7
English
Oxford
®
Dipper
4. Installation of the Oxford Dipper Base Socket
WARNING
Some of the parts are heavy and will need to be lifted with care. You may need the
assistance of a second person with the heavier assemblies.
The base socket of the Dipper is subjected to high loading during use. It is essential the
immediate area around the socket is a good sound concrete construction able to withstand the
substantial forces imposed. Joerns Healthcare strongly recommend an architect or structural
engineer is consulted for all applications. All installations should be tested (including a full safe
working load test) to the manufacturers recommendations prior to hand over to the users, with
particular attention being paid to the socket and surrounding concrete.
There are three types of socket available. These are designated “A”, “B” & “C” sockets and will
enable the Dipper to be fitted alongside the majority of swimming pools. Special applications
such as hydrotherapy pools, jetties or boat mooring pontoons should be discussed with your local
dealer, a structural engineer or with Joerns Healthcare direct.
1. “A” Socket Fixing
This is the most commonly supplied socket and is fitted into a hole 90mm diameter, core bored
into the concrete slab to a depth of 245mm. The socket is held firmly in place with a non shrinking
cement. The construction of the “A” socket is shown on page 5. When correctly fitted, the top of
the socket is 12.7mm below the floor level. Each socket is supplied with a blanking plug to prevent
ingress of water when the mast has been removed for storage. When fitted, the top of the blanking
plug is flush with the floor level.
2. “B” Socket Fixing
This socket is for use in swimming pools with a water channel around the edge of the pool.
Basically, the “B” socket is an “A” socket with a plate which adds additional bracing. The “B”
socket plate is fixed in place with six 15mm diameter expanding bolts of the raw-plug type. The “B”
socket construction is illustrated on page 7. As with the “A” socket, the “B” socket is supplied with
a flush fitting blanking plug to prevent ingress of water.
3. “C” Socket Fixing
This socket is surface mounted and stands proud of the floor by 150mm. It is used mainly where
there is insufficient depth of concrete for “A” or “B” sockets. The “C” socket plate is drilled for four
15mm raw-plug type expanding bolts.
The “C” socket adds 150mm to the height of the mast. This alters the maximum height of the
bottom of the chair (to 1033mm) and the lowest position of the chair bottom below floor level (to
764mm). An illustration of the “C” socket is shown on the following page.
