Dynablast HV700F User manual

HV700F HV900F
Operating manual
Dynablast Division of John Brooks Company Limited
2625 Meadowpine Blvd, Mississauga, Ontario L5N 7K5
Ontario/Quebec/Maritimes Tel: 888-881-
6667
Alberta/Manitoba/Sask/B.C. Tel: 800-527-
8592
www.dynablast.ca 4/19 rev 2

1
Table of Contents
Safety Considerations and Warnings 2
Pre-operating Instructions 3
Connecting Operating instructions / Burner Setup 4-5
Operating Instructions 6-8
Maintenance 9-10
Specifications 11
Troubleshooting 12-15
Warranty policy 16
Service Bulletin 17
Illustrated Parts List 18-27
Electrical wiring diagram 28

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SAFETY CONSIDERATIONS AND WARNINGS
Please read this manual completely before installing or operating your Dynablast pressure washer or steam
cleaner.
Professional Service Required: Incorrect installation or misuse of this equipment could result in
server personal injury or death from heavy smoke, fire or explosion.
Nocuous gas hazard: Never run the unit in an enclosed area. Exhaust fumes contain carbon monoxide a
poisonous, odorless, tasteless, invisible gas that can lead to loss of life. Always ensure this machine has proper
ventilation for both the exhaust gases and the required combustion air.
Explosion hazard: This machine is designed to work with No.1 or No. 2 fuel oil. Never use gasoline, crankcase
oil, or any oil that might contain gasoline. An explosive condition could result.
Water injection hazard: High pressure water if directed at any part of your body can tear through skin this can
lead to water injection, which is a very dangerous condition that can lead to loss of limb, or even loss of life.
Never direct high pressure spray towards persons or animals.
Burn hazard: This machine has the ability to product super heater water (steam). As a result all components
downstream of the heater module will be extremely hot. Care needs to be observed when handling parts of this
machine, to avoid burns. Always wear protective clothing (gloves, long sleeves and paints, protective eyewear
safety shoes…etc)
Shock hazard: Never direct high pressure spray towards any live electrical equipment or outlets. A severe
shock and personal injury may result
OUTDOOR USE ONLY!
DO NOT USE GASOLINE, CRANKCASE DRAININGS, OR OIL CONTAINING
GASOLINE OR SOLVENTS
THIS MACHINE IS NOT TO BE CONNECTED TO A TYPE “B”GAS VENT
WARNING: RISK OF INJECTION OR SEVERE INJURY. KEEP CLEAR OF
NOZZLE. DO NOT DIRECT DISCHARGE STREAM AT PERSONS.THIS EQUIPMENT
IS TO BE USED BY TRAINED OPERATORS

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PRE-OPERATING INSTRUCTIONS
Arrange with a qualified electrician to install a properly grounded, if negative & positive power wires lengths are
extended increase gauge size of wire.
Protect the receptacle from splashes, the recommended high above the ground is a minimum four feet, or as
recommended by the local code.
A ground fault circuit interrupter (GFCI) is highly recommended for any electrically power machine that is associated
with water.
Ensure that the power requirements of the machine are met. Low or under voltage may lead to premature failure of
the burner motor.
IMPORTANT!
Do not cut off the ground pin. The operator will be exposed to a shock hazard.
Keep electrical cords and connections dry at all times.
Use only #1 or #2 fuel oil with this burner.
Although no accessories are supplied with this heater module, It is imperative that the correct gun be used
for the correct application. Below are examples of what should be used and for what purpose.
It is critical that when using steam, there is no trigger or valve that will trap the steam.
The high pressure trigger gun MUST NOT be used when using steam
High pressure washer
gun and lance
Steam gun
and lance

