Reliable QRM2 Series User manual

Reliable QRM2- Series IOM_Rev 1.7_2-4-20
QRM2- Series
Riser and Tank Mounted
Quiet Oil-less Air Compressors
Installation, Operation and
Maintenance Manual
For 60Hz Models Only
Reliable Automatic Sprinkler Co., Inc.
103 Fairview Park Drive, Elmsford, New York 10523
800-55-RASCO (800-557-2726) Technical Support
www.reliablesprinkler.com

1
Table of Contents
Section 1 - Safety & Warnings
1.1 - Safety Guidelines
1.2 - General Information
1.3 - General Safety Information
1.4 - Safety Notes
Section 2 - Receiving
Section 3 - Installation Location
Section 4 - Mounting
4.1 - General Information
4.2 - Basic Instructions - Riser Mounting Bracket
4.3 - Basic Instruction - QRM2- Mounting Bracket
Section 5 - Lubrication
Section 6 - Piping
6.1 - Piping Instructions
6.2 - QRM2- Series Riser Mounted Quiet Oilless Air Compressor Installation Drawing
6.3 - QRM2-T Series Tank Mounted Quiet Oilless Air Compressor Installation Drawing
Section 7 - Wiring
7.1 - Wiring Instructions
7.2 - Oilless Air Compressor Single Phase Wiring Drawing
Section 8 - Adjusting the Pressure Switch
Section 9 - Maintenance Instructions
Section 10 - Troubleshooting Guide
Section 11 - Warranty Policy

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Section 1 - Safety & Warnings
1.1 Safety Guidelines
This manual contains information that is very important to know and understand. This information is provided for SAFETY and
to PREVENT EQUIPMENT PROBLEMS. To help recognize this information, observe the following symbols.
- Danger indicates an imminently hazardous situation which, if not avoided, WILL
result in death or serious injury.
- Warning indicates a potentially hazardous situation which, if not avoided COULD
result in death or serious injury.
- Caution indicates a potentially hazardous situation which, if not avoided, MAY
result in minor or moderate injury.
- Notice indicates important information, that if not followed may cause damage to
equipment.
1.2 General Information
This compressor is intended for installation indoors for use on dry sprinkler systems in accordance with the Standard for
Installation of Sprinkler Systems, NFPA 13 and the National Electrical Code, NFPA 70. The compressor should be sized to
restore and maintain the air pressure in the sprinkler system in accordance with the requirements in NFPA13.
1.3 General Safety Information
1. Read all manuals included with this product carefully. Be thoroughly familiar with the controls and the
proper use of the equipment.
2. Follow all local electrical and safety codes as well as National Electrical Codes (NEC), Occupational
Safety and Health Act (OSHA), and National Fire Protection Association (NFPA).
3. Only persons familiar with these rules of safe operation should be allowed to use the equipment.
4. Keep visitors away and NEVER allow children in the work area.
5. Wear safety glasses and use hearing protection when operating the unit.
6. Do not stand on or use the unit as a handhold.
7. Periodic inspection and test of this equipment is required. Consult your installer and local codes
to meet all requirements.
8. Check all fasteners at frequent intervals for proper tightness.
1.4 Safety Notes
- This compressor is not equipped and should NOT be used “as is” to supply breathing
quality air.
- Motors, electrical equipment and controls can cause electrical arcs that will ignite
flammable gas or vapor. Never operate or repair in or near flammable gas or vapor. Never
store flammable liquids or gasses near the compressor.
- These compressors are suitable for pumping only atmospheric air. As defined in
Compressed Gas Association Pamphlet G-7, page 3, atmospheric air is a mixture of
elements and compounds where nitrogen and oxygen comprise more than 99% with all
other trace gasses comprising less than 1%. Do not use this compressor in
contaminated environments or for pumping mixtures other than atmospheric air.
DANGER
WARNING
CAUTION
NOTICE
DANGER
WARNING
WARNING

