Rego Macro CryoMac 3 User manual

CryoMac®3 Operation and Maintenance Manual
Macro Technologies
A RegO®Brand
SAFETY INSTRUCTIONS
For your safety and improved service life of the product, please read this
Manual before use and follow the safety instructions carefully.

Warning Installation, usage and maintenance of this product must be in compliance
with all Macro Technologies, LLC Instructions as well as all requirements and
provisions of national and local standards, codes, regulations and laws. Inspection
and maintenance of a periodic basis is essential. Only qualified personnel should
perform installation and maintenance. Be sure all instructions are read and
understood prior to installation, operation and maintenance. These instructions
must be passed on to the end user of the valve.
Avoiding the inhalation of, or skin contact with Liquefied Natural Gas (LNG) is
advised. LNG can cause asphyxiation, freeze burns, fire and explosions which
can result in serious injury or death. See the LNG MSDS for specific information
regarding safe handling of LNG. Evacuation of LNG must take place in a well-
ventilated area to insure dispersion. Keep LNG far from open flames or other
sources of ignition to prevent fire or explosion.
Failure to follow the safety warnings may result in
serious injury
1) Whenever operating the LNG quick connect fueling Nozzle, be sure to wear the proper
safety clothing consisting of:
Full face shield
Thermal gloves approved for cryogenic use
Cryogenic smock
Solid shoes capable of withstanding cryogenic spill
2) Read the User’s Manual in its entirety before operating this product.
3) Make sure the operating space is clear to avoid accidental contact with others.
4) Do not use the product in any way not described in this manual.
5) Only use replacement parts provided by Macro Technologies.
6) Do not operate the product if there is any visible damage.
7) Stop operation immediately if leakage occurs.
8) Follow the maintenance schedule as described on page 4-5 of this manual.
Only use Macro Technologies replacement parts when performing maintenance.
i

Table of Contents
Key Features.................................................................................................. 2
Specifications ............................................................................................... 2
Product Description ...................................................................................... 3
Features and Benefits of the Stop Assembly
New Features Designed to Address Icing Issues
Operating Instructions ................................................................................... 4-5
Product Maintenance and Part Replacement................................................. 5-9
Maintenance Schedule ....................................................................... 5
Inspection Schedule Checklist ........................................................... 6
Replacement of Poppet Assembly and Seat/Seal Assembly ............... 7
Replacement of Interface Seal ............................................................ 8
Replacement of Sleeve Assembly ...................................................... 8
Warranty........................................................................................................ 10
Trouble Shooting Guide ................................................................................. Insert
Difficulty Depressing Stop Assembly
Difficulty Connecting/Disconnecting
Leak While Connected/Disconnected
Leak at Hose and Nozzle Connection
Excessive Venting
Bypassing the Vent Position
Difficulty Operating Handles
CryoMac®3 LNG Fueling Nozzle One Page Fueling Guide.............................. Insert
1

