When
your CF30 was first supplied it was flow / pressure tested
to ensure that it would perform to a high standard. However,
since supplied it may have been overheated, physically damaged
or partially blocked by non-soluble matter.
If
you are concerned that your CF30 may not be producing
the same performance as when it left our factory there
are a number of steps that you can take to test/repair
your unit. These are not time consuming, do not require
a high level of expertise and will not invalidate the
warranty.
DIAGNOSIS
TEST
1: PRESSURE
What
you need: Pressure
gauge 0-30 psi adapted to ¾ BSP male.
1. Fill
the tank ½ full of water.
2. Point
the flow reverser to the left.
3. Close
the dump valve on the left hand side, and the isolation
valve on the right hand side.
4. Open
the dump valve on the right hand side.
5. Attach
one supply/return hose to the horizontal ¾” BSP
nipples (short circuiting the flow).
6. Attach
the double dump hose as normal.
7. Holding
the end of the dump hose away from you to a suitable discharge
point, switch on the motor for five seconds. You should
see a strong jet of water.
8. Attach
the pressure gauge into the hose end and turn the motor
on for 30 seconds. While the motor is running you should
get a reading of 19-21 PSI.
TEST
2: FLOW RATE
What
you need: Empty
5 litre container (eg Power Flush FX2 container)
1. Repeat
steps 1-7 of Test
1.
2. Hold
the supply/return hose so that it will discharge water
into the empty container.
3. When
ready use an assistant to time how long it takes to fill
the container.
You should get a reading of between 7 and 9 seconds.
TROUBLESHOOTING
If either
the pressure is much less than 19psi, or the flow rate
takes much longer than 9 seconds, further investigation
is required.
INSPECTION
1. Remove
the 4 bolts from flange that attach the pump to the tank
(two with a 17mm spanner, two with a large flat screwdriver).
2. Withdraw
the pump assembly from tank.
3. Inspect
the rotor cover at the bottom of the unit to ensure:
- It is flat
- There are no
bolts damaged/missing
- The O-ring
has not been pushed out
4. Inspect
the inside of the impeller to make sure that there is no
debris inside.
5. Check that there
are 2 hoses securely connected to the underside
of the flow reverser.
REPAIR
A warped
rotor cover, damaged/missing bolts or a distorted o-ring
must be replaced. Rotor covers resistant to high temperatures
are now available.
Obstructions
can normally be removed from the impeller with a small
screwdriver.
If one
hose has become disconnected from the flow reverser simply
remove it and replace with a new section 1cm longer (use
a small piece cut from the end of your dump hose). |