3
- Compressed air contains liquid water and is saturated with water vapor, which can
freeze when surrounding temperatures are lower than 32oF (0oC). Componentselection
to minimize the effects of water vapor must be considered.
- Do not touch any component inside compressor enclosure or on the discharge piping
when the compressor is operating or immediately after it has stopped. The components
are extremely hot and can cause severe injury. Before servicing the compressor,
disconnect the power and wait for its components to cool down.
Section 2 - Receiving
Your compressor is inspected at the factory and packaged to protect against shipping damage. When the compressor is
unpacked, inspect for damage or missing parts. All claims should be settled directly with the freight company.
- Do not operate this compressor if damaged during shipment, handling or use. Any
damage may result in failure and cause injury or property damage.
Section 3 - Installation Location
Locate the compressor in a clean, well ventilated area where air is relatively cool, clean and dry. A 104°F (40°C) maximum
and 40°F (4°C) minimum temperature for surrounding and inlet air are recommended. Provide at least 12 to 18 inches of
clearance from any wall or other obstruction that will interfere with airflow over and through the compressor. Blocking airflow
through the fan may cause the compressor to overheat. Do not place the compressor in an area of excessive heat, such as
near a boiler.
Section 4 - Mounting
4.1 General Information
QRM2- Series Riser mounted units may be mounted to a fire sprinkler system riser with a riser mounting bracket. A riser
mounting bracket and (3) straps are provided. Both tank and tank-less riser mounted units should be connected with a flex
hose (Ordered Separately). The flex hose (P/N 6872000000) must be installed between the compressor or tank outlet and
service piping.
The compressor must be mounted in a flat, level, horizontal orientation. The “L” shaped bracket is provided to ensure this. The
compressor is shipped mounted to the “L” bracket using rubber mounts. This can then be directly mounted and fastened to
the flat riser bracket provided with straps.
WARNING
WARNING
WARNING

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4.2 Basic Instructions - Riser Mounting Bracket
Riser Mounting Kit (RMK) Contents:
A - Mounting Straps: Each RMK comes with 3 mounting straps.
B - Riser Mounting Plate
C - Nuts, Bolts, and Washers.
Necessary for mounting the QRM2- Bracket.
D - Mounting Hooks
Riser Mounting Kit (RMK) Mounting:
Bring the mounting straps in from the back side
through the left hole. Pass over the front of the
Plate and put the strap through the right. Repeat
for straps 2 and 3.
Ensure that the hooks are at the top when installed and that all three straps are fastened tight against
the riser (no slack).
Straps must be 90° angle to riser for proper installation.
IMPORTANT NOTE: Torque straps screws to 35 to 40 in - lbs.
4.3 Basic Instructions –QRM2- Mounting Bracket
1 & 2 - Use the rectangular holes on the bracket to rest it on the riser plate hooks.
A, B, C, D - Securely fasten the QRM2- compressor bracket to the riser plate through the slots
using the hardware from the RMK (riser mounting kit). A socket extension may be required to insert
the bolts.
IMPORTANT NOTE: Torque bolts to 12 ft - lbs
Before mounting the compressor, check that the top surface of the QRM2- bracket is level and
parallel to the top edge of the riser plate.
The compressor comes factory mounted to the compressor bracket. NOTE: Each QRM2- model has
different mounting feet. Mounting holes for all compressors are provided on the QRM2- bracket.
IMPORTANT NOTE: Torque compressor mounting bolts to 12 ft - lbs
B
A
D
D
C
1
2
A
B
C
D

