Dynablast SQN Series User manual

BEE SERIES
Dynablast Inc.
2625 Meadowpine Blvd.
Mississauga, Ontario L5N 7K5, Canada
1.888.881.6667 www.dynablast.com
MAN-SQN/P-E-0507
SQN/P
OPERATOR'S MANUAL
HOT WATER PRESSURE WASHERS

TABLE OF CONTENTS
PAGE
SAFETY INSTRUCTIONS 1
SETTING UP 2
OPERATION 3
SAFETY COMPONENTS 4
THINGS TO CHECK REGULARLY 5
WINTERIZING YOUR HEATER MODULE 5
INDOOR INSTALLATION 6
SPECIFICATIONS AND FEATURES 7
TROUBLESHOOTING 8 - 9
WIRING SCHEMATIC 10 - 11
WARRANTY POLICY 12
SQN/P SERIES

SAFETY INSTRUCTIONS
1. Read all safety and operating instructions before using the unit.
2. Read warnings on additive containers.
3. Ventilate work area when using toxic or pungent additives to eliminate your expo sure to
toxic fumes.
4. Use protective wear, especially for the eyes and skin.
5. Be careful of slippery floors. Some additives make a normally safe area extremely
slippery and dangerous.
6. Keep children and animals away from the machine and wash area.
7. DO NOT change nozzle size. Each machine is designed to operate with a specific size
nozzle. An incorrect nozzle could cause excessive pressure resulting in pump damage
and possible personal injury. Refer to parts list for correct nozzle size.
8. DO NOT point the nozzle toward an electrical outlet as you risk severe shock and personal
injury
9. Never run the unit in an enclosed area. Exhaust fumes are poisonous.
10. Whenever you stop spraying, always engage the safety latch on the trigger gun.
11. CAUTION - When changing nozzles, always turn the motor or engine off and
always relieve the pressure by triggering the gun. Always engage the safety latch
on the trigger gun. Always change the nozzle with the gun and wand pointed away
from you, and never pointed at yourself or at any other persons or animals.
12. DO NOT smoke when handling fuel.
13. DO NOT ABUSE the high pressure hose by driving over it. The hose may rupture and
injure an unsuspecting passer-by.
14. WARNING- If you smell gas, shut off the gas supply to the appliance, extinguish
any open flame, and test all joints with a soap solution. If the odor persists, call
your gas supplier immediately.
WARNING- Risk of severe personal injury keep clear of nozzle. Do not direct
discharge stream at yourself or at any other persons or animals. The water
discharge from this unit is under extreme pressure and heat (heat, when hot water
washing). This equipment is to be used only by trained operators.
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SQN/P SERIES

SETTING UP
If you find any damage due to shipping when unpacking the machine, contact your dealer
MILLIVOLT SYSTEM
Models M GSQ30N, M GSQ30P are intended to be a non-portable water heater for use with high pressure
washing equipment. There is no electrical connection to the pressure washer. The power for the gas control is
supplied entirely by the 750 millivolt power generator or thermopile. Power is generated when the pilot burner is
lit and will stop if the flame goes out.
FUEL SUPPLY
For stationary installations, have the gas piping installed by a licensed gas fitter. This must be done in
accordance with the gas codes B149.1 for natural gas and B149.2 for propane gas.
FOR MHGSQ30P – PROPANE
For machines with portable LPG tanks with vapour withdrawal, connect the supply hose and regulator into the
POL fitting in the valve on the supply tank. Remember that this fitting has a left hand thread. Open the tank valve
and check for leaks in the propane connections with a soap solution. Depress the pilot valve for approximately a
minute to purge the lines of air. Wait 5 minutes to allow any escaped propane to dissipate before lighting the pilot.
WARNING - Do not use orkli t tanks or this application.
CAUTION - Propane gas in heavier than air and can collect in low hollow areas in an explosive mixture.
Ensure that the areas where you operate this machine are open to breezes, etc.
PROTECT FROM FREEZING
When transporting or storing your module at temperatures below freezing, make sure that the unit has been
properly winterized. (See Winterizing Your Pressure Washer). Even an overnight frost can split a coil or crack a
pump.
THESE MACHINES ARE NOT TO BE B-VENTED.
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SQN/P SERIES

