Cook ERV User Manual download pdf (Page 10)

System Start-Up

Start Up

Turn the fan on, and inspect for the following:

• Direction of rotation.

• Excessive vibration.

• Unusual noise.

• Bearing noise.

• Improper belt alignment or tension (listen for squeal-

ing).

• Improper motor amperage or voltage.

If a problem is discovered, immediately shut the fan

off. Lock out all electrical power and check for the

cause of the trouble. See Troubleshooting.

Inspection

Inspection of the fan should be conducted at the first 30

minute, 8 hour and 24 hour intervals of satisfactory opera-

tion. During the inspections, stop the fan and inspect as per

the Conditions Chart.

30 Minute Interval

Inspect bolts, setscrews, and motor mounting bolts.

Adjust and tighten as necessary.

8 Hour Interval

Inspect belt alignment and tension. Adjust and tighten as

necessary.

24 Hour Interval

Inspect belt tension on both blowers and energy wheel

drive belt. Adjust and tighten as necessary.

Unit Maintenance

Intake Hood Filters

Filter inspection and cleaning intervals can vary from

once a week to twice per year depending on contaminants

present and acceptable pressure drops across the filter.

Under most conditions filters may be cleaned with hot water

and a mild soap solution (such as dish washing liquid) or

steam. Some caustic cleaners will damage the filter. If in

doubt, please consult the factory for a compatibility list.

High pressure spray washers should be limited to 2,000

psi operating pressure. Every attempt should be made to

remove the contaminants from the filter in a “backwash”

flow (note airflow arrow on the filter frame). Once the filter is

dry, it may be returned to the appropriate filter racks in the

same orientation (airflow direction) as they were removed.

Return Air/Intake Air Disposable Filters

If filters are excessively dirty, replace.

Routine Maintenance

Establish a schedule for inspecting all parts of the fan.

The frequency of inspection depends on the operating con-

ditions and location of the fan.

It is recommended the following inspection be conducted

twice per year.

• Inspect bolts and setscrews for tightness. Tighten as

necessary.

• Inspect belt wear and alignment. Replace worn belts

with new belts and adjust alignment as needed. Refer

to Belt and Pulley Installation, page 9.

• Bearings should be inspected as recommended in the

Conditions Chart.

• Inspect filters by removing filter access door.

• Inspect springs and rubber isolators for deterioration and

replace as needed.

• Inspect for cleanliness. Clean exterior surfaces only.

Removing dust and grease on motor housing assures

proper motor cooling. Removing dirt from the wheel and

housing prevent imbalance and damage.

Motor Bearings

Motor bearings are pre-lubricated and sealed. Under nor-

mal conditions they will not require further maintenance for a

period of ten years. However, it is advisable to have your

maintenance department remove and disassemble the

motor, and lubricate the bearings after three years of opera-

tion in excessive heat and or in a contaminated airstream

consisting of airborne abrasives.

Lubrication - Fan Bearings

Vane Axial bearings are lubricated through a grease fitting

on the exterior of the fan housing and should be lubricated

by the schedule, Lubrication Conditions Chart.

Before lubricating, the grease nipple and immediate vicin-

ity should be thoroughly cleaned without the use of high

pressure equipment. The grease should be supplied slowly

as the bearing rotates until fresh grease slips past the seal.

Excessive pressure should be avoided to prevent seal dam-

age.

Use no more than three injections with a hand-operated

grease gun.

Exceptions to the greasing interval chart:

• Periodic Applications (any break of one week or

more): it is recommended that full lubrication be performed

prior to each break in operation.

• Higher Temperature: it is recommended to halve the

intervals for every 30F increase in operating temperature

above 120F not to exceed 230F for standard bearings;

High Temperature bearings (optional) can operate up to

400F.

• Vertical Shaft: it is recommended that the intervals

should be halved.

Loren Cook Company uses petroleum lubricant in a lith-

ium base. Other types of grease should not be used unless

the bearings and lines have been flushed clean. If another

type of grease is used, it should be a lithium-based grease

conforming to NLGI grade 2 consistency.

A NLGI grade 2 grease is a light viscosity, low-torque,

rust-inhibiting lubricant that is water resistant. Its tempera-

ture range is from -30F to +200F and capable of intermit-

tent highs of +250F. For temperatures above 250

Mobiltemp SHC 32 is recommended.

Conditions Chart

RPM Temperature

Fan

Status

Greasing

Interval

100 Up to 120°F Clean 6 to 12 months

500 Up to 150°F Clean 2 to 6 months

1000 Up to 210°F Clean 2 weeks to 2 months

1500 Over 210°F Clean Weekly

Any

Speed

Up to 150°F Dirty 1 week to 1 month

Any

Speed

Over 150°F Dirty Daily to 2 weeks

Any

Speed

Any Temperature Very Dirty Daily to 2 weeks

Any

Speed

Any Temperature

Extreme

Conditions

Daily to 2 weeks

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16

Comments to this Manuals

No comments

Cook ERV User Manual Page 10

Comments to this Manuals

Related products and manuals for Kitchen Cook ERV