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Section 5 - Lubrication
- This compressor is designed for non-lubricated service. Bearings are permanently
lubricated. Do not lubricate any part of the compressor or motor.
Section 6 - Piping
6.1 Piping Instructions - Compressed air contains liquid water and is saturated with water vapor, which can
freeze when surrounding temperatures are lower than 32°F (0°C). Component selection
to minimize the effects of water vapor must be considered.
Piping between the compressor, accessory items and the sprinkler system must be at least ½” internal diameter to minimize
pressure drop from the compressor to system. Larger pipe size may be required by code and may be substituted with no
adverse effects.
- Smaller line size must not be used and will restrict the compressor flow, lowering
capacity and causing the compressor/motor to work harder, which shortens
compressor/motor life. All piping connected to the compressor must be fully supported
and not transfer any loads to the compressor.
If an air maintenance device (AMD) is used, allow sufficient distance between the compressor and AMD to ensure that the
maximum temperature at the AMD is 200°F or less.
- An AMD must be used with all riser mounted tank units.
All oilless compressors include a relief valve which is installed on the compressor. This valve will open at a preset value above
the pressure switch setting to prevent excess pressure in the event of a switch failure.
- Do not attempt to change the safety relief valve setting.
A manual drain is provided on the bottom of each riser mount model with a tank. Moisture accumulated in the tank must be
drained weekly.
The compressor outlet piping should contain an accessible drain. As a minimum a manual drain may be used, but an automatic
drain is recommended to remove excess water.
- Accumulation of condensed water in the system can cause corrosion of components
and reduction of system capacity.
- Warranty is void if a separate check valve is not installed to prevent water backflow to
compressor.
Optional Flex Hose Installation Instructions:
An optional 30 inch Stainless Steel flex hose is available to aid the air compressor
installation. Part number 6872000000 should be ordered if desired. The flex hose
has ½” NPT male threads on both ends. Attach the flex hose to the air compressor
discharge or the air tank first. Then install a union to connect it to the piping system.
NOTICE
WARNING
NOTICE
NOTICE
WARNING
NOTICE
NOTICE

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Section 6 - Piping
6.2 QRM2- Series Riser Mounted Oilless Air Compressor Installation Drawing

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6.3 QRM2-T Series Tank Mounted Oilless Air Compressor Installation Drawing

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Section 7 - Wiring
7.1 Wiring Instructions - Wiring should be in accordance with the National Electrical Code (NEC) and any local
codes or regulations. Have a licensed and competent electrician ensure that the voltage
supplied matches the compressor voltage.
- Inadequate wiring size can cause insufficient voltage at the compressor during start-up.
Overheating and damage can result to the motor and controls.
- Failure to use the pressure switch may result in overpressure of the compressor or other
components in the system. Overpressure of the compressor can result in blown head
gaskets or other damage.
- Grounding Instructions: This product must be connected to a grounded, metallic,
permanent wiring system, or an equipment grounding terminal or lead on the product.
The supply wire must be of adequate size and no other equipment should be connected
to the same line. The adjacent table lists the recommended wire size for each model
based on a 100’ run and lowest operating voltage. Consult factory for longer runs.
- Single-phase motors include internal thermal
overload protection, which has an automatic reset
device.
- Disconnect electrical power before servicing to
disable reset devices. Thermal protection can
automatically start the motor when the protector
resets.
The motor is pre-wired to the pressure switch provided, which controls starting (cut-in pressure) and stopping (cut-out
pressure) of the motor. The pressure switch is factory set. Tank-less riser mount models have the switch set at 20 cut-in and
26 psig cut-out. Riser Mount with Tank have the switch set at 50 psig cut-in and 70 psig cut-out.
A motor starter can be used, for all single phase models. Consult the National Electric Code and local codes for motor
starter requirements. Refer to the proper wiring instruction drawing for recommended wiring to a starter.
Minimum Recommended Wire Size
60Hz Model #
1 Phase
QRM2-25115
12
QRM2-25220
12
QRM2-25115T
12
QRM2-25220T
12
QRM2-50115
12
QRM2-50220
12
QRM2-50115T
12
QRM2-50220T
12
QRM2-100115T
12
QRM2-100220T
12
WARNING
CAUTION
NOTICE
NOTICE
NOTICE
WARNING

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7.2 Oilless Air Compressor Single Phase Wiring Drawing

