Multiquip c-30hdn User Manual
OPERATION AND PARTS MANUAL
SERIES
MODEL C-30HDN
CONCRETE PUMP
(NISSAN ENGINE)
Revision #11 (03/29/12)
THIS MANUAL MUST ACCOMPANY
THE EQUIPMENT AT ALL TIMES.
PROPOSITION 65 WARNING
PAGE 2 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
SILICOSIS/RESPIRATORY WARNINGS
WARNING
SILICOSIS WARNING RESPIRATORY HAZARDS
Grinding/cutting/drilling of masonry, concrete, metal and
other materials with silica in their composition may give
off dust or mists containing crystalline silica. Silica is a
basic component of sand, quartz, brick clay, granite and
numerous other minerals and rocks. Repeated and/or
substantial inhalation of airborne crystalline silica can
cause serious or fatal respiratory diseases, including
silicosis. In addition, California and some other
authorities have listed respirable crystalline silica as a
substance known to cause cancer. When cutting such
materials, always follow the respiratory precautions
mentioned above.
WARNING
Grinding/cutting/drilling of masonry, concrete, metal and
other materials can generate dust, mists and fumes
containing chemicals known to cause serious or fatal
injury or illness, such as respiratory disease, cancer,
birth defects or other reproductive harm. If you are
unfamiliar with the risks associated with the particular
process and/or material being cut or the composition of
the tool being used, review the material safety data
sheet and/or consult your employer, the material
manufacturer/supplier, governmental agencies such as
OSHA and NIOSH and other sources on hazardous
materials. California and some other authorities, for
instance, have published lists of substances known to
cause cancer, reproductive toxicity, or other harmful
effects.
Control dust, mist and fumes at the source where
possible. In this regard use good work practices and
follow the recommendations of the manufacturers or
suppliers, OSHA/NIOSH, and occupational and trade
associations. Water should be used for dust
suppression when wet cutting is feasible. When the
hazards from inhalation of dust, mists and fumes cannot
be eliminated, the operator and any bystanders should
always wear a respirator approved by NIOSH/MSHA for
the materials being used.
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 3
TABLE OF CONTENTS
MAYCO C-30HDN (NISSAN)
CONCRETE PUMP
Proposition 65 Warning ............................................. 2
Silicosis/Respiratory Warnings ................................. 3
Table of contents ....................................................... 4
Parts ordering procedures ....................................... 5
Pump Specifications .................................................. 6
Engine Specifications ................................................. 6
Pump Dimensions ...................................................... 7
Safety Message Alert Symbols ............................. 8-9
Rules For Safe Operation .................................. 10-12
Operation And Safety Decals .................................. 14
Important Hand Signals ........................................... 15
Pump Components ............................................ 16-17
Control Box Components......................................... 18
Engine Components ................................................ 19
General Information ................................................. 20
How It Works....................................................... 21-22
Inspection ........................................................... 24-26
Initial Start-Up .................................................... 27-28
Operating Information ........................................ 29-32
Towing Guidelines .............................................. 33-34
Trailer Safety Guidelines .................................... 35-37
Maintenance (Pump) ......................................... 38-47
Engine RPM Adjustment .................................... 48-49
Engine Troubleshooting ..................................... 50-51
Wiring Diagram ........................................................ 52
Wiring Diagram (Trailer Lights) ............................... 53
Appendix —
Concrete Mix Information ............................ 54-56
Recommended Shotcrete System .............. 57-58
Recommended Shotcrete Accessories ...... 59-60
Slump Test Procedure ....................................... 60
Explanation Of codes In Remarks Column ............ 62
Suggested Spare Parts ........................................... 63
COMPONENT DRACOMPONENT DRA
COMPONENT DRA
COMPONENT DRACOMPONENT DRA
WINGSWINGS
WINGS
WINGSWINGS
Manifold Assembly ............................................. 76-77
Frame Assembly ................................................ 78-79
Axle Assembly .................................................... 80-81
Muffler, Air filter and Stop Switch Assembly ..... 82-83
Clutch Assembly................................................. 84-85
Radiator & Engine Mounting Bracket Assy. ...... 86-87
Radiator, Mounting And Hoses Assembly ........ 88-89
Control Box Mounting Bracket Assembly.......... 90-91
Control Box Assembly ........................................ 92-93
Battery Assembly ............................................... 94-95
Fuel Tank Assembly ........................................... 96-97
Hopper Assembly ............................................... 98-99
Hood Assembly .............................................. 100-101
Lubrication Panel Assembly .......................... 102-103
Control Cable Assembly ................................ 104-105
Solenoid and Fuseholder Assembly ............. 106-107
COMPONENT DRACOMPONENT DRA
COMPONENT DRA
COMPONENT DRACOMPONENT DRA
(NISSAN ENGINE)(NISSAN ENGINE)
(NISSAN ENGINE)
(NISSAN ENGINE)(NISSAN ENGINE)
Cylinder Block & Oil Pan Assembly .............. 108-109
Cylinder Head & Valve Cover Assembly ....... 110-111
Crankcase Ventilation Assembly ................... 112-113
Piston, Crankshaft & Flywheel Assembly ..... 114-115
Camshaft & Valve Mechanism Assembly...... 116-117
Manifold Assembly ......................................... 118-119
Oil Pump Assembly ........................................ 120-121
Carburetor Assembly ..................................... 122-123
Horn Assembly ............................................... 124-125
Fuel Pump Assembly ..................................... 126-127
Fuel Piping Assembly .................................... 128-129
Governor (Mechanical) & Fitting Assembly .. 130-131
Governor Mechanical Assembly ................... 132-135
Exhaust Tube and Muffler Assembly............. 136-137
Water Pump Assembly................................... 138-139
Ignition System Assembly.............................. 140-141
Distributor Assembly ...................................... 142-143
Alternator Assembly ....................................... 144-145
WINGSWINGS
WINGS
WINGSWINGS
Nameplate and Decals ...................................... 64-65
Compensator Piston Rod Assembly ................. 66-67
Connector Rod - Drive Side Assembly ............. 68-69
Rocker Assembly ............................................... 70-71
Countershaft Assembly ..................................... 72-73
Crankshaft Assembly ......................................... 74-75
PAGE 4 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
Terms and Conditions Of Sale — Parts ................ 146
Mayco Pump Warranty ...........................................147
NOTE
Specification and part
number are subject to change
without notice.
