Accutrol Apex Premier, Инструкция по установке, эксплуатации и обслуживанию

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T-APM - Apex Premier F
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T-APM 0133MAN00015 - Rev J ECN - JUL 2017
Page 7 of 61
Introduction
APM Features
Password Protection
Touch Screen Setup with User-Friendly On-Screen Instructions
J
umbo L.E.D.’s to Indicate Hood Status at a Glance
Loud Audible Horn to Alert the Operator of Alarm Conditions
Three Display Modes of Operation
o
Alpha Mode
– displays hood performance using text only
o
Numeric Mode
– displays actual face velocity at all times
o
Graphic Mode
– displays trend line of face velocity over a time interval
Configurable High & Low Velocity Alarms with Selectable Time Delays
Configurable Warning Bands to Alert Operator of Potential Alarm Conditions
Full Unoccupied Mode, Enabling Alternate Alarm Configuration Settings.
Dual Digital Inputs for Communicating External Alarms or Occupancy Status
Selectable External Warning Messages to Inform Operator of External Problems Not Directly
Relating to the Fume Hood
Dual Relay Outputs for Purge Mode or Communicating Alarms
One, Two or Three Point Calibration Routines Built-in
Available Calibration A
djustments to “tweak” Velocity to Exact Values
Built-in Internal Reference Probe, with Optional External Reference Available. Note: External
Reference Must be Ordered at Time of Purchase
Operates from Industry Standard 24VAC or 120 VAC Using Optional Wall Plug Transformer
Removable Terminal Blocks to Simplify Wiring
Important Considerations
Prior to installing and calibrating your Accutrol APM , reference ANSI/ASHRAE STANDARD 110-
1995 for proper methods of testing performance of laboratory fume hoods.
Per ASHRAE guidelines, “
The performance of a laboratory fume hood in providing protection for the
worker at the face of a hood is strongly influenced by the aerodynamic design of the hood, the ventilation
of the laboratory room, and by other features of the laboratory in which it is installed.
”
The following items are identified by ASHRAE as being important factors contributing to the safe
operation of laboratory fume hoods:
1. Cross-drafts. Air currents may, by creating turbulent air pockets, draw contaminants from the hood.
Such cross-drafts could be caused by air supply diffusers or grilles, open windows or doors, or rapid
movements of people in front of the hood.
2. Work procedures. There is substantial evidence to suggest that all work in a hood should be
conducted as far back in the hood as practical. Typically, users have standardized the requirement that
all work should occur at least 6 inches behind the face of the hood. However, significantly improved
protection can be achieved by working farther than 6 inches from the face of the hood.
3. Internal obstructions. The location of too much laboratory equipment (bottles, glass, etc.) in the hood
will disturb airflow patterns into the hood.
4. The procedure being performed. The intrinsic hazard of the procedure being performed can affect
the level of safety required by the user.
5. Thermal challenge. Heat produced in the hood can cause significant disturbance in the hood
performance and even cause leakage of warm and possibly contaminated air from the top of the hood or
from behind the sash.
6. Rate of response. The transient state or interval required for a variable-air-volume hood to respond to
a rapid opening of the sash, or the time interval required for a hood to respond to a change in static
pressure in the main exhaust duct serving multiple hoods, may affect hood performance.