Specifications
Fluid Compatibility: LNG, Methane and LN2
Maximum Refueling Pressure: 500 PSIG / 34.5 BAR
Maximum System Pressure: 500 PSIG / 34.5 BAR
Burst Pressure: > 1,500 PSIG (103.5 BAR)
Rated Flow: 50 GPM @ 250 PSIG (LNG)
Nozzle Weight: 10.4 LBS
Port Size: 1” Male SAE 37° Flare (SAE J514)
(1-5/16 -12 Thread)
Operating Temperature: -320°F to +140°F
(-195°C to 60°C)
Meets ISO 12617 requirements.
For Use with Macro Technologies receptacle part numbers 13530,
13615, 13620, 13705, 13990 and 14050.
Additionally, the nozzle has been verified to function well with other
manufacturer’s receptacles such as JC Carter receptacle part
number 62050 and Parker (Hannifin) Kodiak series receptacles.
We cannot guarantee that these or any other manufacturers will
continue to make compatible products.
Macro Technologies fully supports the development of National
and International Standards. We are active in participating in the
development of these standards.
Key Features
Thank you for purchasing the Macro Technologies CryoMac®3 LNG
(Liquid Natural Gas) Fueling Nozzle (Part No. CryoMac3-50M and
CryoMac3-50M-S). We know that you will find it safe, easy to use
and easy to service. Our Patent Pending design solves many of the
issues that have plagued competitive LNG Fueling Nozzles.
Macro Technologies offers the highest quality product with new–
age technologies to improve safety and ease of use including:
A positive “Vent Position” to release gases trapped
between the nozzle and receptacle through the Vent
Holes, which improves safety hen removing the Nozzle.
Ball bearings to lock the Nozzle in place during fueling.
Balls bearings help to guide the nozzle and let it “roll”
on and off easily. Light weight design makes the Nozzle
easier to handle over long work days and easier to slide
onto the receptacle.
Non-metallic bearings, air gaps, and insulation at key
points are used to minimize ice issues. Easy access or
maintenance of the receptacle end seal, poppet assembly
and the poppet seat. No expensive “clamp dogs” to
replace.
Reasonable cost while maintaining reliability.
Automatic Shutoff when disconnecting.
2

Product Description
The CryoMac3-50M and CryoMac3-50M-S have three handle
positions, Connected, Vent, and Open. In the Connected position
(Position 1 in Figure 1 below), the handles are pushed away from
the operator and the nozzle is locked onto the male receptacle and
fueling can commence. When the handles are pulled back to the
positive stop, Vent Position 2 in Figure 1 below) the nozzle poppet
closes and also allows the mating receptacle poppet to close. In
this position the gases trapped between the closed poppet’s are
released through the vent holes – relieving any pressure on the
nozzle. For safety reasons, the nozzle should not be removed
from the coupling while in the Vent Position. Once all venting
has stopped, the Nozzle can safely be moved to the Connect/
Disconnect Position (Position 4 in Figure 1 below). To get from the
Vent to the Connect/Disconnect Position and remove the nozzle
from the coupling, you must push the Stop Assembly lever down.
Stop Assembly lever must be depressed before the handles are
moved to Position 4 for disconnection. When Stop Assembly is
depressed, handles will move forward slightly. After Stop Assembly
lever has been depressed, handles can be moved to the Connect/
Disconnect Position until they stop (the retaining balls should now
be visible).
1. Connected and
ready to fill. Stop
Assembly inactive.
2. Vent Position. Stop
Assembly active (nozzle
cannot be removed).
3. Stop Assembly, activated when
handles are moved back from
Fill Position (1) toward Vent
Position (2)Stop Assembly lever
must be depressed before the
handles are moved to position
4 for disconnection. When Stop
Assembly is depressed, handles
will move forward slightly.
4. Connect/
Disconnect. In
this position
nozzle can be
connected or
disconnected.
Features and benefits of the Stop Assembly:
The CryoMac®3Stop Assembly has been re-designed to clear ice
from the Stop Assembly area.
When Disengaging the nozzle, be careful not to pull or force
the handles back as this will increase the load applied to
the stop pawl making it difficult to depress the stop lever.
The Stop Assembly is inactive when the nozzle is in the fueling posi-
tion. The Stop Pawl is always in the ready position and is activated
when the pawl catches the probe shoulder as the nozzle moves to
the vent position (see Diagram of New Stop Assembly).
New Feature Designed to Address Icing Issues:
• Edges of slots with guide pins designed with ramps to
remove ice buildup (see below).
• Internal stop ring has been re-machined to breakup frost
that forms from within the nozzle barrel.
• Reset pawl designed to clear ice from stop assembly area
(See Diagram of New Stop Assembly).
DIAGRAM OF NEW STOP ASSEMBLY
Stop Assembly Lever Reset Pawl
Stop Assembly Pawl
NOTICE
When disengaging the Nozzle, if the
handles bypass the vent position, the stop
Assembly and/or probe shoulder may be
worn. Immediately stop use and remove
the nozzle from service. Contact your
service department or the manufacturer.
3

