Aussie Pumps RAPTOR EXTREME 21 Safe Operator Instruction Manual - Page 14

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Aussie Pumps
Resetting the Safety Valve ... ONLY TO BE CARRIED OUT BY QUALIFIED SERVICE TECHNICIAN
The safety valve prevents damage to the pump seals and
valves caused by a pressure spike.
The safety valve should only be reset after checks to
ensure the unloader valve is working correctly. If in doubt
contact, your nearest Aussie Eco-clean service centre.
The following steps should be taken to reset the safety
valve, with the unit running.
1.
Unscrew the lock nut (C) on the safety valve and the
adjusting the hex knob (D), it should be screwed in
all the way.
2.
Loosen the lock nut (B) on the unloader and wind
the unloader knob (A) in gradually until the required
pressure is obtained whilst the trigger is pulled and
water is running through the pump. Do not exceed
the maximum rated pressure of the pump.
3.
The lock nut (B) should then be wound up to meet
the adjusting nut. The small grub screw in the
locking ring should be screwed in to secure.
4.
Paint mark across the nut and knob to identify any
tampering with the setting.
WORK SMART ... STAY SAFE
14
AUSSIE SAFE BLASTING
SAFETY VALVE
| Aussie Raptor (Class B) ... Operator's Instruction Manual
D
C
UNLOADER
A
B
5.
With the pump running at the required pressure,
the adjusting screw (D) on the safety valve should
be wound out until there is a slight drip. Screw it in
one quarter of a turn, or until the drip stops, this will
set the safety valve 10% over the required pressure.
The lock nut (C) should then be locked off. Paint
mark to identify any tampering.
6.
Repeat running with the trigger open and then
closed two or three times to ensure safety valve
doesn't blow off pressure.
If safety valve continues to trip contact your nearest
7.
Aussie Eco-clean service centre
August 2019
.