Master cool 53010 User manual
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AUTOMOTIVE NITROGEN PRESSURE REGULATOR
LEAK TESTING KIT
• Pressure regulation of Nitrogen (N2)
• Pressure testing refrigeration systems
• Leak-down testing of refrigeration systems
• Purging of refrigeration systems
• Only for use on nitrogen pressure cylinders
No. Description
1. Cylinder Connection
2. High Side Gauge of Nitrogen Regulator (input)
3. Low Side Gauge of Nitrogen Regulator (output)
4. Output Control Valve
5. Charging Hose Connection on Regulator
6. Pressure Regulator T Handle
7. Leak Testing Gauge Assembly
8. Connection to Refrigeration System
9. Leak Testing Ball Valve Lever
10. Charging Hose Connection on Leak Testing Assembly
11. Charging Hose
12. Charging and Testing Manifold (not included in kit)
13. Low Side Valve on Manifold
14. Low Side Hose (blue)
15. Charging Hose (yellow)
16. High Side Standard R134a 1/4” FL-M x 13mm
Economy Coupler
TECHNICAL DATA:
Connection:
• Model # 53001: CGA580 (US)
Pressure Regulator:
1
23
4
5
6
7
89
10
11
12
13
14 15
16
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• 100 - 4500 PSI (7 - 300 Bar) High side
• 30 – 1000 PSI (2 – 70 Bar) Adjustment range
• Integrated Shutoff Valve
Safety Relief Valve: 725 PSI (50 Bar)
Gauge Diameter: 2 5/8 (68 mm) Not including guard
WARNINGS
WARNING
Wear Safety Goggles
Avoid Contact with Refrigerant
WARNING
Wear Safety Goggles
Avoid Contact with Refrigerant
WARNING
Wear Safety Goggles
Avoid Contact with Refrigerant
• Only use with nitrogen gas (N2).
• The regulator is not to be used with liquid nitrogen.
• Do not modify the regulator. Doing so could result in personal injury.
• Do not over-pressurize the regulator. This could cause leakage, part
damage or personal injury due to bursting of pressure-containing
parts.
• Keep the regulator clean and free of oil.
• Do not use a damaged regulator. Except for replacing the gauges, do
not attempt to repair the regulator.
• Failure to follow instructions can result in personal injury and/or
damage to the equipment.
• Do not install this regulator where service conditions can exceed the
specifications of any applicable local, state, or federal codes and
regulations.
• Wear safety glasses and gloves.
REGULATOR CONNECTION AND USE
Note: The nitrogen regulator can be used with a charging hose and leak
testing gauge assembly or a charging and testing manifold.
• Make sure the cylinder connection (1) is clean and free from damage.
• Turn the T handle (6) all of the way out (counter clockwise, looking
from the bottom).
• Open the output control valve (4) to release any pressure, and then
close it.
• Install the nylon gasket or O-ring, if the connection requires one.
• Install the regulator onto the cylinder. Do not over tighten the nut on
gasketed connections.
• Connect the yellow charging hose (11) from the regulator to the leak
testing gauge assembly, making sure the ball valve connection (9) is
closed.
(If using a manifold, connect the yellow charging hose (15) of the
manifold to the regulator.)
• Connect the other end of the leak testing gauge assembly (8) to the
system.
(If using a manifold, connect the low side hose (14) from the manifold
to the system.)
• Slowly open the cylinder valve. The high side gauge (2) should read the
cylinder pressure.
• Adjust the regulator pressure by turning the T handle (6) clockwise
until the required pressure (based on the system’s refrigerant) is
shown on the low side (output) (3) pressure gauge.
NOTE: This is a non-reliving regulator. To adjust the output pressure
lower, some nitrogen will have to be released from the output (e.g. with
no hoses connected, turn the T handle counter-clockwise, then open the
output control valve and close it. The output gauge should read a lower
pressure.)
• If using the leak testing gauge assembly, turn the red needle to the
required refrigerant pressure.
3www.mastercool.com
Testing Range of Systems
R134a 260 - 320 psi 18 - 22 bar
R404A 405 - 465 psi 28 - 32 bar
R404C 405 - 465 psi 28 - 32 bar
R507 405 - 465 psi 28 - 32 bar
R22 405 - 465 psi 28 - 32 bar
R410A 550 - 610 psi 38 - 42 bar
• Open the output control valve (4) and open the ball valve (9) on the
leak testing gauge assembly for the nitrogen to flow into the system.
(If using a manifold, open the output control valve (4) and the low side
valve (13) on the manifold.)
• Make sure the required pressure is available on both gauges. (You may
need to turn the T handle (6) on the regulator to adjust to the required
pressure.)
• Once the pressure is equalized (make sure the black needle is aligned
with the red marker on the leak testing gauge assembly) close the ball
valve connection (9).
(If using a manifold, close the low side valve (13) on the manifold
making note of the pressure when the valve is closed.)
• Close the output control valve (4) on the regulator
• Disassemble the yelllow charging hose (11) from the regulator and
leave the system for a period of time (time is based on the size of the
system.)
• After some time, look at the gauge, if there is a leak in the system the
pressure will have dropped from the original settting.
REGULATOR REMOVAL
• Turn the cylinder valve off.
• Relieve the pressure on the regulator by opening the output control
valve (4). Both gauges should read zero.
• Slowly loosen the cylinder connection. There may still be some
pressure between the regulator and cylinder.
• Completely remove the regulator.
• Clean and store the regulator in its box to prevent damage.
4 www.mastercool.com 53010-AUT-INST
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