www.senjusprinkler.com
Document No.U029423 • 01-06-2022
Page 6 of 6
C A R E & M A I N T E N A N C E
O R D E R P R O C E D U R E
The following instructions must be implemented for the maintenance and service of the Model ZN-QR.
Notes
Wet pipe sprinkler systems must be maintained at a minimum temperature of 40°F / 4°C to prevent freezing and bursting of the
pipe and/or sprinklers.
Automatic sprinklers are not to be tested with a heat source. Operation of the heat responsive element can result.
Absence of an Escutcheon Plate may delay the time to sprinkler operation in a fire situation.
Before closing a fire protection system main control valve for maintenance work on the fire protection system, which it controls,
permission to shut down the affected fire protection system must be obtained from the proper authorities and all personnel who
may be affected by this action must be notified.
Do NOT enclose sprinklers within drapes, curtains, or valances.
Do NOT hang anything from the sprinklers.
Do NOT cleanse the sprinklers with soap and water, detergents, ammonia, cleaning fluids, or other chemicals. Remove dust,
lint, cobwebs, cocoons, insects, and larvae by gently brushing with a feather duster or gently vacuuming with a soft bristle (i.e.,
dusting) brush attachment.
Exercise suitable safety precautions in the use and storage of highly flammable materials. The rapid rate of fire development and
spread of which can be caused by such materials can reduce the ability of the sprinkler system to aid in the control of a fire in
which they are involved.
Sprinklers, which are found to be leaking or exhibiting visible signs of corrosion, must be replaced.
Automatic Sprinklers must be kept in a cool and dry place. Automatic sprinklers must never be painted, plated, coated, or
otherwise altered after leaving the factory. Modified or over heated sprinklers must be replaced.
Care must be exercised to avoid damage to the sprinklers-before, during, and after installation. Sprinklers damaged by dropping,
striking, wrench twist / slippage, or the like, must be replaced.
When remodeling, such as by adding false beams or light fixtures or changing the location of compartment walls, first verity that
the new construction will not violate the installation requirements stated under WARNINGS. Alter the new construction and/or the
sprinkler system to suit the requirements of this document.
The owner is responsible for the maintenance of the sprinkler system, including inspection and testing, its compliance with
this documents, as well as the standards of the National Fire Protection Association (e.g., NFPA 25), and the regulations of any
other authorities having jurisdiction. The owner should direct any questions regarding the above rules and regulations to the
installing contractors or the sprinkler manufacturer. It is recommended that automatic sprinkler systems be inspected, tested,
and maintained by a qualified Inspection Service in accordance with NFPA 25.
Sprinkler
• Model: ZN-QR
SIN: SS2521, Commercial Flush Pendent Sprinkler, K5.6
• Temperature: 162°F (72°C) or 205°F (96°C)
• Finishes: White Painted, Black Painted, Chrome Plated
Escutcheon
• Escutcheon for ZN-QR Flush Pendent Series, O.D. 3 inch (
φ
75mm), Order Separately from Sprinkler
• Finishes: White Painted, Black Painted, Chrome Plated
When placing an order, please contact a local distributor with the following information (Model Name, Temperature
and Finish).
Tools & Accessories
• Socket VC-H
For use with a 3/8
″
drive ratchet (not included)
• Cap Removal Tool for ZN
