Mirage M-‐160 Installation and Maintenance Instructions
10
6.0
Servicing and Winterization
To remove the M-‐160 from service, isolate the sprinkler from the mainline piping system
through the manual isolation valve. Manually operate the electric remote control valve to
ensure the sub-‐lateral line is no longer pressurized.
6.1 Winterization
Prior to frost and the on-‐set of winter, verify there is no standing water within the sprinkler
body and internal components. A small amount of water within the piston drive will not
cause failure when freezing occurs.
During spring start-‐up, if the piston drive area is frozen, it will take approximately 15-‐20
minutes to defrost when the air temperature reaches approximately 68
0
F (20
0
C).
7.0
Maintenance and Repairs
An unexpected water jet from an operating M-‐160 can cause serious injuries.
Therefore make sure that before any maintenance or repair work is started the
sprinkler has been isolated from the mainline supply and the sub-‐lateral line has
been de-‐pressurized.
The M-‐160 sprinkler is designed to be serviceable from the top without having to remove
the entire sprinkler body from the ground.
7.1 Maintenance
1.
Clean the interior of the M-‐160 sprinkler body with an industry vacuum or similar
equipment.
2.
Remove an over-‐grown turf around the perimeter of the top of the sprinkler when
located in natural turf applications.
3.
Verify the sprinkler is vertical and perpendicular with surrounding grades. Adjust
as needed if any settlement has occurred.
When changing the main nozzle, the threads on the nozzle retainer and sprinkler body
should be cleaned and applied with a thin amount of lubricant. This will ensure easy
replacement or removal if needed. The outer nozzle retainer should be hand-‐tightened
only. Verify the nozzle subassembly is vertical and perpendicular to the top of the sprinkler.
When installing a new nozzle make sure the drainage pipe on models
manufacturer prior to 2009 is in the proper nozzle hole and the O-‐rings
are seated properly, see Figure 11-‐1.
ATTENTION
!
