Man Hours 1
Special Instructions:
1. Review manufacturer's specifications.
Items to Check & Initial Completion:
1. ___ Check to see that the operating control thermostat activates
the damper per design specifications. If not, recalibrate. Replace if it
is defective with the same type action (direct or reverse action)and
temperature range.
2. ___ Check damper linkage for tightness or damage. Lightly oil moving parts.
3. ___ Inspect dampers for free movement in mixing box. Replace felt or other
type seals as required.
4. ___ Inspect mixing box and hot and cold connecting ducts for air leaks.
Correct leaks with duct tape or tighten connections, as required.
5. ___ Inspect damper actuators for tightness to mounting brackets.
6. ___ Tighten electrical connections to servo-motors, and test if applicable.
7. ___ If pneumatic actuator does not stroke properly, correct sticking valve
stem or binding linkage. Replace diaphragm or actuator if necessary.
8. ___ Inspect for air leaks around actuator and in air line between controller
and actuator.
9. ___ Inspect thermostat for proper location and check main and branch air lines
at thermostat for crimps, breaks, etc. Repair if needed.
Tools & Materials:
1. Standard Tool Kit
Plus Insulated pliers and screwdrivers
Wire strippers
Wire crimpers
Voltmeter - Ohmmeter - Milliammeter
Clamp on meter(volt - ohm - amp meter)
Soldering kit
1/8" 25' fish tape
Burnishing tool
2. Control drawings
3. Calibration tools
4. Lubricants. Consult the Material Safety Data Sheets (MSDS) for hazardous
ingredients and proper personal protective equipment (PPE).
5. Duct tape
6. Cleaning materials and equipment. Consult the MSDS for hazardous ingredients
and proper PPE.
7. Safety goggles
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