SETTING UP
If you find any damage due to shipping when unpacking the machine, contact your dealer
MILLIVOLT SYSTEM
Models MHGSQ35N, MHGSQ35P are intended to be a non-portable water heater for use with high pressure
washing equipment. There is no electrical connection to the pressure washer. The power for the gas control is
supplied entirely by the 750 millivolt power generator or thermopile. Power is generated when the pilot burner is
lit and will stop if the flame goes out.
GAS SUPPLY
For stationary installations, have the gas piping installed by a licensed gas fitter. This must be done in
accordance with the gas codes B149.1 for natural gas and B149.2 for propane gas.
FOR MHGSQ35P – PROPANE
For machines with portable LPG tanks with vapour withdrawal, connect the supply hose and regulator into the
POL fitting in the valve on the supply tank. Remember that this fitting has a left hand thread. Open the tank valve
and check for leaks in the propane connections with a soap solution. Depress the pilot valve for approximately a
minute to purge the lines of air. Wait 5 minutes to allow any escaped propane to dissipate before lighting the pilot.
WARNING - Do not use forklift tanks for this application - LPG ONLY
CAUTION - Propane gas in heavier than air and can collect in low hollow areas in an explosive mixture.
Ensure that the areas where you operate this machine are open to breezes, etc.
PROTECT FROM FREEZING
When transporting or storing your module at temperatures below freezing, make sure that the unit has been
properly winterized. (See Winterizing Your Pressure Washer). Even an overnight frost can split a coil or crack a
pump.
NOTE: - Models MHGSQ35N, MHGSQ35P, MHGSQ35NEI, MHGSQ35PEI are suitable for connection
to “A” venting when fitted with a draft hood.
Models MHGE500SQ, MHG500PSQ are sutable for connection to “B” venting when fitted with
a draft hood.
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SQN/P SERIES

OPERATION
1. Make sure all switches are in the "OFF" position.
2. Join the heater module to the high pressure outlet of the cold water pressure washer by the 30" connector
hose (a longer hose is available if needed, contact your dealer).
3. Connect the high pressure hose to the outlet of the heater module. It must be rated for at least 250 degree
fahrenheit and 3000 PSI.
4. Light the pilot on the burner as follows:
a. Make sure all switches are off.
b. Turn the control knob on the gas valve to "pilot".
c. Depress for 10 seconds to purge line.
d. While continuing to hold knob push the piezo ignitor button several times until the pilot flame is lit.
e. Continue holding knob for several seconds until the pilot light stays lit.
f. Turn knob to "on" position.
g. If pilot flame extinguishes repeat instructions.
5. Turn on the water supply to the pressure washer. Stay clear of the exhaust stack at all times.
6. Start the cold water pressure washer.
7. Turn on burner and set the thermostat to desired setting.
8. Hold firmly and squeeze the trigger gun.
10. Turn off pressure washer and relieve pressure from hose by squeezing the trigger gun.
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SQN/P SERIES
9. When finished operating, turn off the burner. Continue to spray water until the water is cold.

SAFETY COMPONENTS
FLOW SWITCH
The flow switch prevents the burner from being turned on if there is insufficient water. Proper water flow causes
the magnetic core to be pushed up, closing the reed contact. This contact is interlocked with the fuel solenoid
valve in the oil pump.
SAFETY RELIEF VALVE
The Relief Valve prevents the machine from being subjected to abnormally high pressures. If this situation occurs,
the valve will blow off relieving the pressure in the coil. This valve may also operate if the unloader is adjusted too
high.
THERMOSTAT
The built-in thermostat stops the unit from overheating. Maximum temperature of the unit is 212°F.
HIGH LIMIT SWITCH
The High Temperature Limit Switch is a thermostat which is set to 230°F. This switch is not adjustable and will
only operate when other controls fail to keep the water temperature within the normal operating range. This
switch cuts the power to the fuel solenoid
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SQN/P SERIES

