Section B - Using The Jetflush Rapid Pump For Power Flushing; Introduction; System Inspection And Preparation - Sentinel JetFlush Rapid Manuel D'utilisation Et D'entretien

Section B – Using the Jetflush Rapid pump for power flushing

INTRODUCTION

JetFlush Rapid pumps are designed to power flush heating systems with
minimal dismantling, by circulating water and flushing chemicals at high
velocity, and then purging the dirty water from the system with a high flow of
fresh, clean, water. Radiators may be individually flushed without removing or
disconnecting them from the system.
Pumps with 220 volt motors are single phase, for use on a standard domestic
supply. A five amp fuse should be fitted in the plug top. We recommend the use
of a residual current circuit breaker plug or adapter for extra protection.

SYSTEM INSPECTION AND PREPARATION

1. Turn on heating system in order to identify problem flow areas, cold
radiators, or those with cold spots, etc. Switch off system.
2. Note how many turns are required to shut off radiator and lock shield valves
so that settings may be re-instated after flushing to avoid system balancing.
Use a copy of the chart provided to record the number of turns. Open all
(both sides of radiator) valves fully.
3. Set any thermostatic radiator valves to the fully open position. Remove the
heads and check that the plunger pin moves freely. Check that diverter or
zone valves are in the fully open position, setting manually if necessary.
4. If an anti-gravity/check valve is present, this must be by-passed or bridged
to allow the flow reversing action to be used. It may be possible to dissemble
the anti-gravity valve, and remove internal components.
5. Tie up the ball cock or turn off the mains water supply by another means.
6. Drain enough water from the system to empty the feed & expansion (F&E)
tank. This can be drained into the JetFlush tank if it has been connected
(connection details are in the next section).
7. With vented systems, it is necessary to cap off, or loop together, the
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