PARTS ORDERING PROCEDURES
r
Ordering parts has never been easier!
Choose from three easy options:
January 1
Effective:
st
, 2006
Best Deal!
Order via Internet (Dealers Only):
Order parts on-line using Multiquip’s SmartEquip website!
■ View Parts Diagrams
■ Order Parts
■ Print Specification Information
Goto www.multiquip.com and click on
Order Parts
Order via Fax (Dealers Only):
All customers are welcome to order parts via Fax.
Domestic (US) Customers dial:
1-800-6-PARTS-7 (800-672-7877)
Non-Dealer Customers:
Contact your local Multiquip Dealer for
parts or call 800-427-1244 for help in
locating a dealer near you.
to log in and save!
Order via Phone:
If you have an MQ Account, to obtain a Username
and Password, E-mail us at: parts@multiquip.
com.
To obtain an MQ Account, contact you
District Sales Manager for more information.
Use the internet and qualify for a 5% Discount
on Standard orders for all orders which include
complete part numbers.*
Fax your order in and qualify for a 2% Discount
on Standard orders for all orders which include
complete part numbers.*
Domestic (US) Dealers Call:
1-800-427-1244
International Customers should contact
their local Multiquip Representatives for
Parts Ordering information.
Note: Discounts Are Subject To Change
Note: Discounts Are Subject To Change
❒ Dealer Account Number
❒ Dealer Name and Address
❒ Shipping Address (if different than billing address)
❒ Return Fax Number
❒ Applicable Model Number
❒ Quantity, Part Number and Description of Each Part
www.multiquip.com
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 5
When ordering parts, please supply:
❒ Specify Preferred Method of Shipment:
✓ UPS/Fed Ex ✓ DHL
■ Priority One ✓ Tr uck
■ Ground
■ Next Day
■ Second/Third Day
NOTICE
All orders are treated as Standard Orders and will
ship the same day if received prior to 3PM PST.
WE ACCEPT ALL MAJOR CREDIT CARDS!
C-30HDN PUMP — PUMP SPECIFICATIONS
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PAGE 6 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
C-30HDN PUMP — PUMP DIMENSIONS
Figure 1. C-30HDN Concrete Pump Dimensions
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 7
C-30HDN PUMP — SAFETY MESSAGE ALERT SYMBOLS
FOR YOUR SAFETY AND THE SAFETY OF OTHERS!
Safety precautions should be followed at all times when
operating this equipment. Failure to read and understand
the Safety Messages and Operating Instructions could result
in injury to yourself and others.
This Owner's Manual has been
NOTE
Refer to the engine manufacturers instructions for data
relative to its safe operation.
Before using this pump, ensure that the operating
individual has read and understands all instructions in
this manual.
SAFETY MESSAGE ALERT SYMBOLS
The three (3) Safety Messages shown below will inform you
about potential hazards that could injure you or others. The
Safety Messages specifically address the level of exposure
to the operator, and are preceded by one of three words:
DANGER, WARNING, or CAUTION.
DANGER
You WILL be KILLED or SERIOUSLY injured if you
do not follow directions.
developed to provide complete
instructions for the safe and
efficient operation of the
Multiquip Mayco
Concrete
Pump.
C-30HDN
HAZARD SYMBOLS
Potential hazards associated with operation of the pump will
be referenced with Hazard Symbols which appear throughout
this manual, and will be referenced in conjunction with Safety
Message Alert Symbols. Some examples are listed below:
WARNING - Lethal Exhaust Gases
WARNING - Explosive Fuel
DO NOT overfill tank, since spilled fuel could ignite if it
comes into contact with hot engine parts or sparks from
the ignition system. Store fuel in approved containers, in
well-ventilated areas and away from sparks and flames.
NEVER use fuel as a cleaning agent.
Diesel engine exhaust gases contain
poisonous carbon monoxide. This gas is
colorless and odorless, and can cause
death if inhaled. NEVER operate this
equipment in a confined area or
enclosed structure that does not
provide ample free flow air.
Diesel fuel
its vapors can cause an explosion if
ignited. DO NOT start the engine near
spilled fuel or combustible fluids. DO
NOT fill the fuel tank while the engine is
running or hot.
is extremely flammable, and
WARNING
You COULD be KILLED or SERIOUSLY injured if
you do not follow directions.
CAUTION
You CAN be injured if you do not follow directions
PAGE 8 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
WARNING - Burn Hazards
Engine components can generate extreme
heat. To prevent burns, DO NOT touch
these areas while the engine is running or
immediately after operations. NEVER
operate the engine with heat shields or heat
guards removed.
C-30HDN PUMP — SAFETY MESSAGE ALERT SYMBOLS
WARNING - Rotating Parts
NEVER operate equipment with covers,
or guards removed. Keep
hands, hair
moving parts to prevent injury.
CAUTION - Accidental Starting
ALWAYS place the Engine ON/OFF
switch in the OFF position. NEVER
perform maintenance on the unit with
the ignition key in the ON position.
CAUTION - Over-speed Conditions
NEVER tamper with the factory
settings of the engine governor or
settings. Personal injury and damage
to the engine or equipment can result
if operating in speed ranges above
maximum allowable.
and clothing away from all
fingers
CAUTION - Respiratory Hazards
,
CAUTION - Sight And Hearing Hazards
CAUTION - Equipment Damage Messages
Other important messages are provided throughout
this manual to help prevent damage to your concrete
pump, other property, or the surrounding environment.
ALWAYS wear approved
protection.
ALWAYS wear approved
hearing
protection.
respiratory
eye
and
NOTE
This
pump
, other property, or
the surrounding environment
could be damaged if you do not
follow instructions.
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 9
C-30HDN PUMP — RULES FOR SAFE OPERATION
■
DANGER - Read Operation And Parts
Failure to follow instructions in this manual may lead to
death!
serious injury or even
operated by trained and qualified personnel only! This
equipment is for industrial use only.
The following safety guidelines should always be used when
operating the C-30HDN structural concrete pump:
GENERAL SAFETY
■
DO NOT operate or service this
equipment before reading this entire
manual.
■
This equipment should not be
operated by persons under 18 years
of age.
