KAH Operation & Maintenance Guide
Page: 59 of 88
Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | [email protected] | www.krueger-hvac.com
SECTION 4 - SERVICE & REPAIR
SERVICE TOOLS AND EQUIPMENT
•
Complete set of Mechanics Hand Tools
•
Observation Mirror
•
Fin Comb (straightener)
•
Heat Gun
•
Straightedge
•
Tachometer
•
Manometers, capable of 0.01-36” combined
•
Digital Manometer (replaces Magnehelic Gauge).
Cat. #475-1 FM-AV, Series: 475-1 Mark III, with a
range: of 0 to 19.99” WC from Dwyer Instruments,
Inc.
•
Pitot Tube
•
Duct Hood
•
Velometer and Psychrometer
•
Combustion Efficiency Analyzer.
•
Standard refrigeration gauges/manifold
•
Refrigerant reclaimer
•
Refrigerant leak detector
•
Vacuum pump
•
Gas torches (soldering and/or brazing)
•
Fire extinguisher
•
Electronic Temperature Meter (min. 3 leads)
•
Megohm and Phase Meters
•
Capacitor Analyzer.
•
Clamp-on Ammeter.
•
Multi-Meter or Meters, capable of reading the
following:
»
One Thousand Volts AC/DC
»
Amperes
»
Ohms
»
Milli-volts
»
Milli-amps
»
Microfarad
NOTE -
Never use silicone caulk/sealant or caulk/
sealant containing silicone in or on any AHU. The
only exception is when the AHU is provided with
hight temperature gas heat venting.
WARNING -
Rotating parts and electrical shock
hazards exist. Lock out and tag out the fan
motor(s) and heat power disconnects before
servicing. FOLLOW THE LATEST “LOCKOUT
TAGOUT” PROCEDURE. Failure to follow proper
safety precautions may result in serious injury
or death. Refer to general safety guidelines and
safety symbols located at the front of this manual.
WARNING -
Always replace RED metal tab on
access doors that provide access to moving parts.
This mechanical protection from moving parts is
required by UL-1995.
Always replace RED metal tab on access doors
that provide access to pressurized areas. This
mechanical protection is to prevent accidental
release of access doors under positive pressure.
WARNING -
Do not weld or use torches on the
exterior or interior of the AHU housing. The housing
contains polyurethane insulation, which, when
under combustion, will produce harmful, toxic
gases resulting in personal injury or death.
WARNING -
DO NOT PENETRATE WIREWAYS in any
manner. These sheet metal channels, which run
along the top panel, contain electrical wires and
connections. Electrical shock and/or damage to
the AHU may result.