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CONNECTING AND INSTALLATION INSTRUCTIONS
Stationary Installations
Ensure that any required plumbing, electrical, and exhaust venting work is done by authorized trade’s people in
accordance with local regulations.
Caution: If the heater module is left unused for extended periods in sub-zero temperature, a column of freezing air
can build up in the venting system. If the building has a negative pressure condition, some of the freezing air will be
drawn over the draft hood, spilling onto the heating coil causing water in the coil to freeze, which may eventually
cause coil to rupture. Have installer ensure that correct draft conditions are maintained to prevent this. Or if the heater
module is installed on a remote service vehicle steps need to be taken to ensure the heater module if properly
winterized at all times when not in use.
Remote piping
If you are installing permanent piping runs from your Dynablast unit to remote wash locations, use only Schedule 80
pipe and heavy duty fittings rated for the operating pressure of your pumping module or use pressure or steam rated
reinforced flexible hose suitable for the operating pressure.
Relief Valve
The units come complete with pressure relief valve fitted. The relief valve is extra protection against damage that
could be caused by malfunctioning controls or excessive water pressure.
Protection from Freezing
If your unit is likely to be exposed to freezing temperatures, it can be extensively damaged by water freezing inside
the machine. Freezing can cause the heat exchanger coil to split. Freezing can cause pump heads to crack.
Damage from equipment freeze up is not covered by warranty. The most dependable approach to cold weather
protection for your machine is to not expose it to freezing temperatures. If you must risk freezing the unit, it should
either have all of the water drained from the complete unit or the complete unit should be filled with a suitable
antifreeze solution.
Burner Set up
Plan your installation carefully before you begin. Determine how you are going to supply fuel (#1 or #2 fuel oil) and
electricity (if applicable) to the unit. The fuel tank for the heater module needs to be located near enough to the
module to ensure proper drawing conditions are met for the fuel pump. This module uses a 2 line fuel system (one
feed line, one return line). Connect the feed line to the inlet connection of the fuel strainer (as shown below). Connect
the return line (that will return fuel back to your fuel supply tank) Fuel line should be a minimum of ¼” inside diameter,
flexible hose. The maximum vertical high of the suction line is 6 ft, and a total length of 40 ft. no copper tubing should
be used.

5
Fuel hook up HV700F / HV900F
If the heater module will be mounted in a remote service vehicle, it must be mounted to a ridged part of the frame to
ensure adequate support. Keep in mind the heat exchanger coil is very heavy with a great deal of mass towards to
top of the coil.
Water connections for HV700F / HV900F
Connect the outlet of the high pressure pumping unit to the cold water inlet of the heater module
Connect you high pressure washing hose, or you low pressure high temperature steam hose to the
out lets of the heater module as indicated above.
Steam ball
valve
Steam outlet
Cold water
inlet
Supply line
connection
Return line
High pressure
outlet

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Fuel supply:
The supply of fuel for the burner should be uninterupted, or continous. This burner uses a 2 fuel line
system, (supply and return). The supply and return lines are to be as short and direct as possible limiting
the vertical suction lift (also consider the fuel level of the tank will drop over time). We recommend the
vertical lift not to be more that 8’. There is a fuel filter with a water seperator. This should be inspected
regualry and maintined. (refer to the maintenance schedule )
OPERATING INSTRUCTIONS
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY RESULT
CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE. DO NOT TAMPER WITH FACTORY
INSTALLED CONTROLS.
BEFORE YOU TURN ON THE BURNER
Ensure the following; You have an adequate supply of #1 or #2 fuel oil.
1) Your electrical supply is adequate.
2) Your supply pump is properly hooked up.
3) Your trigger gun or steam gun is hooked up, and you’ve selected the correct function on the control
panel for the type of gun you will be using. (illustrated below)
To operate high pressure hot water system
a) Connect a high pressure hose, gun and lance to the high pressure side of the outlet of the heat exchanger.
b) Select the high pressure setting on the control panel (as shown below)
c) Set the high pressure ball valves into the high pressure mode configuration (closing the steam side valve
and opening the high pressure side) as illustrated below.
High pressure ball valve open
Steam ball valve closed
Select the desired
Temperature

