PA RL 37 SW8-SW35 Series User manual

Last Update: 07/07/10
1
RL 37 SW8-SW35 Rotatingoutlet-inlet Spraygun-310bar–
31MPa
Technical manual : E 139
Guns suitable for use up to 310 bar – 31 MPa rated pressure pumps.
No fluid passage upon trigger release.
DN10
TECHNICAL SPECIFICATIONS
P/N
RATED
PRESSURE
bar - MPa
PERMISSIBLE
PRESSURE
bar - MPa
MAX FLOW
RATE
I/min
(1) MAX
TEMPERATURE
°C
INLET
OUTLET WEIGHT
gr
30.1247.00
310 - 31 350 - 35 40 160 G3/8 G1/4 FF 650
(1) The gun has been designed for continuous use, at a water temperature of 90°C (195°F). It can resist a t the max
temperature of 160°C (320°F) for short periods only , as, when the gun shuts off, the heater continues to transmit the heat
to the water, thus increasing both temperature and pressure up to high, dangerous values.
Using the gun at a water temperature higher than 60°C involves for the operator the use of adequate sa fety devices,
such as gloves, glasses, etc.
Instruction manual, maintenance, installation, spare parts.
For a correct utilization, follow the directions of this manual
Re-print them on the Use and Maintenance booklet of the machine. n. 12.9139.00
•
30.1247.00 RL 37 SW8-35 G3/8 G1/4 FF
-
Rotating front coupling with oblique bearing and Sst balls that
can resist radial and axial loads
( axial force max 150N;torque reaction max 20Nm)
- Viton Seals, SW8 pin made of stainless steel.
- Covered by shockproof plastic semi-housings.
- Sst seat and ball.
- Internal structure in brass and Sst.
- Ergonomic construction.
- Minimum fatigue for trigger opening and use.

Last Update: 07/07/10
2
DIMENSIONAL DRAWING
INSTRUCTIONS
This product is to be utilized with clean fresh water, even slightly additivated with normal detergents. For use involving
different or corrosive liquids, contact the PA Technical department. Appropriate filtration should be installed when using
unclean liquids. Choose the gun in line with the data of nominal running (system rated pressure, max flow and max
temperature). In any case, the pressure of the machine should not exceed the permissible pressure rate imprinted on the
gun.
INSTALLATION
This gun was designed to operate with hot water (in compliance with the technical specs). Provide the plant generating
hot water with an equipment limiting the incidental increase of the fluid temperature.
Always fit a safety valve to protect the delivery conduct when the latter is under pressure.
Choose a suitable nozzle and ad just the valve mounted in the front of the gun, thus obtaining a constant supply and
avoiding unpleasant pressure spike when closing the system.
If the nozzle wears out, the pressure falls. When you install a new nozzle, adjust the system back to the original
pressure.
OPERATIONS
The gun opens and closes a high pressure conduct by means of a piston acting on a seat; the return is controlled by a
spring which releases the trigger. Attention: during pump activation always set the gun with its safety latch
connected in order to prevent accidental openings
WATER HOSE FEED
By high or very unsteady pressure values on delivery, it is necessary to mount a pressure reducer , both to level the flow
rate on delivery and to protect the system components.

Last Update: 07/07/10
3
PROBLEMS AND SOLUTIONS
PROBLEMS PROBABLE CAUSES SOLUTIONS
Leakage from the nozzle Presence of impurities
Gun seat worn out
Clean
Replace the seat
Fit adequate filters and/or check
Leaking seals Seals worn out Replace seal
Difficult trigger opening High pressure inside circuit Check the bypass al e and adjust it if necessary
REGULATIONS
The design and construction of our products comply with: norm CEI EN 60335-2-79 first edition, published in
1999-03 and its respective variations on the project norm prEN 1829.
Read this manual before starting the assembly.
For a correct utilization, follow the directions described in this manual and re-print them on the Use and maintenance
manual of the machine.
The present manual is valid for all the guns named RL 37 SW8-SW35.
SPARES
Use original PA spares only in order to get both a correct operation and a long lasting, reliable product.
MAINTENANCE
Maintenance has to be carried out by Specialized Technicians.
STANDARD: every 400 working hours (circa 10,000 cycles), check and lubricate the seals with water
resistant grease.
SPECIAL: every 800 working hours( circa 20,000 cycles), check the wear of the seals and internal parts and
if necessary, replace with original PA parts, taking care during installation to lubricate with water resistant
grease.
CAUTION: re-assemble the gun restoring the original conditions.
The manufacturer is not to be considered responsable for damage as a result from incorrect fitting
and maintenance.
Technical data, descriptions and illustrations are indicative and liable to modification without notice.