Operating Instructions
Before fueling, be sure to connect the
ground cable. This prevents static electricity
buildup and possible accidents. Do not
attach ground cable to anodized cap or
fueling nozzle. Ground cable must be
connected to a conductive spot on the
vehicle.
Coupling Nozzle for Fueling:
1. Using dry compressed air or nitrogen, blow out all water and
frost buildup, paying special attention to:
A. Interior and exterior of
retaining ball area.
B. Slots just behind the
stainless sleeve
(see figure below)
C. Male receptacle (clear off any moisture or debris that could be
present)
2. Push Safety Stop lever down to ensure handles are
completelyback, then slide the nozzle fully onto the male
receptacle.
(see Figure 2-1)
Failure to fully remove moisture from both
the nozzle and receptacle can cause ice to
form INSIDE THE FUEL SYSTEM once the
Nozzle is Connected and LNG is present.
This ice can cause dangerous leakage
as it can block the poppet assemblies or
damage the seals.
Handle position
Figure 2-1
For more information, see Trouble Shooting Guide.
Slots Exposed:
Depress release lever, then pull handles back for connect/
disconnect position.
Slots Fully Covered: Ready to be placed on receptacle
NOTICE
Frost build up in the slot area (red circled areas below)
may prevent nozzle attachment and removal. If nozzle
does not go onto receptacle, release the handles, depress
the Stop Assembly Lever, and then pull back the handles.
For the nozzle to slide onto the receptacle, the slots must
be fully covered like in the picture below.
3. Push the handles toward the receptacle as far as they will
go, the fueling process can begin once the handles are fully
forward.
Handle position
4

Handle position
Handle position
Handle position
6. Pull Handles all the way back and toward you to release the
nozzle from the receptacle. Remove the nozzle and hang or
store in a safe place. Protect the front end of the nozzle and
keep it clean.
Note: If you experience difficulty depressing Stop Assembly see
Trouble Shooting Guide.
NOTICE
Important to note that the nozzle operator must maintain
control of the handles during connecting and disconnecting
of the nozzle and the receptacle. Failure to do so will result
in shortened service life of the nozzle.
Uncoupling Nozzle after Fueling:
4. Once the gases vent out of the nozzle from the exposed vent
holes until the venting stops (usually just a few seconds).
If gases continue to vent for a prolonged period of time, check
to make sure handles are fully back and both the nozzle and
receptacle seal poppet’s are closed and LNG is no longer
flowing.
5. Once gas has stopped venting out of the holes, press the stop
Assembly Lever.
CAUTION: DO NOT pull the handles back while pressing
the Stop Assembly Lever.
Note: If you experience difficulty depressing Stop Assembly see
Trouble Shooting Guide.
Product Maintenance and Part Replacement
Maintenance Schedule
All Macro technologies products are thoroughly tested to prevent
injury and malfunctions during use. The following schedule is
provided as a recommended maintenance guideline to ensure
operator safety and continued smooth and proper nozzle operation.
Each Fueling:
Before and after each fueling thoroughly clean the nozzle and
receptacle opening of any debris or contamination with clean
filtered dry compressed air or dry nitrogen.
Every 8,000 Fills or recommended that station operator
establish a service interval for their specific operating
conditions:
Replace the Receptacle Interface Seal (p/n 14591). The part
normally should last through thousands of cycles depending on
Various environmental factors which can impact seal life. Always
use clean fuel and take care to blow off with dry nitrogen or dry
compressed air both the mating parts inside of the receptacle and
inside around the nose of the nozzle.
Evey 3rd Receptacle Interface Seal Replacement or As-Needed
(if leakage occurs while disconnected):
Replace the Seat Assembly and Poppet Assembly (p/n’s 14255
and 13960). These parts normally should last through thousands
of cycles unless excessive amounts of dirt, grit or contaminants are
present. Always use clean fuel and take care to blow off with dry
nitrogen or dry compressed air both the mating parts inside of the
receptacle and inside around the nose of the nozzle.
As-Needed (if bypassing the vent position):
Contact your service department or the manufacturer about
repair options. The Stop Assembly and probe shoulder are
mechanical devices that will eventually become inoperative due to
wear, corrosion and aging of components. The environment and
conditions of use will determine the safe service life of these parts.
Periodic inspection and maintenance are essential to avoid serious
injury and property damage.
NOTICE
• Dirt, grit or contaminants will cause premature wear
and leakage.
• The vent holes in some manufacturer’s receptacles
may be sharp and/or contain burrs, if so they may
cause premature seal failures.
• NO lubrication should be used on the nozzle. If
lubrication is used, it could impair the operability of
the nozzle.
• If the Stop Assembly does not function properly,
contact Macro Technologies and arrange to have the
CryoMac3 returned and repaired.
5

