Critical Room Control CRC-FHM User Manual

Critical Room Control CRC-FHM Specifications

General

Brand	Critical Room Control
Model	CRC-FHM
Category	Controller
Language	English

Summary

Primary Screens

Main Screen

Air Flow Alarm

Explains how the unit alarms when face velocity or volume is outside set parameters.

Emergency Override

Describes how to command hood exhaust to maximum flow from main screens.

Exhaust Input Setup

Sash Sensing - Exhaust Input Setup

Immediate Valve Control (IVC™) – Sash Sensing

Details IVC technology for rapid reaction to sash position changes.

Sidewall Sensing - Exhaust Input Setup

Predictive Sash Valve Control (PSVC™) – Sidewall Sensing

Explains PSVC algorithm for maintaining face velocity during sash opening.

Sash Setup

Vertical Sash – Sash Setup

Combination Sash – Sash Setup

Set Point / Control Setup

Min. Flow Feature

Max. Flow Feature

Alarm Setup

Sash Alarm - Sash Area

Triggers alarm if total sash area exceeds a set value for a duration.

CFM Alarm - Sash Area

Triggers alarm if current CFM exceeds a set value for a duration.

General Setup Screen

Decommission Mode

Allows decommissioning of the fume hood for repairs, disabling alarms.

Diagnostic Screen

Installation

Mounting / Installation

Controller I/O

Troubleshooting

Display is not reading correct air volume or face velocity.

Steps to resolve issues with incorrect air volume or face velocity readings.

Recalibrating Touch Screen