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Section 8 - Adjusting the Pressure Switch
STEP 1: Adjust the cut-in and cut-out pressure by turning the Main Calibration Screw; clockwise to increase
pressure, counter-clockwise to decrease pressure.
STEP 2: Adjust the Differential Pressure Screw to change the cut-out pressure without affecting the cut-in
pressure*. Clockwise increases pressure, counter-clockwise decreases pressure.
QRM2- Models with Tank
(RASCO Part Number 6990021905)
Factory Set at 50 PSIG Cut-IN / 70 PSIG Cut-OUT
QRM2- Models without Tank
(RASCO Part Number 6990021904)
Factory Set at 20 PSIG Cut-IN / 26 PSIG Cut-OUT
*Differential Pressure is defined as the difference between cut-out and cut-in pressure. Turning the
differential pressure screw clockwise increases the differential pressure, which increases the cut-out
pressure without changing the cut-in pressure.
QRM2- Replacement Parts
Pressure Switch
Without Tank
Reliable P/N 6990021904
With Tank
Reliable P/N 6990021905
Check Valve
All Models
Reliable P/N 6990021906

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Section 9 - Maintenance Instructions
- Disconnect, tag, and lock out power source then release all pressure from the system
before attempting to install, service, relocate, or perform any service.
The following instructions are based on normal operation. If the compressor is in an excessively dusty area, increase frequency
of maintenance checks.
Weekly:
- Drain condensate from receiver and traps
- Check for unusual noise or vibration
- Clean all external parts of the compressor and
motor
Monthly:
- Manually test safety relief valve
- Inspect air system for leaks
- Tighten fitting, nuts, and screws as required
Note: The QRM2- air filter does not need to be checked or changed except at time of compressor overhaul –
approximately 8,000 hours of operation.
Section 10 - Troubleshooting Guide
Symptom
Possible Cause(s)
Corrective Action
Motor hums and
runs slowly or not at
all.
1. Low or no voltage
2. Shorted or open motor winding
3. Defective check valve
4. Defective pressure switch -
contacts will not close
1. Check voltage during start. Voltage must be within
+/- 10% of nominal voltage to start motor. Increase
wire size if necessary, to lower voltage drop.
2. Replace compressor
3. Replace check valve
4. Repair or replace pressure switch
Reset mechanism
cuts out or fuses
blow repeatedly
1. Insufficient voltage to motor
2. Pressure switch set too high
3. Wrong fuse size
4. Piping too restrictive
5. Defective motor
1. Check voltage during start. Voltage must be within
+/- 10% of nominal voltage to start motor. Increase
wire size if necessary, to lower voltage drop.
2. Consult factory, adjust or replace
3. Be sure fuses, heaters and/or overloads are
properly rated or set
4. Add receiver vessel or increase pipe volume after
compressor
5. Consult factory
Unit short cycles
repeatedly
1. Piping too restrictive
2. Air leaks
1. Add receiver vessel or increase pipe volume after
compressor
2. Repair leaks
Compressor
overheating
1. Dirty intake filter
2. Wrong motor rotation
3. Air flow to fan blocked
1. Clean intake filter
2. Correct rotation
3. Clean air flow to fan or relocate unit
Excessive noise in
operation
1. Damaged bearings
2. Worn piston cup
3. Broken valves
4. Loose fan
5. Damaged fan guard
Contact Reliable for technical support
System pressure
builds slowly
1. Compressor sized incorrectly
2. Leaks or restrictions in piping
3. Dirty intake filter
1. Check system size and compressor sizing
2. Correct leaks and remove restrictions
3. Clean intake filter
WARNING

