Use Of Chains - Homa GRP 10 Original Instruction Manual

provisionally with 2 screws.
• Put the auto-coupling base unit in the exact position
and fasten with expansion bolts to the pit bottom. If
the bottom is uneven, the base unit must be support-
ed to be in horizontal position.
• Assemble the discharge pipe in accordance with the
generally accepted procedures and without exposing
the pipe to distortion or tension.
• Insert the guide rails in the ring of the auto-coupling
base and adjust the length of the rails by cutting them
accurately to the guide rail bracket.
• Unscrew the provisionally fastened guide rail brack-
et, fit it on top of the guide rails and fasten it to the
pit cover. Make sure that the guide rails do not have
any axial play, as this would cause noise during pump
operation.
• Clean out debris from the pit before lowering the
pump into operation position.
• Fit the coupling flange at the discharge of the pump.
If the coupling flange has a male thread, use a suit-
able glue. Arrange the glue of the male thread and
screw the coupling flange on it. Fix the position with
the stud screw and let it dry. Make sure that the rub-
ber profile-seal is properly fixed to the flange and will
not fall off when the pump is lowered into the pit.
Slide the guide bar of the coupling flange between
the guide rails and lower the pump into the pit by
means of a chain secured to the pump handle. When
the pump reaches the auto-coupling base unit, it will
automatically connect tightly.
• Hang up the end of the chain to a suitable hook at the
top of the pit.
• Adjust the length of the motor cable, so that it is not
damaged during the pump operation. Make sure that
the cables are not sharply bent or pinched.
Flush pipe
The pump housing is available with a flush pipe. This must
be mounted by installation:
• Dismount the handle from the pump
• Now arrange the glue from the accessories kit of the
male thread and screw the flush pipe into the fas-
tener of the pump housing (see figure) and let it dry.
Observe the angle between the pump and the flush
pipe. If you use a GRP16, the discharge of the flush
pipe must be aligned with the handle.
• Mount the handle again.
GRP 16
Automatic Float Switch Control
• The pumps may be supplied with float switch level
controllers. They start and stop the pump according
to the liquid level in the pit.
• The difference in level between start and stop must
be adjusted by adjusting the free swinging length of
the cable between the float switch and the cable fas-
tening.
• Long cable end: Large difference in level.
• Short cable end: Small difference in level.
• The stop level must be adjusted in such a way, that
the pump stops before the liquid level is lowered be-
low the top of the pump housing. The start level must
in any case be below the bottom of the liquid inlet
pipe of the pit.
• The high alarm level, if a separate float switch for that
is installed, should be adjusted approx. 10 cm above
the start level, in any case it must be below the bot-
tom of the liquid inlet pipe of the pit, so that the start
level must be adjusted accordingly.
• Never place the float switch in the sump without fix-
ing the float switch cable to a fixed point in the sump,
because the float switch needs a rotation around the
fixing point of the cable to operate without any prob-
lems. Non-observance may cause an overflow be-
cause the pump does not start running or a dry run of
the pump in fact that the pump does not stop, which
will destroy the pump.
• Note: Only the proper adjustment and fixing of the
float switch cable will guarantee a reliable pump op-
eration. After any modification of the float switch ad-
justment the function must be checked by a test-run
of the pump.

5.3. Use of chains

Chains are using for lowering and raising the pump in the
operating area. They are not using to safe pending pumps.
Use them as follows:
• Fix one end of the chain on the handle of the pump.
• Fix the other end of the chain on the lifting gear.
• Tight the chain and lift the pump slowly.
• Swing the pump over the operating area and lower
it carefully.
GRP 26/36
EngliSH | 43