Inspection Each Fueling Daily
Before, during and after fueling check for any leaks ü
Visually inspect items listed below: ü
Cleanliness of Stop Assembly area
(See Features and Benefits of the Stop Assembly) ü
Check Sleeve for wear
(See Replacement of Sleeve Assembly)
ü
Check if Spring rest is Present
If Spring Rest is missing see Trouble Shooting Guide Issue #1.
ü
Dry Cycle onto Receptacle and Check items listed below: ü
Check Stop Assembly function
(See Features and Benefits of the Stop Assembly and Trouble Shooting
Guide Issue #9 - Bypassing the vent Position)
ü
Check hinge pins for free movement
(See trouble Shooting Guide Issue #10 - Difficulty Operating Handles) ü
OK Replace
CryoMac®3 Inspection Schedule Checklist
6

Replacement of Poppet Assembly and Seat/
Seal Assembly
If the Nozzle is leaking only while connected to the receptacle you
may replace the Seat/Seal Assembly (p/n 14255) without replacing
the Poppet assembly (p/n 13960). The current poppet assembly
can be used with the new Seat/Seal Assembly if the nozzle does
not leak when disconnected. If the nozzle experiences any leakage
while disconnected, both the Poppet and Seat/Seal Assemblies
need to be replaced.
Parts Needed
(Parts sold separately)
Poppet Assembly
p/n 13960
Receptacle Interface Seal
p/n 14591
Seat Assembly
p/n 14255
(Contains Receptacle Interface Seal) Socket Tool
p/n T-2961
NOTICE
If purchased separately, the receptacle interface seal must
be assembled with the brass retainer according to Macro
Technologies instructions using the proper seal repair tool
kit: p/n 14590.
Tools Needed: In addition to the above parts, you will also need
an open ended 1-18” wrench a Torque Wrench (recommended) or
Socket Wrench with a 1” socket attachment and a vise.
Open end side of seal
facing retainer flange
Closed end side of seal
facing retainer threads
NOTICE
Make sure that the removal tool is all the way pushed into
the mating Seat/Seal Assembly hex or you could possibly
strip the retainer. Use care when removing the retainer.
If not removed carefully, the poppet may pop out of the
Nozzle, potentially causing personal injury and damage
the parts.
1. Remove all items from their shipment packaging taking care in
handling them so that they are not damaged. Carefully inspect
parts to ensure that all sealing surfaces are clean, free of dirt
and contamination.
2. Place the wrench in the vise and secure the end of the Nozzle
as shown to the left.
3. Align Socket tool (T-2961) with Seat/Seal Assembly hex
and place 1” socket wrench onto Socket tool and turn
counterclockwise to remove the Seat/Seal Assembly. Once
the Seat/Seal Assembly is fully unscrewed, the spring behind
the poppet Assembly will push the Poppet Assembly out of the
Nozzle.
4. Remove the old Poppet Assembly and Seat/Seal retainer. If
the Nozzle is only leaking while connected, the current poppet
Assembly does not need to be replaced. However, it should
still be carefully inspected to ensure that all sealing surfaces
are clean and undamaged.
Inspect Seat/Seal Assembly (p/n 14255) to confirm that
receptacle interface seal has been positioned correctly. The
seal should be positioned with the open side facing the retainer
flange. The closed side should be facing towards the retainer
threads.
If purchased separately, the Receptacle Interface Seal must be
assembled with the brass retainer according to Macro Technologies
instructions using the proper seal repair tool kit: p/n 14590. See
replacement of Interface seal if you are repairing the Receptacle
Interface Seal separately.
5. Use the Socket Tool (p/n T-2961) to carefully align Poppet
Assembly and Seat/Seal Assembly.
6. Place the Poppet assembly, Seat/Seal Assembly, and Socket
Tool on the spring with the tool facing away from the nozzle.
Use of Socket tool T-2961 is important and critical in
order to properly guide all components into place. Failure
to properly guide components into place with Socket
Tool T2961 may result in misalignment on critical sealing
surfaces.
If not aligned correctly, the seal on the poppet Assembly
and/or the seal of the Seat/Seal Assembly may become
damaged.
NOTICE
7. Push the Poppet assembly down by hand while threading the
Seat/Seal Assembly clockwise onto the Nozzle. Once you feel
the assembly threading into the Nozzle, you can remove the
pressure.
If assembled backwards, the seal will fail
prematurely.
7