■
NEVER operate this equipment without proper protective
clothing, shatterproof glasses, steel-toed boots and other
protective devices required by the job.
■
NEVER operate this equipment when not feeling
well due to fatigue, illness or taking medicine.
■
NEVER operate this equipment under the
influence or drugs or alcohol.
■
ALWAYS check the machine for loosened threads or bolts
before starting.
■
ALWAYS wear proper respiratory (mask),
eye
protection equipment when operating the pump.
■
Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.
■
Manufacture does not assume responsibility for any
accident due to equipment modifications.
■
NEVER use accessories or attachments, which are not
recommended by Multiquip for this equipment. Damage
to the equipment and/or injury to user may result.
This equipment is to be
hearing
and
NEVER touch the hot exhaust manifold,
muffler or cylinder. Allow these parts to
cool before servicing engine or pump.
■
High Temperatures – Allow the engine
to cool before adding fuel or performing
service and maintenance functions.
Contact with
cause serious burns.
■
The engine section of this
pump requires an
adequate free flow of
cooling air.
operate the pump in any
enclosed or narrow area
where free flow of the air
is restricted. If the air flow is restricted it will cause serious
damage to the pump or engine and may cause injury to
people. Remember the pump's engine gives off
carbon monoxide gas.
■
ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.
■
ALWAYS use extreme caution when
working with flammable liquids. When
refueling, stop the engine and allow it
to cool.
■
NEVER
machine. Fire or explosion could result
from
hot!
engine.
■
NEVER operate the pump in an explosive
atmosphere or near combustible materials. An explosion
or fire could result causing severe
death.
■
Topping-off filler port is dangerous, as it tends to spill fuel.
■
ALWAYS remove the
unattended.
■
ALWAYS block the
■
ALWAYS maintain this equipment in a safe operating
condition at all times.
■
ALWAYS stop the engine before servicing, adding fuel or
oil.
■
NEVER run engine without air filter. Severe engine damage
may occur.
■
ALWAYS be sure the operator is familiar with proper safety
precautions and operation techniques before using pump.
hot!
NEVER
smoke
fuel vapors
around or near the
, or if fuel is spilled on a
wheels
components can
bodily harm or even
ignition key
on the unit when using on a slope.
when leaving the pump
DEADLY
PAGE 10 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
C-30HDN PUMP — RULES FOR SAFE OPERATION
■
ALWAYS store equipment properly when it is not being
used. Equipment should be stored in a clean, dry location
out of the reach of children.
■
DO NOT operate this equipment unless all guards and
safety devices are attached and in place.
■
CAUTION must be exercised while servicing this
equipment. Rotating and moving parts can cause injury
if contacted.
■
Keep all
from the equipment at all times.
■
Before start-up, check the hopper and remove all foreign
matter and debris.
■
DO NOT use worn or damaged hose couplings, inspect
all hoses and couplings for wear. Replace any worn or
defective hose or couplings immediately.
■
Keep hands out of the hopper when the engine is running.
■
DO NOT operate unit with the
■
DO NOT disconnect hose couplings or nozzle while under
pressure. Relieve pressure by manually activating
pressure relief valve at manifold.
■
Unauthorized equipment modifications will void all
warranties.
■
Check all fasteners periodically for tightness. Also check
towing tongue bolt, lock nut and wheel lug nuts for wear.
■
Test the
test is to shut down the engine.
■
Refer to the
technical questions or information recommended by
Multiquip for this equipment. Damage to the equipment
and or injury to user may result.
inexperienced
pump's ON/OFF
and
unauthorized
hood open
switch. The purpose of this
people away
.
NISSAN Engine Owner's Manual
for engine
■
■
■
■
■
■
MAINTENANCE SAFETY
■
■
■
■
■
■
If unit is equipped with ball hitch coupler, use only 2" all
steel ball rated for minimum of 6,000 lbs. Use 1" hardened
steel pull pin, if not equipped with ball hitch.
This equipment shall not be towed or operated by
individuals who cannot read understand the signs, decals
or operating instructions.
When towing at night,
DO NOT tow unit with hopper full of material.
DO NOT tow unit with hoses attached.
DO NOT tow unit in excess of 55 MPH on highways..
NEVER lubricate components or attempt service on a
running pump .
ALWAYS allow the pump a proper amount of time to
cool before servicing.
Keep the pump in proper running condition.
Fix damage to the pump immediately and always replace
broken parts.
Dispose of hazardous waste properly. Examples of
potentially hazardous waste are used motor oil, fuel and
fuel filters.
DO NOT use plastic containers to dispose of hazardous
waste.
always
have rear tail lights ON.
TRANSPORTING
■
ALWAYS shutdown engine before transporting the pump.
■
Tighten fuel tank cap securely and close fuel valve to
prevent fuel from spilling.
■
Drain fuel when transporting pump over long distances
or bad roads.
TOWING
■
Before towing, check the hitch and secure the safety
chain to the towing vehicle.
■
When towing, an adequate safety chain must be fastened
to the frame, refer to Towing Guidelines.
■
Tow only with a vehicle and hitch rated to pull a 6,000
lbs. load.
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 11
C-30HDN PUMP — RULES FOR SAFE OPERATION
BATTERY
The battery contains acids that can cause injury to the eyes
and skin. To avoid eye irritation,
Use well insulated gloves when picking up the battery. Use
the following guidelines when handling the battery:
■■
DO NOT drop the battery. There
■
■■
is the possibility of risk that the
battery may explode.
■■
■
DO NOT expose the battery to
■■
open flames, sparks, cigarettes
etc. The battery contains combustible gases and liquids.
If these gases and liquids come in contact with a flame or
spark, an explosion could occur.
■■
■
ALWAYS keep the battery charged. If the battery is not
■■
charged a buildup of combustible gas will occur.
always
wear safety glasses.
EMERGENCIES
■
ALWAYS know the location of the
nearest
■
ALWAYS know the location of the
nearest and
■
In emergencies
nearest phone or
Also know the phone numbers of the nearest
ambulance, doctor
information will be invaluable in the case of an
emergency.
fire extinguisher
first aid kit
always
.
.
know the location of the
keep a phone on the job site
and
fire department
.
. This
■■
■
ALWAYS keep battery charging and cables in good working
■■
condition. Repair or replace all worn cables.