Section 11 - Warranty Policy
GENERAL PROVISIONS & LIMITATIONS
Reliable Automatic Sprinkler Co., Inc. (the "Company") warrants to each
original purchaser ("Purchaser") of its new products from the Company or
its Authorized Distributor that such products are, at the time of delivery to
the Purchaser, made with good materials and workman- ship. No warranty
is made with respect to:
1. Any product, which has been repaired or altered in such a way,
in the Companies judgment, as to affect the product adversely.
2. Any product, which has, in the Companies judgment been
subjected to negligence, accident, improper storage, improper
installation or application.
3. Any product, which has not been operated or maintained in
accordance with the recommendations of the Company.
4. Components or accessories manufactured, warranted and
serviced by others.
5. Any reconditioned or prior owned product.
Claims for items described in 4. above should be submitted directly to the
manufacturer.
WARRANTY PERIOD
The Company's obligation under this Warranty is limited to repair or, at its
option, replacing during normal business hours at the designated facility of
the Company, any part that in its judgment proved not to be as warranted
within the applicable Warranty Period as follows.
COMPONENTS
Allnon-consumablecomponentsarewarrantedfor12monthsfrom the date
of purchase. Consumables are not covered under warranty. The unit must
have been installed by either a factory authorized distributor or agent in
accordance with the factory recommendations taking into account all other
local siteconditions not originally noted to the factory. The unit must be
operated and maintained in accordance with the Factory
recommendations and original design conditions. Failure to provide such
proof of the above may void warranty.
LABOR TRANSPORTATION & INSPECTION
The Company will repair or replace any product or part thereof which in
the Companies judgment is proved to be not as warrant- ed. Labor costs
are not covered under warranty.
All costs of transportation of product, labor or parts claimed not to be as
warranted and, of repaired or replaced parts to or from factory shall be
borne by purchaser. The Company may require the return of any part
claimed not to be as warranted to one of its facilities as designated by the
Company, transportation prepaid by Purchaser, to establish a claim under
this warranty.
Replacement parts providedunder the terms ofthe warranty are warranted
for the remainder of the Warranty Period of the product upon which
installed to the same extent as if such parts were original components.
DISCLAIMER
THE FOREGOING WARRANTY IS EXCLUSIVE AND IT IS
EXPRESSLY AGREED THAT, EXCEPT AS TO TITLE, THE COMPANY
MAKES NO OTHER WARRANTIES, EXPRESSED OR IMPLIED OR
STATUTORY, INCLUDING ANY IMPLIED WARRANTY OR
MERCHANTABILITY.
THE REMEDY PROVIDED UNDER THIS WARRANTY SHALL BE THE
SOLE, EXCLUSIVE AND ONLY REMEDY AVAILABLE TO THE
PURCHASERAND IN NO CASE SHALL THE COMPANY BE SUBJECT
TO ANY OTHER OBLIGATIONS OR LIABILITIES. UNDER NO
CIRCUMSTANCES SHALL THE COMPANY BE LIABLE FOR
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES, EXPENSES, LOSSES OR DELAYS HOWSOEVER
CAUSED.
No statement, representation, agreement, or understanding, oral or
written, made by any agent, distributor, representative or employee ofthe
Company which is notcontained in this Warranty will be binding upon the
company unless made in writing and executed by an officer of the
Company.
This warranty shall not beeffectiveas to any claim which is not presented
within 30 days after the date upon which the product is claimed not to
have been as warranted. Any action for breach of this warranty must be
commenced within oneyear after the date upon which thecause of action
occurred.
Any adjustment made pursuant to this warranty shall not be construed as
an admission by the Company that any product was not as warranted.
PROMPT DISPOSITION & RETURNS POLICY
The Company will make a good faith effort for prompt correctionor other
adjustment with respect to any product, which proves to be defective
within the warranty period. Before returning any product, write or call the
distributor, agent or authorized company from which the product was
purchased, describing defect and giving date and number of original
invoice, as well as proof of Factory supplied consumables and proof of
scheduled maintenance. No products will be accepted for return without
the Company issuing a “Returned Goods Authorization” (RGA) to the
Purchaser and unless accompanied by a properly authorized RGA
request form initiated by the Purchaser. Return freight must be prepaid
and each returned product must have the RGA number clearly marked
on the product. Title and risk of loss pass to buyer upon delivery to the
common carrier.
PRODUCT SUITABILITY
Many States,Localities and Countries havecodes and regulations governing
sales, construction, installation, and/or use of products for certain purposes,
which may vary from those in neighboring areas. While Reliable Automatic
Sprinkler Co., Inc. attempts to assure that its products comply with such
codes, it cannot guaranteecompliance, and cannot be responsible for how
the product is installed or used? Before purchase and use of a product,
please review the product application, and national and local codes and
regulations, and be sure that the product, installation, and use will comply
with them.
Reliable Automatic Sprinkler Co., Inc.
103 Fairview Park Drive, Elmsford, New York 10523
800-55-RASCO (800-557-2726) Technical Support
www.reliablesprinkler.com