Last updated 02/02/2015
30.1247.00 RL37 sp.gun/sw8st.pin 3/8F-sw.35 1/4F Bsp 30.1249.00 RL37 weep.gun,.l/press.+sw8 -sw35
Pos. P/N Description Q.ty K1K2K3K4 Pos. P/N Description Q.ty K1K2K3K4
1 30.1207.24 Casing-kit -RL37 +screws, Sst. 1 1
2 16.3075.51 S/tapping screw, DIN7981 3,5x18 mm Sst. 7 10
3 10.4018.00 Back-up ring, 3,2x7,5x1,2 mm 1 • 10
4 10.3165.00 O-ring, 2,62x2,84 mm Vi 70 1 • 10
5 14.3511.00 Washer, 3,2x7x0,5 mm sst. 1 • 10
6 30.0704.51 Piston, 3-4 mm Sst. 1 • 10
7 30.1708.20 Seat, 6mm Sst.+O-ring 1,78mm NBR85 1 • 10
8 14.7448.00 Ball, 5/16" Sst. 1 • 10
8 30.1762.21 Shutter, complete (1) 1 5
9 30.2596.51 Spring, 1,5x6,1x23 mm Sst. 1 10
9 30.1764.51 Spring, 1,3x9,1x24 mm Sst. (1) 1 25
10 10.3020.02 O-ring, 1,5x10 mm Ni 85 1 • 10
10 10.3005.00 O-ring, 1x10 mm Ni 85 (1) 1 10
11 30.2595.31 Spring plug, M16x1 brass 1 10
11 30.2614.31 Plug, M16x1 M brass (1) 1 5
12 30.1205.35 Housing -RL37, brass 1 5
13 30.0675.84 Stop pin, 8x7,1mm PA 1 10
14 30.2517.31 Parallel pin, 5x27,5 mm brass 1 10
15 30.1204.84 Trigger -RL37, PA black 1 10
16 30.1510.84 Safety latch, PA red 1 10
17 30.1243.66 Tube, 1/4Bsp MM 105 mm z.pl. 1 5
18 30.1244.31 Adapt., M20x1M-1/4F Bsp brass 1 5
19 30.0728.84 Bushing, 9x13x6 mm plast. black 2 10
20 10.3109.93 O-ring, 2,4x8,3 mm Vi 70 1 10
21 10.4008.50 Back-up ring, 9x13,2x1,2 mm 1 10
22 30.0729.31 Spacer ring, 9x19x3 mm brass 1 10
23 30.1553.51 Pin -SW, M10x1,25 M sst. 1 3
24 30.0730.84 Bushing, 10x17x6 mm plast. black 1 10
25 30.0733.31 Nipple, M20x1 F brass 1 5
26 30.3061.31 Coupl., M10x1,25F-3/8F Bsp brass 1 5
27 30.1246.31 Coupling, 1/4 M Bsp × M20 - SW35 1 5
28 10.4008.50 Back-up ring, 9x13,2x1,2 mm 1 10
29 10.3056.01 O-ring, 1,78x8,74 mm Ni 85 1 10
30 26.1205.31 Shim ring, 9x18,4x5,6 mm brass 1 10
31 14.7403.00 Ball, 3 mm Sst. 13 10
32 26.1204.51 Pin, 9mm-M12x1 M Sst. 1 5
33 10.3005.00 O-ring, 1x10 mm Ni 85 1 10
34 26.1202.51 Ring nut, M20x1 Sst. 1 5
35 30.1241.31 Adapt., M12x1F-1/4F Bsp brass 1 5
Kit P/N Description
K1 30.1209.24 Repair kit -RL37, 8x1pcs. 1
(1) 30.1249.00