Receptacle Interface Seal
p/n 14591
Seal Repair Tool kit
p/n 14590
Failure to follow the safety warnings may
result in serious injury
8. Attach the Socket Wrench and torque to 45 - 50 Ft-Lbs. When
tightening with torque wrench, the final turns will exhibit higher
levels of torque than by hand. This indicates the thread locking
system is engaging.
6. Slide the seal ring onto the guide and let it rest on the seal.
7. While holding the ring/seal combination as level as possible,
press the seal firmly over the shoulder of the guide and all the
way down to the seal’s final resting place on the shoulder of the
seal retainer.
8. Remove the seal ring then the guide from the assembly and
store the seal ring and guide tools fitted together such that the
sedges that interface the seal will not get damaged. Damage
to these surfaces can cause damage to new seals on future
repairs. The Seat/Seal Assembly is now complete.
At this point, the old Poppet assembly and Seat/Seal Assembly
have been removed from the Nozzle. See Replacement of Poppet
Assembly and Seat/Seal Assembly.
1. Remove all items from their shipment packaging taking care in
handling them so that they are not damaged. Carefully inspect
parts to ensure that all sealing surfaces are clean, free of dirt
and contamination.
2. Remove the old interface seal with care not to scratch the
retainer sealing surfaces.
3. On a clean, flat surface, place the retainer with the threads up.
4. Carefully slide the larger end of the seal guide tool over the
threads until the guide bottoms out on the shoulder of the
retainer.
5. Slide the interface seal over the guide so the open (spring) end
of the seal is facing down towards the retainer. Let it rest on the
shoulder of the guide.
Replacement of Sleeve Assembly
1. Remove the Nozzle from service. Place the Nozzle with the
handles down and in the Connect/Disconnect Position (4). Get
the required tools (5/32” and 1/8” Allen Wrench) and the parts
(Kit Part Number 14103 containing a sleeve, nose piece, 16
balls, 6 guide pins, and a rubber band).
2. Place a rubber band around the balls to prevent them from
falling out during replacement.
Improper torque will cause failure!
Replacement of Interface Seal
If the Nozzle is leaking only while Connected to the receptacle you
may replace the receptacle interface seal without replacing the
entire Seat/Seal assembly (p/n 14255) and the Poppet assembly
(p/n 13960). The current Seat assembly can be used if carefully
inspected to ensure that all sealing surfaces are clean and
undamaged. It is recommended to change the Seat Assembly
every 3rd interface seal replacement. The current poppet assembly
can be used with the new Seat/Seal Assembly if the Nozzle does
not leak when disconnected. If the Nozzle experiences any leakage
while disconnected, both the Poppet and Seat/Seal Assemblies
need to be replaced.
Parts Needed
(Parts sold Separately)
8