CACHMHD Hard Mount Installation

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INSTALLATION GUIDE
CIRCUL-AIR HARD MOUNT EXTRACTORS

For Models:
CACHMHD-35
CACHMHD-40
CACHMHD-55
CACHMHD-70

Open attached document for instructions with Images.
Revised 10 June 2025

Copyright © Circul-Air Corporation 2025
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Tools Needed

Possible Additional Tools

Drilling Guide

  • Hammer Drill (for best results, use a corded drill)
  • Masonry Bit as per Drilling Guide
  • Wrench or Long Socket as per Drilling Guide
  • 8mm Nut Driver
  • #1 Philips Screwdriver
  • T20 or T25 Screwdriver
  • Caulking Gun (if using chemical anchor)

Model Hole Depth Bolt Exposed
Above Concrete

Bolt Size – Head
Size

CACHMHD-35 4”+ 2.5 inches 5/8 inch – 15/16”

CACHMHD-40 4”+ 2.5 inches 5/8 inch – 15/16”

CACHMHD-55 5”+ 2.5 inches 5/8 inch – 15/16”

CACHMHD-70 5”+ 2.5 inches 3/4 inch – 1-1/8”

Copyright © Circul-Air Corporation 2025
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  1. Ensure the area the extractor
    will be installed in is free of
    debris and any previous
    extractor/equipment (including
    any mounting hardware or

mortar).

  1. Remove lower front and back
    panel using Torq screwdriver to
    access bolts to remove from
    pallet and to be able to access
    for marking drill holes.

Steps for Installation

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  1. Use base or extractor to mark
    locations to be drilled and the
    perimeter of the extractor. Make
    sure when positioning unit to
    follow manual for recommended
    distance left between the rear of
    the unit and external structures
    or objects to allow for
    installation/servicing.
  2. Move base/extractor and use a
    masonry bit (for size see Drilling
    Guide above) and heavy-duty
    drill to drill out holes to listed
    depths. For best results, use a
    vacuum or compressed air to
    remove as much debris from the

hole as possible.

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  1. Place and secure anchors into
    holes. Note: possible delay at this
    point if using chemical anchor to
    allow anchor to set.
  2. Mix and add small amount of
    grout onto footprint of base or
    machine, ensuring it does not
    make contact with anchor

hardware.

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  1. Place base over anchor
    hardware and affix as per Drilling
    Guide. Place machine if not

using base.

  1. Remove excess grout and
    clean base. (Best to do before
    the machine is mounted so that
    the grout doesn’t dry on the

base.)

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  1. Place machine on base and
    affix with base hardware
    provided (2 bolts in the front, 4
    bolts in the back).
  2. Reinstall front and back lower

cover.

Copyright © Circul-Air Corporation 2025
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  1. Connect drain to trough or

drain.

  1. Connect unit to power,
    following all regulatory codes in

your area.

Copyright © Circul-Air Corporation 2025
Page | 9

  1. Build water screens and
    attach to machine, then connect

water supply.

  1. If using pump, install as per
    pump install guide.

Copyright © Circul-Air Corporation 2025
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  1. Turn power on and ensure

unit turns on.

Do not run or test machine until a
minimum of 4 hours has passed
since completing step 8.

Updated on 2025-07-23

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