■■
■
ALWAYS recharge the battery in an vented air
■■
environment, to avoid risk of a dangerous concentration
of combustible gases.
■■
■
In case the battery liquid (dilute sulfuric acid) comes in
■■
contact with
immediately with plenty of water.
■■
■
In case the battery liquid (dilute sulfuric acid) comes in
■■
contact with your eyes, rinse eyes immediately with plenty
of water, then contact the nearest doctor or hospital, and
seek medical attention.
clothing or skin
, rinse skin or clothing
PAGE 12 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
NOTES
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 13
C-30HDN PUMP — OPERATION AND SAFETY DECALS
Figure 2 display's the operation and safety decals as they appear on the concrete pump, should any of these decals become
damaged or unreadable, contact the Multiquip Parts Department for a replacement set.
Figure 2. Operation and Safety Decals
PAGE 14 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
C-30HDN PUMP — IMPORTANT HAND SIGNALS
Figure 3 display's the basic hand signals commonly used in concrete pumping operations.
Figure 3. Importand Hand Signals
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 15
C-30HDN PUMP — PUMP COMPONENTS
Figure 4. Major Pump Components
PAGE 16 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
C-30HDN PUMP — PUMP COMPONENTS
Figure 4 illustrates the location of the major components
for the C-30HDN Concrete Pump. The function of each
component is described below:
1. Discharge Cone – Connect 3" elbow to this discharge
port, then connect 3" x 2" reducer to elbow.
2. Discharge Cone Safety Latch – When towing of the pump
is required,
located on the manifold.
3. Rear Running Lights – ALWAYS check and make sure
both the right and left running lights are functioning correctly
before towing the pump.
4. Hopper – Concrete from a Redi-Mix truck is poured into
this hopper. The hopper can hold 6.0 cu. ft of concrete.
NEVER put hands or any other parts of you body into the
hopper.
5. Safety Grill – The safety grill should be locked at all times
when the pump is being towed. Under normal working
conditions, raise and place the safety grill on the support
hooks which are located on splash guard.
6. Shaft Pulley V-Belt –
V-belt for wear and alignment. A defective or misaligned
V-belt can wear prematurely and adversely affect the
performance of the pump. Replace with only manufactures
recommended type V-belt.
7. Distributor –
debris to come in contact with the distributor.
8. Compartment Hood –
hood removed. Installed on the pump frame is a safety
inter-lock device which prevents the engine from starting if
the hood is removed or in the up position (open).
9. Hood Fastener – When the hood is in the down position,
secure the rubber latch to this fastener.
10. Hood Lift Handle – Grip this handle, pull upward then
back to raise the compartment hood.
11. Control Box – Contains the mechanical and electrical
components required to run the pump. Below is a list of
those components:
■
■
■
■
■
■
■
ALWAYS
NEVER
Throttle Control
Choke Control
Low Oil Pressure Indicator
Battery Charge Indicator
Water Temperature Indicator
Ignition Switch
Remote Connector
secure the discharge cone to latch
ALWAYS
allow concrete, water or any foreign
NEVER
inspect the drive shaft
operate the pump with the
12. Radiator/Cap – Fill with a water/anti-freeze type solution
as recommended in the maintenance section of this manual.
ALWAYS
operating level before starting the engine.
13. Fuel Tank/Cap – Fill with unleaded fuel. Fuel tank (cell)
holds approximately 11 gallons (42 liters). DO NOT top off
fuel. Wipe up any spilled fuel immediately
14. Tow End Jack Stand – Use this jack stand to level and
support the pump.
15. Tow Hitch Coupler – Requires a 2-inch ball hitch or a
3-inch pintle. Capable of towing 5,000 lbs. (
16. Safety Chain – ALWAYS attach safety chain to the
towing vehicle. NEVER! tow the pump with the safety
chain unattached.
17. Engine Stop Device – This device will prevent the starting
of the engine when the compartment hood is in the
position. The compartment hood must be in the
position in order for the engine to start.
18. Grease Port Console – This console allows for the remote
lubrication of components on the pump.
19. Access Door – There are four access doors on the pump.
Remove these door to gain access to drive and piston
assemblies when maintenance is required.
20. Drive Chain – Keep this chain properly lubricated and
aligned at all times. Lubricate this chain as specified in the
maintenance section of this maintenance.
21. Rubber Latch – Secure this rubber latch to the hood
fastener whenever the pump is in use or being towed.
22. Tires Ply– The tire ply (layers) number is rated in letters;
This trailer uses 4-ply tires.
23. Chock Blocks – Place these blocks (not included as
part of your concrete pump package) under each trailer
wheel to prevent rolling.
24. Pump End Jack Stand – Use this jack stand to level
and support the pump.
25. Discharge Cone Release Lever – secures the
discharge cone to the "Y" manifold; also relieves
manifold pressure.
26. Documentation Box – Contains engine and pump
operation, parts and maintenance information.
27. Lubrication Box – This box is empty when shipped
from the factory. Please fill with 7 gallons ( 26.5 liters) of
SAE motor oil for first time use. Also check the dual
clean-out point on bottom of lubrication box for a secure
tight fit.
make sure that the radiator is filled
to
the proper
up
down
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 17
C-30HDN PUMP — CONTROL BOX COMPONENTS
Figure 5 illustrates the location of the major
components for the C-30HDN Control Box. The
function of each component is described below:
Figure 5. Pump Control Box Components
1. Throttle Control Knob – This is a variable speed type
control. Turning the throttle lock (CCW) left unlocks the
throttle allowing the throttle control cable to be pulled out to
the desired position. Once the desired throttle position
(speed) has been achieved, turning the throttle lock to the
(CW) right locks it in place. Use the fine tune adjustment
knob to fine tune the engine rpm's.
To place the engine in idle, press the top button inward all
the way.
ALWAYS
NOTE
2. Choke Knob – When the starting of an cold engine is
required, open choke by pulling choke control to extreme
out position. Let engine run for 3-5 minutes, then push choke
knob all the way in (close position).
3. Oil Pressure Indicator Lamp – In the event of low oil in
the engine crankcase or low oil pressure, the oil "
Pressure Lamp
immediately if this lamp is lit.
this lamp is on.
before it is pushed in because if this is
not done first, possible damage could
result to the locking mechanism.
