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Rev: 10/10/22

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Max-Air Technology, Inc.  •  114 Resource Drive •  Wentzville, MO 63385  •   United States of America

Tel +1.636.272.4934 • Toll Free 888.842.9998 •  Fax 636.272.4937  •  www.maxairtech.com  •  [email protected]

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ME G 035~044 Series LV/HV | Mod

Installation, Operation and Maintenance Instructions

Throughout the installation phases and operation of this equipment,  

safety procedures take precedence over all other activities. As a minimum:

1. Read and follow all instructions in this IOM.

2. Risk of electric shock! All wiring must be in accordance with applicable local 

codes, regulations and the NEC. Be aware that there may be hazardous voltages 

present which can shock, burn, or possibly cause permanent injury or even death. 

3. Before handling electrical connections, disconnect power feeds. There may 

be multiple power feeds connected to this unit. Check all terminal connections 

carefully when servicing the actuator.

4. This is a mechanical gear train system with high torque outputs. Connected 

mechanical linkages can and will cause personal injury if the user encounters a 

pinch-point during movement.

Safety First!

Handling & Storage:

1. This device is an electrically powered mechanical transmission 

system. It is comprised of a DC motor, an asynchronous AC motor, 

or a polyphase AC motor,  logic control PC boards, various discrete 

electronic components and electrical storage devices, all of which 

are susceptible to damage from high humidity environments. For this 

reason, this device must be protected from direct contact with water 

and/or high humidity storage environments.

2. Protect the device from physical damage while awaiting the 

completion of installation processes.

3. If this product is installed in water valve systems and remains 

unpowered during construction phases, condensate will accumulate 

and possibly damage the product. This product MUST be powered up 

at all times once it is installed in active piping systems. 

Installation:  

1. Confirm correct voltage and control before wiring and powering up 

this actuator. 

2. This device has been permanently lubricated at time of assembly. 

Maintain proper lubrication level by ensuring the actuator is mounted 

with the top cover at or above horizontal. This device is NOT designed 

to mount with the top cover below horizontal.

3. Use approved conduit entry components to protect the interior of 

the unit from ingress of foreign materials (including water). Utilize drip 

loops to prevent conduit condensate from accumulating and entering 

the actuator throught the EMT port(s).

4. Refer to the dimensional diagram (rear pages) for proper clearance 

on all sides as well as the top cover clearance requirements. Determine 

proper access space for the manual override system.

5. When mounting this device to a valve or damper, ensure the mating 

between the valve stem (or coupling) is NOT deeper than the socket 

depth in the bottom of the actuator. Use the proper length and thread 

bolts for mounting. (See dimensional diagram).

 

6. Ensure the actuator is concentrically mounted to the valve stem. 

Non-concentricity causes premature actuator or valve-stem seal 

failure, or actuator stalling due to high-torque during travel. 

7. Use properly sized power supplies and wire gauge over distance to 

prevent actuator failure from stalling and overheating.

8. Refer to the wiring diagram sheet (folded, inserted under the 

actuator cover) for wiring connections. You can also scan the QR code 

above and navigate to the Max-Air website to obtain a full-size wiring 

diagram. 

9. Do NOT parallel wire multiple on-off actuators to the same field 

control terminals. This WILL cause unexpected movement of the 

actuator(s), overheating and premature failure.

10. After installation and testing, do NOT operate the actuator with any 

covers removed.

11. It is recommended to operate the actuator for at least ten minutes 

once per month, as a minimum.

12. The internal heater is to be used in ALL applications. 

13. Mechanical travel stops are factory calibrated for 90 degree operation. 

These stops are NOT designed to adjust mechanical rotation by more 

than +/- 3 degrees. 

14. Mechanical stops CANNOT be used to limit travel electrically. Stalling 

this unit will damage the drive motor and control PCB's. 

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