Greenheck ERM-52 Maintenance Manual

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Document 456785

Model ERM-36 and 52

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Energy Recovery Modules

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.

Energy Recovery Technical Support

Call 1-800-240-0870

General Safety Information

Only qualified personnel should install this system.
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 well as other potential hazards. Other
considerations may be required if high winds or seismic
activity are present. If more information is needed,
contact a licensed professional engineer before moving
forward.

DANGER

Always disconnect power before working on or near
this equipment. Lock and tag the disconnect switch or
breaker to prevent accidental power up.

CAUTION

When servicing the unit, the internal components may
be hot enough to cause pain or injury. Allow time for
cooling before servicing.

CAUTION

Precaution should be taken in explosive atmospheres.

1. Follow all local electrical and safety codes, as well as
the National Electrical Code (NEC), the National Fire
Protection Agency (NFPA), where applicable. Follow
the Canadian Electric Code (CEC) in Canada.

2. All moving parts must be free to rotate without
striking or rubbing any stationary objects.

3. Unit must be securely and adequately grounded.

4. Do not allow the power cable to kink or come in
contact with oil, grease, hot surfaces or chemicals.
Replace cord immediately if damaged.

5. Verify that the power source is compatible with the
equipment.

6. Never open access doors to the unit while it is
running.

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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 your Sales Representative. Any
physical damage to the unit after acceptance is not the
responsibility of 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 your local representative 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

Units 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. Handle in such
a manner as to keep from scratching or chipping the
coating. Damaged finish may reduce ability of unit to
resist corrosion.

Storage

Units 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 unit 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.

INDOOR — The ideal environment for the storage of

units 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, water, ice, or snow
and wipe dry 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 3½ 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 and Maintenance during
Storage

While in storage, inspect units 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 all moving components 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 thoroughly clean
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 units are removed

from storage to be installed in their final location, they
should be protected and maintained in a similar fashion,
until the equipment goes into operation.

Prior to installing the unit and system components,
inspect the unit assembly to make sure it is in working
order.

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Table of Contents

Electrical Connections

General Safety Information . . . . . . . . . . . . . 1

Receiving, Handling, Storage . . . . . . . . . . . . 2

Mounting . . . . . . . . . . . . . . . . . . . . . . . 2

Electrical Connections . . . . . . . . . . . . . . . . 3

Start-Up . . . . . . . . . . . . . . . . . . . . . . . . 4

Drive Belt . . . . . . . . . . . . . . . . . . . . . . 4

Air Seals . . . . . . . . . . . . . . . . . . . . . . . 4

Dimensional Data & Specifications . . . . . . . . . 5

Installation Clearances . . . . . . . . . . . . . . . 5

Routine Maintenance

Energy Recovery Wheel . . . . . . . . . . . . . . . 6

Energy Recovery Wheel Maintenance . . . . . . . 6

Energy Recovery Wheel Access . . . . . . . . . . 6

Removal of Segments . . . . . . . . . . . . . . . . 6

Cleaning the Energy Recovery Wheel. . . . . . . . 6

Energy Recovery Wheel Belt . . . . . . . . . . . . 6

Energy Recovery Wheel Bearings. . . . . . . . . . 6

Parts List . . . . . . . . . . . . . . . . . . . . . . . 7

Troubleshooting. . . . . . . . . . . . . . . . . . . . 7

Maintenance Log . . . . . . . . . . . . . . Backcover

Our Commitment . . . . . . . . . . . . . . Backcover

The electrical supply must be compatible with that
shown on the wheel drive motor nameplate: voltage,
phase, and amperage capacity. Units are supplied with
a receptacle for the cassette plug and service box for
wiring. Connect the ERM wiring directly to blower wiring
or to blower fan relay to power the ERM whenever the
fan is in operation. All wiring must be properly fused and
conform to local and national electrical codes.

Do not operate the ERM for any extended period
without airflow across the energy wheel as the drive
motor is cooled by the airflow.

Mounting

NOTE

ERM must be installed such that an energy wheel
cassette slides in and out of the cabinet parallel to the
floor.

NOTE

To reduce unit weight for handling purposes, the
cassette may be removed from the cabinet.

NOTE

Adjusting the diameter seals on the front and back of
wheel prior to mounting is recommended as access
will be limited once in place. See Start-Up, Air Seals
for adjustment procedures.

The ERM is designed for indoor mounting only and
is shipped with a mounting kit containing hanging
brackets. These brackets will support the ERM in either
the vertical or horizontal position for design flexibility.

To hang the ERM:

1. If cassette removal is desired,
remove the access panel and
unplug the wheel drive motor at
the electrical receptacle in the
cabinet, then slide wheel out.

2. Replace the access panel
before mounting to ensure
squareness.

3. Use the brackets as shown in
Figure 1 to secure the ERM.
These brackets are designed for
3/8 in. threaded hanging rods.

4. To reinstall the cassette in the
mounted ERM cabinet, align
the cassette sliders with the
channels in the cabinet and
slide the cassette in place.
Replace access panel when
finished.

Figure 1

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