Section C - Troubleshooting, Service & Repair; Introduction - Sentinel JetFlush Rapid Manuel D'utilisation Et D'entretien

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Section C – Troubleshooting, Service & Repair

INTRODUCTION

When your JetFlush pump was first supplied it was flow and pressure tested
after assembly to ensure that it would perform to a high standard. However,
over time and use parts may have been physically damaged, worn out, or
partially blocked by non-soluble matter.
If you are concerned that your pump 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, and repair, your unit. These are listed below, they are not time
consuming, do not require a high level of expertise and will not invalidate the
warranty.
Trouble shooting/problem solving
A flow chart is included on the following pages to assist in diagnosing common
problems that can be experienced on site. The chart and illustrated test are a
useful guide in determining if a problem is related to the JetFlush pump or if it is
a problem related to the heating system.
How to check your JetFlush's performance
We suggest these checks be conducted outside and not within a clients
premises.
Test 1: Pressure Test
What you need: Pressure gauge 0–30 psi adapted to the appropriate BSP male.
1. Fill the tank ½ full of water.
2. Point the flow reverser lever to the left.
3. Position the left hand valve to "Circulate".
4. Position the right hand valve to "Dump".
5. Attach one supply/return hose to the BSP nipples. (short circuiting the flow).
6. Attach the 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 23–25psi.
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