USA Lab RH Series User manual

Recirculating Heater Manual
Model: RH Series
RH-5L, RH-30L, RH-50L

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Index
1. Safety Instructions and Features
1.1 Safety Instructions
1.2 Purposes and features
1.3 Technical parameters
2. Diagrams
3. Control panel operation
4. Preparing for installation
5. Instructions for installation
6. Notes
6.1 Operating
6.2 Storage
7. Maintenance
8. After-sales service
At USA Lab, safety is our number one priority. The following information provides guidelines
for safety when using USA Lab equipment.
Any piece of machinery can become dangerous to personnel when improperly operated or
poorly maintained.
All employees operating and maintaining USA Lab equipment should be familiar with its
operation and should be thoroughly trained and instructed on safety.
Most accidents are preventable through safety awareness.
Training
It is the responsibility of the customer to ensure that all personnel who will be expected to operate or maintain
the equipment participate in training and instruction sessions and become trained operators. All personnel
operating, inspecting, servicing or cleaning this equipment must be properly trained in operation and machine
safety. BEFORE operating this equipment, read the operating instructions in the equipment manual. Become
thoroughly familiar with the machinery and its controls.

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Safety
• Ensure that all power sources are turned off when the machine is not in use. This includes electrical and
pneumatic power.
• Read the manual for any special operational instructions for each piece of equipment. All USA Lab authored
manuals are typically included with each device as well as posted online at: https://www.usalab.com/resources
• Know how the equipment functions and understand the operating processes.
• Know how to shut down the equipment.
• Wear the appropriate personal protective equipment for the job to be performed (EX: eye protection, gloves,
safety shoes). Ensure that nothing you are wearing could get caught in the machinery.
• When working on or around all equipment, avoid wearing loose clothing, jewelry, unrestrained long hair, or any
loose ties, belts, scarves or articles that may be caught in moving parts. Keep all extremities away from moving
parts. Entanglement can cause death or severe injury.
• For new equipment, check plant voltage with the voltage specified on the machine. Electrical specifications for
your machine are printed on the machine tag. A properly grounded electrical receptacle is required for safe
operation regardless of voltage requirements.
• Use this equipment only for its intended purpose.
• Keep the operating zone free of obstacles that could cause a person to trip or fall toward an operating machine.
Keep fingers, hands or any part of the body out of the machine and away from moving parts when the machine
is operating.
• Any machine with moving parts and/or electrical components can be potentially dangerous no matter how
many safety features it contains. Stay alert and think clearly while operating or servicing the equipment. Be
aware of operations and personnel in your surroundings. Be attentive to indicator lights, warning lights and/or
operator interface screens displayed on the machine and know how to respond.
• Do not operate machinery if you are fatigued, emotionally distressed or under the influence of drugs or alcohol.
• Know where the FIRST AID SAFETY STATION is located.
• Know where FIRE EXTINGUISHING EQUIPMENT is located.
• Never sit or stand on the machine or on anything that might cause you to fall against the machine.
• Rotating and moving parts are dangerous. Keep clear of the operating area. Never put any foreign object into
the operating area.
• Use proper lifting and transporting devices for heavy equipment. Some types of equipment can be extremely
heavy. An appropriate lifting device should be used.
• Use caution when moving portable equipment. In some cases the machinery can be heavy and/or may be top
heavy. Portable equipment can gain momentum during transporting and must always be controlled.

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1 Safety Instructions and Features
1.1 Safety Instructions
ONLY USE DISTILLED WATER IN THE GLYCOL MIXTURE. Any elements, sensors
or switches damaged due to using tap water, WILL NOT BE COVERED UNDER
WARRANTY.
The use of Personal Protection Equipment (PPE) is REQUIRED.
Follow all federal, state and municipal laws, codes and ordinances.
Please make sure the power connection is correct and well-grounded. (see the technical parameters for details)
Tubing lines should be unobstructed without any hard bends in the run. Install gasket in the end of the lines
before using.
Apply a rag to wipe the parts clean after washing away stains; do not use hard objects / abrasives.
Do not use flammable, corrosive or explosive substances on, in or near the equipment.
Do not run the pump dry or without priming.
If there is a problem, do not continue to use the heater. Call us immediately.
Acceptable Transfer Fluids:
70°C - 110°C:Propylene Glycol 99.9% USP Kosher mixed with distilled water. Not more than 50% Glycol.
111°C –275°C: Caldera 7 Silicone Oil.
1.2 Purposes and features
The RH Series is intended to be used as a heater and circulator for the JR / JRE series of reactors. It can heat a
reactor up to 275°C. Closed loop functionality provides greater temperature stability. PID temperature calibration
increases accuracy. Controller display is bright and easy to see from any angle. The heavy duty pump can keep
the flow going strong.

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1.3 Technical Parameters
RH Series Specifications
RH-5L
RH-30L
RH-50L
Reservoir Capacity (L)
5L
30L
50L
Reservoir Dimensions (In)
11" x 11" x 10"
19" x 19" x 12"
20" x 22" x 14"
Temperature Range (°C)
70°C - 275°C
Power Requirements (Phase / V / A)
Single / 220V / 15A
Single / 220V / 30A
Single / 220V / 40A
Plug Type
NEMA 6-15P
NEMA L6-30P
Hardwired - 40A
Heater Output (kW / A)
2kW / 9.09A
5kW / 22.7A
7kW / 31.81A
Temperature Accuracy
+/- 0.2°C
Pump Flow Rate of Water (L/min)
18.3 L/min (oil flow may vary)
Pump Lift (m)
6m
Port Connection Size
1/2" MNPT
3/4" MNPT
Overall Dimensions (In)
12" x 14" x 16.5"
19" x 19" x 24"
20" x 23.5" x 25.5"
Weight (lbs.)
31lbs
68lbs
87lbs

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2 Diagrams RH-5L:

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RH-30L & RH-50L:

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3 Control Panel Operation
1. Pump / Circulator Power Switch
2. Heater and Controller Power Switch
3. Current Temperature Display
4. Target Temperature Display
5. Power Indicator
6. Heater Status
7. Overtemperature Indicator
8. Not Used
9. Set Button (used to change the target temperature)
10. Left Button (used to move the modifying space left)
11. Down Button (used to change the value down)
12. Up Button (used to change the value up)
Notes:
The controller sets higher than 275°C, do not use the heater above this temperature. It will break the
thermocouple (probe).

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4 Preparing for Installation
Before filling or priming your heater circulator. Be sure to add the gaskets to the ends of the tubing. The gaskets
are included in the manual pouch. Leaking will occur if this is not followed.

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5 Installation
Filling the jacket:
Attach the hoses before trying to fill the jacket.
Use the heater circulator to fill the reactor jacket from the bottom to the top.
When filling do not let the pump run dry.
1. Fill the reservoir.
2. Open the outlet valve and turn on the circulator
3. Watch the reservoir lower until half way.
4. Shut the pump off and the close the outlet valve.
5. Repeat 1 –4 until the jacket is full and the liquid returns into the reservoir.
6. Fill the reservoir.
Alternative method (space permitting)
1. Do not attach return line to the heater circulator
2. Close the outlet valve
3. Hold the line above the jacket.
4. Use a funnel to pour fluid into the jacket.
5. Do not fill completely.
6. Attach the return line.
7. Open the outlet valve.
8. Turn on the circulator.
9. Fill the reservoir.