What to do when your Standard 87 inch cloth door panel is too small for a large doorway.

A great feature of FanTestic is its ability to show users a summary table of their results. However, many testers don’t know that you can also use FanTestic to combine 2 tests in the same direction into a single table.

Gusting winds – definitely not ideal testing conditions if you want repeatable, accurate results. If you find your before and after air leakage tests don’t make sense, strong baseline pressures are a likely cause.

How to tell if you are using the wrong flow ring or range. Also, an overview of how to properly use flow rings and the range setting.

How to connect your gauge properly with the right tubing connections.

Video demonstration - what to do when your flow is to low.

All motors are tested at Retrotec facilities for 1.5 hours under full current and stress. The motors which shut off due to excess heat are rejected, and sent back to the beginning of the production line. Some users, however, may still encounter problems in the field. Below are some points that may be followed to remedy a specific problem.

The 3300 series fan's power supply will stop working if either of the following conditions occurs: 1. The internal 25 Amp circuit breaker is triggered 2. The internal relay comes loose If either situation occurs,

Retrotec 3300 series variable-frequency fans require 100-280 VAC 50/60 Hz power in order to operate reliably. Voltage drops due to line losses and fluctuations in AC power can be significant. The fans will not work at line voltages of less than 95 VAC. If the system will:

Whether you are using a soft or hard panel frame for your blower door, it’s easy to set up. If you don’t have one already, each frame has its own benefits – Find out which is right for you and how to set it up.