" indicator will be lit.
unlock the throttle control
STOP
the engine
NEVER
run the engine when
4. Battery Charge Indicator Lamp – Indicates if the
5. Water Temperature Lamp – In the event of high engine
6. Ignition Switch – Insert the ignition key here to start the
7. Remote Control Input Connector – Insert the remote
8. Pumping Control Switch – This 3-position switch controls
Oil
9. Hourmeter– Display's the number of hours the pump has
electrical system is charging properly. If the "
Charge
charging system is malfunctioning.
remedy the electrical charging problem.
water temperature (220 degrees Fahrenheit), this lamp will
be lit.
NEVER
engine. Turn the key clockwise to the
continue turning clockwise to the
release. To stop the engine turn the key fully counterclockwise to the
control input cable into this connector.
the pumping of the pump. The
with the remote control unit, the
normal pumping operation, and the
(OFF) prevents pumping.
been in use.
Indicator Lamp
STOP
the engine immediately if this lamp comes on.
run the engine when this lamp is on.
STOP
" is lit, this is an indication that the
STOP
ON
START
position.
left most
position is for use
center
right most
Battery
the engine and
position, then
position and
position is for
position
PAGE 18 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
C-30HDN PUMP — ENGINE COMPONENTS
9
10
12
13
14
11
5
4
3
2
1
FRONT VIEW
6
7
8
TOP VIEW
Figure 6. Nissan Model A15 Basic Engine Components
Figure 6 illustrates the location of the basic components
for the NISSAN A-15 Engine. The function of each
component is described below:
1. Oil Filter – Replace this filter as recommended in the
maintenance section of this manual
2. Oil Pressure Switch – In the event of low oil level, this
switch will shutdown the engine.
3. Starter Motor/Solenoid –
NEVER
allow concrete or any
foreign debris to come in contact with the starter motor/
solenoid.
4. Fan V-Belt –
ALWAYS
make sure that V-belt is properly
tensioned. A loose or defective V-belt can adversely affect
the performance of the pump.
5. Alternator – Provides power to the electrical system.
Replace with only manufactures recommended type
alternator.
6. Air Cleaner – Prevents dirt and other debris from entering
the fuel system. Remove wing-nut on top of air filter
cannister to gain access to filter element. Replace with
only manufactures recommended type air cleaner.
NOTE
Operating the engine without an air
filter, with a damaged air filter, or a filter
in need of replacement will allow dirt
to enter the engine, causing rapid
7. Cooling Fan Blades – Make sure that the blades of the
cooling fan are not
can cause the engine to run hot and overheat.
8. Crankcase Drain Plug – Remove this plug to drain
engine oil from the crankcase. Replace with recommended
engine oil as specified in the maintenance section of this
manual.
9. Fuel Pump/Fuel Filter – Replace or clean the fuel pump
or fuel filter as specified in the maintenance section of this
manual.
10. Distributor –
to come in contact with the distributor.
11. Spark Plug – Provides spark to the ignition system. Set
spark plug gap to 0.6 - 0.7 mm (0.028 - 0.031 inch). Clean
spark plug once a week.
12. Dipstick – Remove this dipstick to determine if engine oil
is low. Maintain oil level at the "H "marking on the dipstick.
NEVER
13. Oil Filler Port Cap – Remove this cap to add engine oil to
the crankcase. Fill with recommended type oil as specified
in the maintenance section of this manual
14. Carburetor –
debris from entering the carburetor. Clean carburetor as
recommended in the maintenance section of this manual.
engine wear.
bent or broken
NEVER
allow concrete or any foreign debris
. A damaged fan blade
run engine with low oil.
ALWAYS
keep dirt, dust, and any foreign
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 19
C-30HDN PUMP — GENERAL INFORMATION
The following operating principles and operating suggestions
should prove helpful in the successful operation of your concrete
pump. Your new “small line” concrete pump has been designed
to give you many years of service when operated properly. A
study of the following paragraphs is important to the successful
operation of your new Direct-flo Concrete Placer.
All concrete pumps require a high level of operator skill and
more frequent service than most of the other construction
equipment. The highly abrasive nature of concrete under pressure
makes it extremely important that expendable wear components
be inspected at regular intervals between jobs to prevent having
to replace these items during a pour.
Experience has proved that inconsistency of batched concrete
mixes and frequent moving of the line requires the operator to
be readily available at all times during pumping to stop the pump
and prevent abuse to the unit which may occur if unexpected
blockages develop.
PUMP MIX GUIDELINES
When ordering concrete, be certain to advise the concrete
supplier that you require a “
will pump a wide variety of materials, but certain basic principles
must be followed to assure successful pumping, as follows:
Generally speaking, the washed concrete sand and #4
aggregate (pea gravel) should conform to A.S.T.M. standards in
regard to sieve analysis. Sands in some areas are washed clean
of the #100 and #200 mesh fines, which results in separation
and jamming in the manifold while pumping under pressure.
If this condition develops, check with your concrete suppliers
engineers and get their recommendations for supplementing
the lack of the fines. The use of locally accepted ad-mixes may
be required. (For example, Pozzolith, Bentonite Clay, Plastiments,
etc.) When properly prescribed, additives form the plastic paste
sometimes necessary to hold the cement and aggregate together.
pump mix
”. The Direct-flo manifold
As a general rule, the use of approximately six sacks of cement,
70% washed concrete sand and 30% #4 pea gravel per yard of
concrete will result in a pumpable mix. The ideal nature of sand
and rock in certain areas may permit you to increase the
percentage of rock or adjust the mix considerably to meet the job
requirements. When possible, you may experiment with various
mixes in your area to determine the degree of versatility of the
Direct-flo Pump.
Uniform gradation of the washed concrete sand and the 1/2”
minus aggregate along with sufficient cement content and water
are important to a successful pump operation.
A recommended pumpable mix design would be 70% sand and
30% aggregate-cement content to be a minimum of 6 sacks.
(564 lbs.)
NOTE
SAMPLE DESIGN MIX-3000 PSI 3/8" SLUMP 4"- 5"
Type II Cement 6.49 sack/cu. yd 611 lbs.
Sand Sat. Surf. Dry 2000 lbs.
#4 Gravel Sat. Surf. Dry 864 lbs.