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d) Be sure water can flow to the heater coil before turning on burner switch. Start the pumping unit involved
until a steady stream of water is flowing from the spray gun (holding the spray gun open. Turn burner switch
to “ON” position. Burner will ignite and remain in operation as long as there is sufficient water flow to satisfy
the flow switch and temperature limit control. To shut off main burner, turn burner switch to “OFF”.
Holding the gun/wand with both hands, pull the trigger gun open and check for proper operation and then proceed
with your cold water washing task.
Shutdown Procedure
 Turn the burner control switch to the “OFF” position and continue to run water through the unit until the heater
coil is completely cooled to inlet water temperature. This procedure reduces the tendency of scale to accumulate
inside the heat exchanger coil.
If using a trigger gun (only on high pressure mode) after the high pressure pumping unit has been turned off.
Pull the trigger of the gun to relieve any trapped high pressure.
 Disconnect the gun/wand from the outlet hose and drain the water from the gun/wand by holding the trigger gun
open and pouring any water out backwards through the gun.
 If you want to wash with hot water or you want to steam clean, turn the burner control switch to the ON position.
The burner will only operate if there is water flowing past the flow switch mounted under the heater module.
Using the Steam Option
WARNING: IT IS VERY UNSAFE TO OPERATRE ANY PRESSURE WASH EQUIPMENT IN STEAM MODE WITH A
TRIGGER GUN OR ANY OTHER TYPE OF VALVE ON THE OUTLET SIDE OF THE UNIT. ALWAYS INSTALL THE
OPEN STEAM WAND BEFORE SETTING THE UNIT TO PRODUCT STEAM.
a) Install a steam rated hose and open flow through gun on only the steam the side of the outlet.
b) Change the valve setting for the steam configuration (as shown)
Steam hose must be rated for steam, and must only be used for steam and not for high pressure washing.
High pressure ball valve
closed
Steam ball valve open

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Before adjusting the machine to produce steam output, remove the pressure washer trigger gun/wand and install the
open steam clean wand.
After installing the steam wand and Hose, turn the pressure adjustment control down to 350 psi. Using the
steam wand with the pressure turned down to 350 psi reduces the volume of water flowing through the
heater coil thereby raising the outlet temperature from the coil. A temperature gauge is mounted at the coil
outlet.
Steam operation continued.
c) Select the steam setting on the control panel.
d) Set the thermostat for desired steam temperature.
e) Reduce the amount of water inlet flow by adjusting the pressure setting of you high pressure pump. This will
allow a higher percentage of water to bypass back to the feed tank.
f) Be sure water can flow to the heater coil before turning on burner switch. Start the pumping unit involved
until a steady stream of water is flowing from the steam nozzle. Turn burner switch to “ON” position. The
burner will ignite and remain in operation as long as there is sufficient water flow to satisfy the flow switch
and temperature limit control.
Shutdown Procedure
Turn thermostat to “OFF” position and then continue to run water through the unit until the heater coil is completely
cooled to inlet water temperature. This procedure reduces the tendency of scale to accumulate inside the heat
exchanger coil
Note: When replacing the outlet hose on a machine equipped with a combination steam option, always use a
factory supplied replacement hose or an acceptable alternative. Failure to use the correct hose could result
in hose failure and severe burn injuries.
WARNING: Any metal parts that are exposed to the flow of the superheated water, such as the steam wand
and hose couplings, become very hot during steam operation. Exercise extreme caution around these parts
and wear protective clothing.

