Nelson BIG GUN, SRNV100 Operating Instructions Manual

OA-SRNV100-2 8/01

®

SRNV100 BIG GUN

SRNV100 BIG GUN® OPERATION AND ADJUSTMENT INSTRUCTIONS

SET UP FOR OPERATION:

1. Install 100T taper bore nozzle or
100R ring nozzle. The SRNV100 is
not designed to operate with the
100TR taper ring nozzle. If using the
ring nozzle set, install desired ring size
in the ring nozzle cap. The ring nozzle
cap can be sufficiently tightened by
hand. NOTE: If the 100R is used, it is

supplied with the ring cap, part number

7872. If any other cap is used, the
nozzle valve will not completely close.

2. To install the SRNV100, orient the
lower unit so the solenoid or hose
bracket will be located on the right
when viewed from the rear of the Big
Gun looking downstream.

3. Adjust location of stops to give desired
arc of coverage. Stops must be mounted
so that the arrows point toward each
other and the trip lever is located between
the arrows. If the stops are reversed on
the wrong end of the arc then the Big
Gun will fail to reverse.

4. The SRNV100 is factory set for normal
rotation speed. If a faster or slower
rotation speed is desired, move the arm
weight backward for faster operation
or forward for slower operation. The
SR100 low pressure drive vane kit,
part number 9857, is available to
enhance the drive when operating in
a nozzle range of .5-.65 100T and
pressure below 60 psi. NOTE: If the

SRNV100 is mounted on a tilted riser
of 10 degrees (or 17% slope) or more,
a 100CBK counter balance kit is
recommended to prevent back­sliding and improve proper rotation
throughout the entire arc setting.

Drive Vane

Drive Arm

Arm Weight

Trip Lever

Solenoid

Shift Lever

Nozzle

Nozzle Lever

Toggle Linkage

Actuator

Actuator Feed Hose

Valve Seat

5. If installing the SRNV100E (with solenoid), connect the solenoid wires to the
proper voltage source. Energizing the solenoid with the proper voltage results
in the valve opening. If installing the SRNV100H hydraulically controlled
(without solenoid), connect the actuator feed hose to the appropriate control
pressure circuit. Application of hydraulic pressure (equal to or greater than
SRNV100 base water pressure) to the actuator causes the nozzle valve to
close. If actuator control pressure (line pressure) is approximately 20 psi or
below, low pressure SRNV closure kit, part number 9924, is recommended to
provide reliable operation.

6. Be sure the entire control system is operating properly and that the hydraulic
fittings are securely installed. Failure to do so could prevent the nozzle valve
from closing, possibly causing personal injury or property damage. Observe
an entire opening-closing-opening cycle for proper operation.

WARNING!

1. Read operating instructions before operating sprinkler or making any

adjustments.

2. Never make adjustments or perform service while sprinkler is in operation.

3. Stand clear of high velocity water stream.

4. Never direct water stream onto roadway or electrical transmission lines.

5. Stay clear of nozzle valve linkage during operation. High clamping forces exist.

6. Stand clear of sprinkler during operation. Abrupt water spray exists during

opening and closing of valve.

7. To avoid injury or damage, check for proper operation of control system

before using nozzle valve.

WARRANTY AND DISCLAIMER
Nelson Big Gun
specifications for which the product was designed and under normal use and service. The manufacturer assumes no responsibility for installation, is limited solely to
replacement or repair of defective parts, and the manufacturer will not be liable for any crop or other consequential damages resulting from any defects or breach of
warranty. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR PARTICULAR PURPOSES AND OF ALL OTHER OBLIGATIONS OR LIABILITIES OF MANUFACTURER. No agent, employee or representative of the manufacturer
has authority to waive, alter or add to the provisions of the warranty, nor to make any representations or warranty not contained herein. This product may be covered
by one or more of the following U.S. Patent Numbers 3,744,720 and 3,559,887 and other U.S. Patents pending or corresponding issued or pending foreign patents.

Nelson Irrigation Corporation 848 Airport Road Walla Walla, WA 99362-2271 USA Tel: [phone] Fax: [phone] E-mail: [e-mail] Web site: www.nelsonirrigation.com

®

Sprinklers are warranted for one year from date of original sale to be free of defective materials and workmanship when used within the working

SRNV100 BIG GUN® ADJUSTMENT

8/01

item part number description qty.

1 8506 Nut, 7/16-14 UNC 1
2 8469 Valve Seat Assembly 1
3 8510 Nozzle Lever Assembly 1
4 6124 Cotter Pin, 3/32 x 3/4 8
5 7263 Pivot Pin 1
6 6110 Flat Washer AR
7 6110-001 Flat Washer (Thick) AR
8 7264 Lower Toggle Pin 1
9 7265 Upper Toggle Pin 1
10 7719 Linkage Assembly 1
11 7297 Actuator Pin 1
12 7296 Jam Nut 1
13 7797 Washer 1
14 7276 Actuator Assembly 1

PROBLEM: Nozzle stopper (valve seat) continues to leak when closed.
SOLUTION: 1. Adjust valve seat to assure even contact on nozzle seal surface.

a. Disconnect actuator pin .
b. Loosen the valve seat locking nut .
c. Rotate lever assembly to closed position and hold valve seat

lightly against nozzle seal surface. Adjust valve seat by rotating the
stopper in or out as required to achieve full contact with the nozzle seal surface.

d. Tighten the locking nut .

2. Adjust linkage to assure adequate closure force.
a. Adjust linkage assembly at A so that 12-15 pounds force is required to

push link B against closure stop (disconnect and reconnect lower toggle
pin during adjustment as required to check closure).

b. Reconnect actuator pin .

PROBLEM: Nozzle stopper wont clear stream when open.
SOLUTION: Adjust actuator position to assure complete opening.

a. Loosen jam nut .
b.Hold nozzle lever in the fully open rest position.
c. Rotate actuator assembly toward main elbow until rest buttons contact

and all play is removed from the linkage. Rotate further as needed until
drain hole and hose fitting port are oriented to the bottom.

d. Tighten jam nut .

Nelson Irrigation Corporation 848 Airport Road Walla Walla, WA 99362-2271 USA Tel: [phone] Fax: [phone] E-mail: [e-mail] Web site: www.nelsonirrigation.com