#3 Gravel Sat. Surf. Dry 0 lbs.
Water 48 Gallons 400 lbs.
Admixture WRDA-79 26 oz.
Water 7.40 gal/sack
Test laboratory data has proven in many areas that the above
mix guidelines have produced concrete rated at 3000 psi (28
day test) and upwards of 5000 psi with an increase in cement.
Your local sand and rock engineers will
give you the S.S.D. weights of sand and
rock required in your local area which
will yield one cubic yard per the above
recommendation.
Total Weight 3,906 lbs
If jamming conditions in the pump or
NOTE
Determine the cause of jamming, correct it and resume pumping.
Trying to force material through under jammed conditions may
result in damage to the drive system, thus voiding any warranty
services.
PAGE 20 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
hose occur for any reason at all, DO
NOT attempt to use more power to
correct the condition.
In some areas where the gradation of sand and rock is ideal and
sufficient cement is used along with admixtures, the Mayco small
line concrete pump will handle up to a 50-50 ratio of sand and
rock.
When the mix is designed for wet gunning applications, it is
normal to increase the cement (up to 7.5 or 8 sacks) and change
the sand to rock ratio to 85% sand and 15% rock.
The Mayco concrete pump will valve efficiently when using
cellular-foam concrete mixes upwards of 70 lbs. per cubic foot
wet density. (Below 70 lbs. materials (roof decks) the valving
becomes inefficient.)
C-30HDN— HOW IT WORKS
The MAYCO concrete pump has one main pumping piston
which is valved by means of two ball checks. (A inlet, and B
outlet.)
The secondary piston is used as a compensator piston to
smooth out the pulsations of a single piston action. Note: The
compensator will not start operating until material is pumped
into the line and back pressure develops.
compensator spring
The
compensator piston rod, deflects with each piston stroke. This
spring cushion
“
and uninterrupted smooth flow of material under average
pumping conditions.
The pumping cylinder (Figure 7) retracts drawing the material
past the ball (A) and filling the cylinder. The compensator piston
is pumping the material out to the nozzle and causing ball (B) to
seat preventing the material from returning to the pumping
cylinder intake.
”, in conjunction with the cam profile, produces
, which is installed on the
An automatic, centrifugal clutch is installed to engage and
disengage the pumping action without stopping or starting the
engine. The
idle speed is approximately 875 R.P.M.; therefore, the clutch is
completely disengaged at idle. The throttle settings while
pumping should always maintain an engine R.P.M. high enough
to prevent the clutch from slipping and burning the clutch lining.
The return spring which is installed on the rocker arm, is installed
to eliminate shock and stress between the cam roller and the
cam weldment when the pump is in operation. If the return spring
is removed or replaced for any reason, maintain the backing
plate dimension of 3” as shown on Figure 3, to produce the
proper pre-loading of the spring for a smooth performance.
centrifugal clutch
is set at 1100 R.P.M. The engine
Figure 7. Pumping Cylinder
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 21
C-30HDN PUMP — HOW IT WORKS
The pumping piston (Figure 8) is forcing the material past ball
(B) and out to the nozzle, also seating ball A so that the material
will not flow back to the hopper. This action also fills the
compensating piston for the next stroke.
Figure 8. Pumping Pistons
Figure 9 shows the relationship between the return spring, the
compensator spring and the rocker arm to maintain a smooth
performance. DO NOT tighten the bolt (Item 1) completely, the
rod end must be able to move.
The return spring is installed to eliminate shock and stress
between the cam roller and the cam weldment when the pump is
in operation. If the
reason, maintain the backing plate dimension (3-inches) as
shown to produce proper pre-loading of the spring for a smooth
performance.
return spring
is removed or replaced for any
Figure 9. Return Spring, Compensator Spring and
Rocker Arm Interaction
PAGE 22 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
NOTES
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 23
C-30HDN PUMP — INSPECTION
CAUTION - General Saftey Guidelines
NEVER operate the pump in a confined
area or enclosed area structure that does
not provide ample
NEVER operate the pumps's engine with the
engine hood removed. The possibility exists
of
hands, long hair
becoming entangled with the V-belt, causing
injury and bodily harm.
NEVER place hands or feet inside the
while the engine is running. ALWAYS shut-down the engine
before performing any kind of maintenance service on the
pump.
Before Starting
1. Read safety instructions at the beginning of
this manual.
2. Removing any dirt and dust that might have accumulated
around the engine cooling air inlet, fuel injection system.
free flow of air
ALWAYS wear approved
protection before operating the pump .
, and
.
clothing
hopper
eye
and
hearing
. ALWAYS make
Engine Oil Check
1. To check the engine oil level, place the pump on secure
level ground with the engine stopped.
2. Remove the dipstick from its holder (Figure 10) and wipe it
clean.
DIPSTICK
3. Check the engine oil level as shown on the dipstick.
4. If the engine oil level is low, add oil through the engine oil filler
hole (Figure 12) with the recommended oil type (Table 3).
Maximum oil capacity is 3-3/8 quarts (3.2 liters).
OIL FILLER
HOLE
Figure 10. Engine Oil Dipstick
3. Check the air filter for dirt and dust. If air filter is dirty, replace
air filter with a new one as required.
4. Check fuel injection system for external dirt and dust. Clean
with dry compressed air.
5. Check fastening nuts and bolts for tightness.
6. Connect Battery
7. Make sure hopper is free of dirt and foreign debris (large
objects over 2-inches)
8. Make sure radiator is filled with proper amount of anti-freeze
water solution (50/50).
9. Make sure all hose lines are in good condition and are working
properly.
Reference manufacturer engine
NOTE
manual for specific servicing
instructions.
Figure 11. Engine Oil Filler Hole
epyTliO.3elbaT
nosaeS erutarepmeT epyTliO
remmuS rehgiHroC°52 03-W01EAS
llaF/gnirpS C°01~C°52 02/03-W01EAS
retniW rewoLroC°0 01-W01EAS
PAGE 24 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
C-30HDN PUMP — INSPECTION
Gasoline Check
1. Remove the gasoline cap located on top of fuel tank.
2. Handle Fuel in a safety container. If the container does not
have a spout use a funnel.