9
Caution: DO NOT attempt to start the burner when excess fuel has accumulated, or when the heat exchanger coil is
full of vapors, or when the combustion chamber is hot.
Vapor-Filled combustion chamber: Allow the unit to cool off and all vapors to dissipate before
attempting an- other start
Oil flooded combustion Chamber: Shut off the electrical power and the oil supply to the burner, then
clear all accumulated oil before continuing
When changing nozzles, always cool down water coil then turn off the machine, release high pressure trapped inside,
latch the trigger lock on the gun. Always point the nozzle away from you during this process. Never point the nozzle
towards any other persons or animals. Ensure the replacement nozzle is firmly secured in it’s position before you
start washing.
Maintenance
To remove any loose rust or scale which could become loose and clog the outlet nozzle or affect normal pump
operation, flush the machine for about two minutes prior to using it for the first time and again if the machine has not
been used for a few days. Flush the machine by removing the nozzle from the wand or by removing the complete
gun/wand assembly from the output hose and then turning on the pumping module. (It is not necessary to operate
the heater while you are flushing the unit.)
High pressure nozzle replacement interval: replace the high pressure nozzle whenever there is a noticeable drop in
performance. Use the correct size orifice than matches the out flow rate and pressure of the pumping unit.
High pressure hose maintenance check: visually inspect high pressure hoses dally. Check for any sections of the
hose that have signs of abrasion on the out sleeve. Ignoring this could lead to a hose rupture, or high pressure pin
hole leak.
Water Hardness and Scale Buildup
Units operated in areas with "hard" or high mineral content water supply are often prone to developing a scale buildup
within the heat exchanger coil (similar to deposits seen in electric kettles used to heat "hard" water). The tendency
for scale to accumulate can be minimized by completely cooling the coil after each use. Allow water to flow through
the coil with the burner turned “OFF” until the coil has cooled to the temperature of the inlet water. When water
conditions are such that scale buildup is inevitable, we recommend checking for visible accumulation of scale in the
heater coil regularly. If there is any scale visible inside the pipe at the heat exchanger outlet, have the coil de-scaled
by a qualified service technician. Refer to the de-scaling procedure outlined later in the appendix.
Check for scale buildup in the coil. Remove the hose from the heat exchanger outlet and look for any visible scale
accumulation. Excessive scale build up will reduce the heat transfer from the burner to the water, thus reducing the
effectiveness of the heater module.
DESCALING THE COIL
WARNING: Coil de-scaling using acid should only be done by qualified personnel.
The best way to acidize the coil is with a circulating pump capable of handling acids:
1. Fill a plastic container with a suitable acid diluted with water to the desired strength.
2. Connect the discharge from the circulating pump to the hot water outlet on the water heater with a suitable hose.
Connect the inlet of the circulating pump to the acid container with the suction hose. Disconnect the water

10
heater inlet hose form the pump module and use it as a return hose to the acid container. Start the pump,
circulating the acid solution through the coil and back into the acid container, As the acid dissolves the scale it
becomes neutralized, so about every five minutes add more acid to the container until all the scale has been
removed from the coil. Flush out coil thoroughly with water after de-scaling.
If no circulating pump is available, another good method can be used:
1. Remove high limit control and piping from coil outlet. Install a standpipe on the outlet of the coil. Disconnect the
water heater inlet hose from the pump module and run to a drain or suitable container.
2. Remove cap from standpipe and pour in about 1/2 gallon of acid diluted 50/50 with water. Screw cap back on
stand pipe immediately. Caution: Do not stand directly over chamber when pouring, as acid may blow back
upon contact with scale. After ten minutes, pour more acid into chamber. Repeat same procedure until coil is
free of scale. Flush out coil thoroughly with water after cleaning. Caution: Never allow acid to remain in coil for
long periods of time.
Outlet Accessories
Most pressure wash applications are made easier to perform by using the outlet device that best suits the task at
hand. The list below summarizes the most common types of outlet devices - consult with your Dynablast dealer for
more information.
Standard Pressure Wash Nozzles
The standard pressure wash nozzle that is normally supplied with your Dynablast unit has an orifice sized for the
output specifications of your unit. However, there is a wide variety of spray angle patterns available for most orifice
sizes. Your Dynablast dealer usually stocks angles ranging from 0° to 40° for common orifice sizes and your dealer
can advise you which pattern will work best for your application.
Specialty Nozzles
Consult your dealer for demonstrations of rotary nozzles (intensifiers), foam lances, wet sandblasting attachments,
variable spray angle nozzles, water brooms and sewer and pipe cleaning nozzles.
Wands
Wands are available in a wide variety of lengths. Short wands simplify access in confined areas; long wands reach
into those awkward spots and minimize ladder movement. Your Dynablast dealer usually stocks a complete range of
sizes.
Pressure gauge fuel line
With respect to the pressure gauge fuel line, high pressure fuel line must be used for fuel line going from the burner
to the fuel pressure gauge (high pressure side).
Must be rated minimum 200 psi
Fuel nozzle
Change fuel nozzle every 6 months.

