Janus Mv Series User Manual

Page: xi
MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM
OPERATION, DESIGN, & SERVICE MANUAL
REV C
Document # DOC324
Issued: April 26, 2018
Revised: March 22, 2022
UL FILE # EX27541
Revision Description of Change Date
--- Initial Printing 26-Apr-2018
A UL Markings added. All references to "Large Dry Chemical" changed to "Engi-
neered Dry Chemical". All references to "Fire Suppression System" changed to
"Fire Extinguishing System". Part Number 26680 added. Sentence "The electric
valve actuator has a life span of 25 years from date of manufacture" added to
Section 2.2.3.1.
22-Mar-2019
B Figure 3.7.4a added. Table 3.7.4.1a and 3.7.4.1b screening nozzle part num-
ber corrected. Appendix D added. New Figure 4.1.6.4b added, existing Figure
4.1.6.4b renumbered accordingly. Appendix C renamed "Auxiliary/Legacy Com-
ponents".HazardclassinfoaddedtoPreface.Hazardtypesclariedwithbullet
points Section 1 and additional paragraphs added. Section 1.1 revised for clarity.
Section 2.6.1 thru 2.6.7 made subsection of new Section 2.6.1. Notes added to
Section 2.6.1.1 and 2.6.1.2. Phrase "the unclosable opening of Total Flooding
application where an enclosure has greater than the allowable total unclosable
opening percentage" added to Section 2.6.1.6. Section 2.6.2 and 2.6.3 added.
HazardtypesclariedwithbulletpointsSection3.ClassDdenitionaddedto
Section 3.1.1. Section 3.1.2 rewritten for clarity. Section 3.2 General Purpose
and Industrial Hazards added, all subsections and following sections renum-
bered accordingly. Section 3.2.3 Total Flood - JSH Nozzles added. Section 3.2.5
added. Cautions in Section 2.2.1 and 2.2.2 combined for clarity. Footnotes added
to Section 3.3 and 3.4. Individual Pipe Limitation sections removed and sec-
tions renumbered accordingly. Section 2.5.2 and 2.5.2.1 revised for new model
components, all relevant gures updated accordingly, and obsoleted compo-
nents moved to Appendix C. Phrase "to 10 lb*ft" in Section 4.1.4.1 and 4.1.4.2
changed to "until it mates with the valve face". Revise Section 7.3 and subsec-
tions for clarity. Revise Section 7.4.3. Revise Table 3.3, 3.3.3.1, and Table 3.4.2
for greater information. Sentence beginning "All dry chemical nozzles referenced
in this manual" added to Section 1 and Section 2.6. Footnote added to Section
1.1, Section 2.6.1.1, and Section 2.6.1.2. Section 2.6.1.6 reworded for clarity.
Sentence beginning "They allow for an unbalanced" removed from Section 2.6.2.
JSH-360/180 added to Table 3.2. Note beginning "Although NFPA 33" in Section
3.4 bolded, and same text added to Section 3.1.1. Metric value in Section 3.2.3.1
"twoverticaloricelayersnomorethan12in(15cm)belowtheceiling"corrected
to 304.8 mm.
22-Apr-2020
C LOAH corrected to LAOH. Cylinders actuated only pneumatically referred to
as 'secondary'. Phrase "but utilize DOT 4BW500 cylinders that are accepted in
Canada"addedtonoteinSection2.1.1."Teontapeshallnotbeused"addedto
Section 4.1.4.1 and Section 4.1.4.2. Section 4.1.5, Item 2, 1/2 inch corrected to
3/4 inch. Figure 5.9 updated.
22-Mar-2022
Revision History

Janus Mv Series Specifications

General

Brand	Janus
Model	Mv Series
Category	Fire Extinguisher
Language	English