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HMD IO&M

B51242-002

Limited Warranty

Loren Cook Company warrants that your Loren Cook fan was manufactured free of defects in materials and workmanship, to the extent stated herein. 

For a period of one (1) year after date of shipment, we will replace any parts found to be defective without charge, except for shipping costs which will be 

paid by you. This warranty is granted only to the original purchaser placing the fan in service. This warranty is void if the fan or any part thereof has been 

altered or modified from its original design or has been abused, misused, damaged or is in worn condition or if the fan has been used other than for the 

uses described in the company manual. This warranty does not cover defects resulting from normal wear and tear. To make a warranty claim, notify Loren 

Cook Company, General Offices, 2015 East Dale Street, Springfield, Missouri 65803-4637, explaining in writing, in detail, your complaint and referring to 

the specific model and serial numbers of your fan. Upon receipt by Loren Cook Company of your written complaint, you will be notified, within thirty (30) 

days of our receipt of your complaint, in writing, as to the manner in which your claim will be handled. If you are entitled to warranty relief, a warranty ad-

justment will be completed within sixty (60) business days of the receipt of your written complaint by Loren Cook Company. This warranty gives only the 

original purchaser placing the fan in service specifically the right. You may have other legal rights which vary from state to state. For fans provided with 

motors, the motor manufacturer warrants motors for a designated period stated in the manufacturer’s warranty. Warranty periods vary from manufacturer 

to manufacturer. Should motors furnished by Loren Cook Company prove defective during the designated period, they should be returned to the nearest 

authorized motor service station. Loren Cook Company will not be responsible for any removal or installation costs.

Corporate Offices:   2015 E. Dale St. Springfield, MO 65803
Phone 417-869-6474  |  Fax 417-862-3820  |  lorencook.com

February 2017

Summary of Contents for HMD

Page 1: ...n powered fan the impeller can rotate which is referred to as windmill ing Windmilling will cause hazardous conditions due to unexpected rotation of components Impellers should be blocked in position...

Page 2: ...tandard for Repair Garages ANSI NFPA 88B and with CAN CSA B149 1 Natural Cas and Propane Installation Codes NOTICE Adequate building relief shall be provid ed so as to not over pressurize the building...

Page 3: ...th local codes or in the absence of local codes in ac cordance with the National Fuel Gas Code ANSI 2223 1 NFPA 54 or the CAN CSA B149 1 Natural Cas and Propane Installation Code NOTICE When a duct wo...

Page 4: ...he Reference section for location of optional components Heating Inlet Air Sensor Typical setting 60 70 F Building Freeze Protection Typical setting 45 F Dirty Filter Gauge Typical setting Settings va...

Page 5: ...ing probe high 14 Pressure sensing probe low 15 Temperature controller 16 Thermostat to blower 17 Safety Shut off valve 18 Pressure gauge 19 Gas valve 20 Modulating gas valve 21 Pressure gauge 22 Safe...

Page 6: ...entered in the opening until the required pressure is obtained The pressure drop was set at the factory and may not need adjust ment When required pressure is obtained be sure to reconnect the outer s...

Page 7: ...re installed they can be checked by holding up to a light source If light cannot pass through the filter it should be replaced When reinstalling filters be sure to install them with the airflow in the...

Page 8: ...inal 2 Is there 120 VAC between terminal blocks 1 5 Is there 120 VAC between across A1 A2 on supply contactor 1 Replace fan belt if broken 2 Repair or replace motor or capacitor if needed 3 Repair mot...

Page 9: ...n the wrong direction If the blower is rotating in the wrong direction the unit will move some air but will not perform as designed Is the motor voltage correct Is the motor horse power too low Shorte...

Page 10: ...as needed 2 Install automatic belt tensioner if possible Adjust the drives as needed Consult factory Measure the unit s air volume cfm and compare it with its rated air volume If the measured air vol...

Page 11: ...volume If the measured air volume is wrong adjust the fan s RPM by changing adjusting the drive The most accurate way to measure the air volume is by using a Pitot traverse method downstream of the b...

Page 12: ...Clean or replace filters as needed Are the sheave aligned Is the wheel unbalanced Are the filters dirty clogged Are the bearings worn or do they need lubrication Yes Yes Yes Yes Yes 1 Replace or tigh...

Page 13: ...CFM Static Pressure chart on page 8 If needed evenly adjust the baffles keeping the burner centered in the opening until the required pressure is obtained The pressure drop was set at the factory and...

Page 14: ...until the required pressure is obtained The pressure drop was set at the factory and may not need adjustment When required pressure is obtained be sure to reconnect the outer sensing probes This proc...

Page 15: ...15 B51242 002 HMD IO M Service Contacts Dealer Installation Contractor Service Contractor Date of Installation Name Address Phone Name Address Phone Name Address Phone...

Page 16: ...to the specific model and serial numbers of your fan Upon receipt by Loren Cook Company of your written complaint you will be notified within thirty 30 days of our receipt of your complaint in writing...

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