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Specifications
MODEL HV700F HV900F
SPECIFICATION
MAX PRESSURE (psi) 3500 3500
HEAT ENERGY (btu) 700,000 900,000
FUEL TYPE
no 1 OR no 2 FUEL
OIL
no 1 OR no 2 FUEL
OIL
BURNER VOLTAGE 120V / 4.8 AMP 120V / 4.8 AMP
BURNER
BRAND WAYNE BECKETT
MODEL NUMBER EH CF800
FIRING RATE (GPH) 5.03 5.81
STACK DIAMETER (IN) 10" 12"
FUEL PRESSURE (PSI) 125 135
FUEL NOZZLE 4.5 80°B 5.0 80°B
SAFETY
COMPONENETS
THERMOSTAT STANDARD STANDARD
FLOW SWITCH STANDARD STANDARD
HIGH TEMPERATURE
LIMIT PROTECTOR STANDARD STANDARD
HIGH PRESSURE BLOW
OFF VALVE STANDARD STANDARD
FEATURES
PORTABLE NO NO
FINISH POLYESTER POWDER POLYESTER POWDER
DIMENSIONS (LxWxH) (IN) 26.5 x 26.5 x 58 26.5 x 26.5 x 64
WEIGHT (LBS) 790 890
COIL 3/4" SCH 80 PIPE 3/4" SCH 80 PIPE
Initial factory settings:
HV700F Air band ½ open
HV900F Air band 5 Air shutter 9
Air Band Position Indicator
Air Shutter Position Indicator

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Troubleshooting Guide
WARNING: POTENTIAL FOR FIRE, SMOKE AND ASPHYXIATION HAZARDS
Repairs or adjustments to the burner must ONLY be carried out by a professional, qualified oil fired
burner Technician. Incorrect installation, adjustment or misuse of this burner could result in death,
severe personal injury, or substantial property damage.
TROUBLE
POSSIBLE CAUSE
REMEDY
Burner will not ignite
No fuel or contaminated fuel
Fill fuel tank and check fuel filter for
water and other contaminants.
Primary control soft lockout
(Refer to guide below)
Reset primary control (hold for 15sec
and release)
See controller image below
Primary control hard lockout
(Refer to guide below)
Reset primary control (hold for 30+sec
and release)
See controller image below
Faulty thermostat
Replace
Plugged oil nozzle
Replace (do not clean)
Electrodes
out of alignment
Adjust.
Electrodes insulator failure
Check for breaks, cracks, or sparks
trails-Replace.
Water flow switch not closing
Adjust, repair or replace.
Fuel solenoid valve not opening
Clean, repair or replace.
Weak transformer
Clean and
check transformer
terminals. Replace if necessary. Check
for spark.
Faulty burner oil pump
Adjust or replace
Burner will ignite and run
but flame is lost shortly
thereafter
Air trapped in fuel system
Bleed fuel system
Thermostat set too low
Adjust
thermostat
Faulty thermostat
Replace
Faulty flow switch/flow switch
probe
Replace
Faulty Primary control
(Refer to guide below)
Replace
Surface of Cabinet getting
hot
Tear in insulation around coil
Repair or replace
Gap between coil insulation
and top cap
Remove cap and add or adjust
insulation to remove gap
Coil bottom insulation
disturbed
Remove coil repair or replace bottom
insulation
Misaligned burner flame tube
Inspect for visual damage to flame
tube flange assembly. Adjust, repair or
replace flame tube assemblies.
Water leak
Loose fitting(s)
Tighten fitting(s)