THINGS TO CHECK REGULARLY
1. Check for SYSTEM LEAKS. Leaks in the pressure side of the system can cause premature wear (or even
failuremof the pump. The WARNING signal for this kind of leak is "frequent" cycling of the unloader.
("FREQUENT" means more than once every 2 minutes in the "Gun-Off" position.) Check the gun and swivel
joints for leaks.
2. Use ONLY the type and grade of oil specified for this pump (see "Set Up" Instruction).
3. CHANGE OIL as recommended.
4. After you use chemical additives, thoroughly FLUSH the system with clean water.
5. Inspect the POWER CORD regularly. Also check the POWER OUTLET SOCKET. For safety, replace worn or
damaged parts immediately.
6. Never run the washer without water. TURN WATER ON FIRST.
7. PROTECT FROM FREEZING! When transporting your washer in temperatures below 32°F ( 0°C ).
WINTERIZE the pump, hoses and gun.
WINTERIZING YOUR HEATER MODULE
(This is a good practice if the cleaner is to remain unused for more than 3 - 4 weeks).
WITH A FLOAT BOX
1. Shut off the water supply, and disconnect hose.
2. Remove cover from Float Box.
3. Run the pressure cleaner until the level of the water in the Float Box is just above the outlet screen. Turn off
the cleaner.
4. Fill the Float Box to about _ with windshield washer or plumbing antifreeze.
5. Turn on the Cleaner and open gun until liquid comes out of the nozzle "foamy" or "soapy".
6. Put gun in "OFF" position for 5 seconds to get antifreeze into bypass line. Shut off motor, unit is now
winterized.
CAUTION - If your hose is longer than 26 feet, the Float Box may empty before the liquid from the
nozzle gets foamy. If this happens, refill the Float Box with antifreeze and continue.
WITHOUT A FLOAT BOX
1. Shut off the water supply and disconnect hose.
2. You need a short (2 feet) length of hose with a male garden hose fitting on one end.
3. Connect the short hose to the inlet of the machine.
4. Put the other end of the hose into a container of windshield washer or antifreeze.
5. Turn on Cleaner and open gun until liquid comes out of nozzle "foamy” or "soapy".
6. Put gun in OFF position for 5 seconds to get antifreeze into bypass line. Shut off motor or engine.
7. Unit is now winterized.
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SQN/P SERIES

INDOOR INSTALLATION
NOTE : Machines to be used indoors MUST be in accordance with local regulations and CSA Standards B139
1. Make sure chimney is of suitable size. (9" minimum)
2. Make sure that there is enough air for combustion. (60 sq. in)
3. Be sure to protect against a down draft in below freezing weather.
A DOWN DRAFT CAN CAUSE THE COIL TO FREEZE, RESULTING IN EXPENSIVE DAMAGE!
CHIMNEY SIZE
1. A draft hood is supplied for stationary installation.
2. All venting should be the same size as the draft hood
3. Never use ventpipe smaller than the draft hood.
4. If total run is more than 25', use larger size chimney.
5. A 90 degree elbow is equivalent to a run of 20 feet.
6. If a horizontal run is used, make sure the flow rises at least 1/4" per foot.
COMBUSTION AIR SUPPLY
1. These hot water pressure cleaners burn Natural Gas or Propane This means that air is required for
combustion , for draft diverter dilution and for ventilation.
2. The appliance installer will know how and where to place a supply air duct. Take care that this opening will
not promote drafts which could blow out the pilot light.
3. Keep the area around the machine clear so this air can get to the burner. If the wheels are removed, the
machine should be bolted to a stand 18" off the floor.
APPLIANCE IN CONFINED SPACE
The confined space should have two permanent openings: one near the top of the enclosure and one near the
bottom of the enclosure. Each opening shall have a free area of not less than one (1) square inch per 1000
BTU’s per hour of the total input rating of all appliances within the enclosure. The openings shall have free access
to the room interior which should have adequate infiltration from the outside.
NOTE: - Models MHGSQ35N, MHGSQ35P, MHGSQ35NEI, MHGSQ35PEI are suitable for connection
to “A” venting when fitted with a draft hood.
Models MHGE500SQ, MHG500PSQ are sutable for connection to “B” venting when fitted with
a draft hood.
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SPECIFICATIONS AND FEATURES
MODELS MHGSQ30N MHGSQ30P
SPECIFICATIONS Maximum Pressure Supply 3500 3500
BTU’S 34 000 34 000
Fuel Nat. Gas Propane (LPG)
Burner Voltage Millivolt Millivolt
COIL Coil - Pipe Schedule 80
SAFTEY COMPONENTS Thermostat Standard Standard
Flowswitch Standard Standard
Relief Valve Standard Standard
High Temp Limit Protector Standard Standard
High Pressure Blow Valve Standard Standard
FEATURES Finish – Polyester Powder Included Included
Dimensions (LxWxH) in. 23x22x44 23x22x44
Weight (Pounds) 290 290
SPECIFICATIONS Input Pressure 7 Inches 14 Inches
Manifold Pressure 2.6 Inches 10 Inches
Orifice Size # 3 #6
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WIRING SCHEMATIC
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WIRING SCHEMATIC
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SQN/P SERIES
JOHN BROOKS COMPANY LIMITED