3. Visually inspect to see if fuel level is low. If fuel is low,
replenish with unleaded fuel. When refueling, be sure to use
a strainer for filtration. DO NOT top-off fuel. Wipe up any
spilled fuel.
4. Pay attention to the fuel tank capacity when replenishing fuel.
Refer to the fuel tank capacity listed in Table 5.
WARNING - Explosive Fuel
Gasoline
vapors can cause an explosion if ignited.
DO NOT start the engine near spilled fuel
or combustible fluids. DO NOT fill the fuel
tank while the engine is running or hot.
DO NOT overfill tank, since spilled fuel
could ignite if it comes into contact with hot engine parts or
sparks from the ignition system. Store fuel in approved
containers, in well-ventilated areas and away from sparks and
flames. NEVER use fuel as a cleaning agent.
is extremely flammable, and its
Lubrication Box
The model C-30HDN model features a fully enclosed
lubrication box,
lubrication.
Before using your new pump, 7 gallons of SAE 30 motor oil must
be added directly into the lubrication box. Visually inspect the oil
in the lubrication box by making sure the oil is at the correct
operating level as indicated by the dip stick (Figure 16).
Also reference the oil level decal (Figure 17) adjacent to the
lubrication box.
NOTE
CAUTION -
The oil level must be
level and oil cleaniness.
which utilizes the
Make sure the pump is on a secure
level surface when checking the oil
level inside the lubrication box.
"SPLASH"
method of
Checking Lubrication Oil Levels
checked daily
to ensure adequate oil
DO NOT smoke while refueling, motor fuels are highly
flammable and can be dangerous if mishandled.
Figure 16. Lubrication Box Dipstick
Figure 17. Lubrication Box Oil Caution Decal
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 25
C-30HDN PUMP — INSPECTION
Checking Engine Coolant Level
1. Remove the radiator cap, and check the cooling water level
inside the radiator (Figure 18).
2. Maintain water/coolant level at top of radiator coils.
Figure 18. Radiator Coolant
WARNING - Burn Hazards
NEVER remove the radiator cap when the
engine is HOT! Allow the engine to cool
before remove the cap.
V-Belt Deflection
1. Visually inspect the V-belt for cracks, fraying, wear or oiliness.
2. Make sure V-belt does not the bottom the pulley groove.
3. Check the V-belt tension (Figure 19) by pushing midway through
the two pulleys. The V-belt deflection should be between .300 to
.472 inches (8 to 12 mm).
Figure 19. V-Belt Deflection
3. Check the radiator and hoses for any signs of leakage.
4. If cooling water is dirty, flush the cooling system.
5. When using antifreeze, mix the antifreeze coolant with water.
Observe the instructions on the antifreeze container. Usually
a 50/50 mixture is a good choice.
6. When replacing the radiator cap, be sure to fit it securely back
onto the radiator. If replaced loosely or incorrectly, the cooling
water will quickly evaporate, causing the engine to overheat.)
PAGE 26 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
C-30HDN INITIAL START-UP
Starting
CAUTION - General Saftey
DO NOT attempt to operate this concrete pump
until the Safety, General Information and
Inspection sections have been read and
understood.
1. Turn the inner most knob counter clockwise to unlock the
throttle cable
THROTTLE
ADJUSTMENT
KNOB (COARSE)
(PUSH/PULL)
(Figure 17).
UNLOCKING
KNOB
UNLOCK
LOCK
THROTTLE
ADJUSTMENT
KNOB (FINE)
(TURN CW/CCW)
3. Pull the
choke knob
(Figure 19) outward about half way.
In cold weather, start the unit with the choke in the fully closed
position.
In summer time or when the engine is warm,
the
unit can be started with the choke halfway or completely
open
Figure 19. Throttle Control Knob
4. Place
the
pumping control switch
(Figure 20) in the
OFF position.
Figure 17. Throttle Control Knob (Un-locking)
2. Push the outermost button inward, then pull out about half
way. This will set the throttle at half speed (Figure 18).
5. Insert the ignition key into the
key to the ON position, then to the START position (Figure
PUSH-IN, THEN PULL
TO SET THROTTLE
(RPM’s)
PUSH ALL THE WAY IN
TO IDLE ENGINE
21). Release the key when the engine starts.
Figure 18. Throttle Control Knob (RPM Adjust)
Figure 20. Pumping Control Switch (OFF)
ignition switch
andturn the
Figure 21. Ignition Switch
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 27
C-30HDN INITIAL START-UP
6. Verify that the
ture
status lamps (Figure 22) are all OFF. If any of these
lamps are ON, stop the engine and correct the problem.
Figure 22. Control Box Status Lamps
7. Let the engine run for 3-5 minutes before putting pump into
operational use. Push the
8. Listen for any abnormal sounds. If any mechanical or electrical problems exists, STOP the engine and correct the
problem.
9. To begin pumping concrete, place the
in the ON position (Figure 23).
switch
oil pressure, battery
choke knob
and
water tempera
in all the way.
pumping control
-
System Shut-Down
1. Place the
(Figure 20).
2. Push the
engine run at idle speed for 3-5 minutes.
3. Turn the
4. Clean pump as referenced in the maintenance section of
this manual.
pumping control switch
throttle contro
ignition key
l in all the way (idle). Let the
(Figure 21) to the OFF position.
in the OFF position
Figure 23. Pumping Control Switch (OFF)
PAGE 28 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
C-30HDN PUMP — OPERATING INFORMATION
OPERATING SUGGESTIONS
1. A well-planned location for the pump and routing of the hose
before starting a pour may save subsequent moves throughout the job.
2. Before concrete is discharged into the hopper, it is suggested
that 3 to 4 gallons of water be sprayed into the hopper,
followed by approximately 5 gallons of a creamy cement and
water slurry (1/2 bag of cement to 5 gallons of water). This
procedure lubricates the hose and prevents separation and
blockages in the hose.
Getting the concrete to flow through the
NOTE
hose at the start of the pumping cycle
can be one of the most critical operations of the pour.
Manually
starting, NOT remotely.
operate the throttle when
C. If it is necessary to wait 10 minutes or more for another
D. When pumping stiff mixes and there is waiting time
E. When the pumping job requires a stiffer mix, the follow-
CAUTION - Inspect Hose Lines
If hoses or lines are
kinked
are
the pump pressure could straighten out the kink or force out
the blockage. This rapid surge of material could cause the
lines to
personnel.