13
Frozen coil
Repair or Replace.
Broken fitting(s)
Replace.
Severe condensation
Check insulation on bottom and
around coil. Repair any tears or gaps in
insulation.
Burner runs
but does not
run smooth
Air band open too much or too
little
Adjust air band
Fuel filter/fuel connections
loose
Tighten or repair
Fuel nozzle clogged
Replace fuel nozzle
Air in fuel system
Bleed Fuel system
Unit Smokes
Improper fuel
Use No. 1 or
No. 2 Fuel Oil
Combustion air insufficient
Adjust air band
Fuel nozzle interior loose
Replace nozzle
Electrodes misaligned
Adjust electrodes
Excessive soot build up on coil
Clean coil
Fuel filter clogged
Clean fuel filter/replace
Improper
fuel pressure
Fix visible leaks. Check for clogged fuel
lines. Service or replace fuel filter
and/or fuel pump.
W
ater temperature lower
than normal
Thermostat set too low
Adjust thermostat
Water inlet temperature lower
than normal (50°F)
Not
applicable
Water flow rate higher than
normal
Adjust flow rate to machine
specifications
Coil limed up
Descale coil
Improper combustion
Readjust burner
Thermostat malfunction
Replace
Blowing Fuses
Dead short
Check all wires and connections
Wrong
fuse
Replace with proper rated fuse
Clogged or seized fuel pump
Repair or Replace
Burner drawing too much
current
Replace burner or repair burner
components
Motor seized
Replace burner motor
Broken blower wheel
Replace blower wheel
Burner
continues to run
after washing is stopped
Faulty flow switch/flow switch
probe
Replace flow switch/flow switch probe
NOTE: Use replacement insulation of manufacturer specifications.

14
Beckett CF800 / Wayne EH Oil Burner with integrated Controller
Refer to Beckett & Wayne owner’s manual.
Getting to know your 120V primary control

15
Refer to Beckett & Wayne owner’s manual.

16
Warranty Policy
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
Fabricated Components 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)
3 year parts, 1 year labour
Schedule 40 Heating Coil 2 year parts, 1 year 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

17

18
Parts Breakdown HV700F

19
Parts Breakdown HV700F
BURNER ASSEMBLY
ITEM NUMBER PART NUMBER DESCRIPTION QUANTITY
1 HWHE31761-082 GUN ASSEMBLY 1
2 HW4.580B FUEL NOZZLE 1
3 HWHE13286 ELECTRODE KIT 1
4 HWHE21126 BURNER MOTOR 1
5 HWELBC52171-K 4X4X2 STEEL JUNCTION BOX 1
6 HWHER8184G1031 120V PRIMARY CONTROL 1
7 HWHE101295-SERE WAYNE IGNITER 1
7 HWHE51827U BECKETT IGNITER 1
8 HWFI125-4B BARB FITTING 1
9 HW7006U CAD CELL 1
10 HWHE100610-001 FUEL SOLINOID 1
11 HWHE14375 FUEL PUMP 1
12 HWFI725-4B BARB FITTING 5
13 HWFID1495B-L BRASS BULK HEAD FITTING 1
14 HWFI116-B BRASS ELBOW 1
15 HWHEPFQ807 FUEL PRESSURE GAUGE 1
16 HWHE12484 BURNER GASKET 2
17 HWHE140R FUEL FILTER 1
18 HWFIS1022-B HEX NIPPLE 1
19 HWEP24409 FUEL FILTER BRACKET 1