulation and 
to allow for periodic inspection.
The unit should be stored at least 3-1/2 in. 

(89 mm)

 off 

the floor on wooden blocks covered with moisture proof 
paper or polyethylene sheathing. Aisles between parts 
and along all walls should be provided to permit air 
circulation and space for inspection.

Inspection & Maintenance during Storage

While in storage, inspect array once per month. Keep a 
record of inspection and maintenance performed.
If moisture or dirt accumulations are found on parts, 
the source should be located and eliminated. At each 
inspection, rotate the wheel by hand ten to fifteen 
revolutions to distribute lubricant on motor.
Machined parts coated with rust preventive should be 
restored to good condition promptly if signs of rust 
occur. Immediately remove the original rust preventive 
coating with petroleum solvent and clean with lint-free 
cloths. Polish any remaining rust from surface with 
crocus cloth or fine emery paper and oil. Do not destroy 
the continuity of the surfaces. Wipe clean thoroughly 
with Tectyl

®

 506 (Ashland Inc.) or the equivalent. 

For hard to reach internal surfaces or for occasional 
use, consider using Tectyl

®

 511M Rust Preventive or 

WD-40

®

 or the equivalent.

Removing from Storage

As the arrays are removed from storage to be installed 
in their final location, they should be protected and 
maintained in a similar fashion, until the fan equipment 
goes into operation.
Prior to fully assembling and installing the array and 
system components, inspect the array assembly to 
make sure it is in working order.
1.  Check all fasteners, set screws, wheel, motors and 

accessories for tightness.

2.  Rotate the wheel by hand and assure no parts are 

rubbing.

3.  Ensure proper wheel settings for radial gap and 

alignment. See page 6.

Summary of Contents for OPA

Page 1: ...ser le moteur refroidir avant toute maintenance ATTENTION Faire preuve de précaution dans les atmosphères explosives Only qualified personnel should install this array Personnel should have a clear understanding of these instructions and should be aware of general safety precautions Improper installation can result in electric shock possible injury due to coming in contact with moving parts as wel...

Page 2: ...he array and accessories is indoors above grade in a low humidity atmosphere which is sealed to prevent the entry of blowing dust rain or snow Temperatures should be evenly maintained between 30 F 1 C and 110 F 43 C wide temperature swings may cause condensation and sweating of metal parts All accessories must be stored indoors in a clean dry atmosphere Remove any accumulations of dirt or debris a...

Page 3: ...protect personnel Refer to local codes for requirements as to the number type and design Fully secure the wheel before performing any maintenance The wheel may start free wheeling even if all electrical power has been disconnected Before the initial start up or any restart check the following items to make sure that they are installed and secure Do not spin the wheel faster than the maximum catalo...

Page 4: ... others All supply and or signal wiring should be secured to the array structure CAUTION When installing an array ensure the proper protective devices are used to protect personnel from moving parts and other hazards A complete line of protective accessories are available from the manufacturer Installation Example of Shim Stock Electrical Connections Before electrical connections are made the supp...

Page 5: ...77 Taper Lock Bushing Installation Removal To Install Taper Lock Bushings 1 Clean shaft bore and outside of bushing and bore of hub taking bushings from hub if already assembled Remove any oil grease and dirt 2 Place hub onto shaft Slip bushing onto shaft and into hub Oil threads and points of setscrews or threads and under heads of capscrews DO NOT lubricate the hub bore or the outside of the bus...

Page 6: ...rews and locking collars on the array bearings drive motor base and accessories for tightness 5 Rotate the wheel by hand and assure no parts are rubbing Remove any dirt or debris that may have accumulated during installation 6 Check all guarding if supplied for being securely attached and not interfering with rotating parts 7 Check all electrical connections for proper attachment 8 Check for obstr...

Page 7: ...or at least bumped every thirty days It is preferred that each array is run as this causes all electrical and mechanical components to get up to temperature displacing any formed condensation redistributes load on bearings and redistributes grease in the bearings motor and shaft bearings CAUTION Always check the fan RPM when adjusting the operating frequency Do not exceed maximum class fan RPM of ...

Page 8: ...el rubbing inlet Adjust wheel and or inlet cone Tighten wheel hub or bearing collars on shaft Wheel unbalance Clean all dirt off wheel Check wheel balance rebalance in place if necessary Low CFM Fan Check wheel for correct rotation Increase fan speed Duct system Check duct installations with poor inlet or discharge configurations High CFM Fan Decrease fan speed High Horsepower Fan Check rotation o...

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