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MHGSQ35P/N
WIRING SCHEMATIC SQN/P SERIES

12
This product is warranted to be free from defects in materials and workmanship under normal use and service, for a period of one year from the
date of purchase, unless stated otherwise below, when operated and maintained in accordance with the Maintenance and Operation
Instructions supplied with the unit. The warranty does not cover misuse or negligence.
This warranty is extended only to the original purchaser. Hoses, spray guns, wands and other accessories are warranted for 90 days. Warranty is
void if repairs are attempted by anyone other than an Authorized Service Centre.
If a difficulty develops with the product, you should contact the nearest Authorized Repair Centre or DYNABLAST INC. office. Only these
locations are authorized to make repairs to the product or replacement of defective parts, which will be done at no charge within a reasonable
time after receipt of the product. Units or parts should be returned at the customer’s expense to the nearest DYNABLAST location or Authorized
Service Centre. Pack unit in a strong carton and pad tightly to avoid damage. Damage in transit is not covered by warranty. Include original
purchase receipt with any claim (but keep a copy for your files).
DYNABLAST INC. liability under warranty is limited to repair of the product and/or replacement of parts and is given to the purchaser in lieu of
all other remedies including incidental and collateral charges. There are no expressed warranties other than those specified herein.
SPECIAL WARRANTIES WARRANTY PERIOD
Honda Engine (warranted by Honda) please refer to your engine owners
manual.
2 year parts and labour
Interpump / General Pump Limited Warranty
(see attached for details)
5 year non-wear parts
Fabricated Components
(frame, coil skin, coil cap, handle, belt guard)
1 year parts, 1 year labour
Burner, Transformer, Control Switch, Safety Switch
Pressure and Flow Switch
1 year parts and labour
Schedule 80 Heating Coil Limited Warranty
*(see below)
5 year parts, 1 year labour
Schedule 40 Heating Coil 2 year parts, 1 year labour
* Limited Coil Warranty (Schedule 80 only)
100% cost of coil replacement, for up to 3 years, including 1 year labour.
50% cost of coil replacement, for up to 4 years, not including labour.
25% cost of coil replacement, for up to 5 years, not including labour .
We must receive the coil serial number section of the coil to substantiate the warranty claim.
We will not replace coils under warranty if the coils have been subjected to misuse such as:
1. Freezing 2. Lime Deposit 3. Other foreign material deposit 4. Shock or Vibration
Any replacement during the warranty period will have a warranty of one (1) year, or the balance of the original warranty, whichever is greater.
Contact your dealer for sales and service support. For your nearest dealer, contact Dynablast Inc. Mississauga, Ontario, Canada at
1.888.881.6667
Coil Warranty Procedure
When it is determined that a heat exchanger coil has failed due to a defect in material or workmanship.
The following steps must be followed: 1) contact John Brooks Company Limited and obtain a go ahead authorization # to proceed with the
repair. 2) locate the source of the water leak and take a picture (digital photo is preferred) of the area affected ,as shown below.
Forward the photo with the warranty claim, or via email. If sending by email please include the warranty claim number.
Fuel Oil Burner Components
The fuel oil burner is warranted against defects in materials and workmanship for the period of one year from date of purchase,
under normal use. All defective parts that are replace under warranty must be returned to John Brooks Company Limited along with a
completed warranty claim form.
On Site Service Policy
Machines requiring warranty repairs will be presented at the customers expense, to an authorized service center.
Customers requesting on site service will incur a travel time charge to be agreed with by the servicing agent. Dynablast Inc. is not
responsible for the travel time of the servicing dealer. Only stationary units will have a 60 day adjustment period where Dynablast Inc.
will incur the traveling time as a part of a regular warranty claim up to a maximum of 2 hours. Stationary units are machines that are once
installed, cannot be moved. (natural gas units, in plant systems).
This is an example
of a coil that has
split due to freezing.
The tell-tail sign is a
split in a horizontal
direction.
WARRANTY POLICY SQN/P SERIES