Inspect the lines at all times to prevent the above
conditions
3. It is important that once the slurry procedure is completed,
and you have started concrete flowing through the hose, do
not stop the pour until all the slurry is pumped out and the
concrete has reached the end of the hose. The only time to
stop the pump at the start is if a blockage occurs.
when starting up or during the pumping cycle,
whip
or
blocked
move
in a manner that could cause injury to
for any reason, or if the lines
NOTE
F. Hose sizing is very important: We strongly recommend
5. Following the pump operation, proper wash out of all
materials or “build-up” within the pump manifold and hoses
will prevent problems when starting the next job.
load of concrete, it is wise to start the pump and pump
6 or 8 strokes every 5 minutes to prevent setting of the
mix in the system. If waiting time is excessive, it would be
wise to wash out the pump and hoses and start over
when the new truck arrives.
between redi-mix trucks, it is advisable to add some
water to the last hopper of material and “hand mix” to
ensure an easier start with the following load.
ing method is suggested for starting: Take a water hose
with a nozzle on it and apply water with a fine spray to
the concrete as it comes down the redi-mix chute into the
pump hopper after the slurry procedure is completed
and you are ready to start pumping.
Using this procedure will make it easier to pump through
the clean hose.
Once the concrete has reached the
end of the hose, do not apply any more
water in this manner as this procedure
is used on the start only.
on harsh mixes, ver tical pushes, stiff concrete, shotcrete,
long pushes, that a 2 -1/2” line be used as far as possible.
The advantages of using the 2 -1/2” line are improved
pumpability, less pumping pressure and less wear on
the pump.
4. When the pump is stopped for any reason during a pour; e.g.,
moving hose, waiting for redi-mix truck, the following suggestions are offered:
A. Leave the hopper full of concrete at the time of shutdown.
It is important not to let the
much water into the hopper, as this could cause separation of the concrete in the hopper.
B. If the
shutdown
the engine so the vibration does not separate the mix in
the hopper which can cause a blockage in the manifold
when the pump is started.
C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12) — PAGE 29
period exceeds 2 to 3 minutes, turn off
redi-mix
driver wash too
6. A thorough inspection of the drive components and greasing of all bearings after each job will ensure adequate
lubrication and service to the pump which is normally
operating in wet, gritty conditions.
NOTE
Over-greasing any
Mayco pump will not damage the bearing.
bearing
on your
C-30HDN PUMP — OPERATING INFORMATION
WARNING - Line Blockage
If a blockage occurs, find where it is and clear it before
further pumping. DO NOT increase the engine speed to
clear the blockage. Increasing the engine speed will only
compound the problem .
If you repeatedly pull the throttle all the way out and try to
force your pump to push through
separation of material in the hose or manifold, you will soon
have breakdowns and costly repairs which are not covered
under warranty.
blockages
, due to
WARNING - Clear Hopper Before Moving
It will be necessary at times to move your pump from one job
site location to another. Before moving the pump, make sure
to pump the remaining concrete out of the hopper.
Moving the pump with a
severe damage or breakage of the axle and axle springs,
excess strain and pressure on the hub and bearing assembly.
Pumping Tips
1. The effects of heat and excessive time on concrete: Hot
concrete, commonly referred to as a hot load, is concrete that
has been in the redi-mix truck in excess of 2 to 3 hours. On
a hot day, this amount of time is even less. A brief explanation
of why heat and time affect concrete:
Concrete starts setting by drying up through a chemical
reaction. The catalyst to this reaction is heat. When pumping
a hot load, it is important to remember that when you have to
stop pumping for any reason, add water to the concrete in the
hopper and hand mix and move concrete in the hose every
5 minutes. If the shut down time becomes too long, wash out
immediately.
2. ADMIXTURES: Admixtures that are designed into the concrete mix by the redi-mix company or an architectural
engineering company. This section lists common admixtures
and a brief explanation of their functions:
A. Pozzolith 300 – or the equivalent acts as a water
retarder and a lubricant. On a lean mix, long pushes, stiff
mixes, and vertical pushes, Pozzolith 300R helps
pumpability.
B. MBVR – air entraining, acts as a lubricant.
full hopper
of concrete can cause
3. When pumping long distance or pumping stiff mixes, you can
4. Leaking manifold seals or hose coupling gaskets which leak
5. Damaged hoses with internal restrictions can cause block-
6. If a blockage occurs in a hose, “walk the hose” until you find
Use
a rupture can cause
C. Calcium Chloride – commonly referred to as C.C., is
used as an accelerator. When pumping a load with
calcium chloride, it is recommended that you wash out
if the waiting time between delivery trucks becomes too
long.
D. Super Plasticizers – acts as an accelerator. The
concrete will look very wet after the super plasticizer is
added, but will begin to set up very fast. Wash out
immediately if you do not have a truck waiting. Super
plasticizers are used mainly on commercial jobs.
E. Red Label – acts as a water retarder and an accelera-
tor. Red label will be used mainly on commercial jobs.
F. Fly Ash – is used to help increase the strength of the
concrete and decrease the cement content per yard.
This is one of the most common admixtures used.
All admixtures will be shown on the
redi-mix concrete ticket. Before start-
NOTE
expect a drop in volume compared to shor ter lines and wetter
mixes due to the change in valve efficiency or cavitation.
water can cause separation and subsequent jamming at that
point.
ages.
the point of trouble. The hose will be soft immediately past the
blockage. If this happens at the start, disconnect the hose at
the first coupling past the blockage.
A. Elevate the hose at that point with the blockage area
hanging down.
ing the pumping job, ask the driver of
the redi-mix truck to see the concrete
ticket and note the admixtures that exist
and take the proper action.
WARNING - Line Under Pressure
extreme
CAUTION! The hose line is under pressure and
serious injury.
B. Using a hammer, you can pound the down-stream edge
of the packed area until it is free to flow. Shake all of the
sand and gravel out to the end of the hose.
C. Before reconnecting the hose, start the pump and run a
small amount of concrete out to the end of the hose. This
will assure that all of the separation is out of the hose.
PAGE 30 — C-30HDN PUMP — OPERATION AND PARTS MANUAL — REV. #11 (03/29/12)
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