Larzep Z12101, Operating Instructions Manual

Page: 10 / 28

10 193552102 - v.1 - UPD 300817
5 - INSTALLATION AND START-UP
This chapter describes the methods of installation of the pump. The method here recommended will give excellent results. The purchaser
of the pump, i.e. the manufacturer of the machine on which the pump will be installed, may opt for different types of installation, using
brackets or any other types of accessories considered to be necessary.
HOWEVER, THE ORIGINAL SHAPE AND ATTACHMENT OF
THE PUMP MUST NOT BE MODIFIED, THE PROTECTIONS APPLIED TO THE PUMP MUST NOT BE TAMPERED WITH AND NO
ACTION MUST BE TAKEN THAT COULD MAKE THE PUMP POTENTIALLY DANGEROUS
. If these instructions are disregarded, the
person who is responsible for the modi fi cations automatically assumes full liability for any accidents that may occur during use of the pump.
THE PUMP MAY BE USED IN HORIZONTAL POSITION ONLY.
Ask the manufacturer about the use in vertical position.
Figure 3 on page 2 shows the drilling template to use when designing the pump baseplate ( fi g.3a -> 2.4 Lt. pump / fi g.3b -> 5 - 7 - 10 - 20
Lt. pump).
IMPORTANT: the fi xing hole depth for pump with 2.4 litre reservoir is 20 mm. This length must not be exceeded.
The fi xing screws must be self-tapping type for plastic - Ø 5 - UNI 9707.
WARNING
IF THE PUMP’S CONTROLS ARE EXPOSED TO FALLING OBJECTS OR SOMETHING OTHER THAT COULD
ACCIDENTALLY HIT THEM AND CAUSE AN UNEXPECTED START-UP, IT IS NECESSARY TO INSTALL AN
APPROPRIATE PROTECTION IN ORDER TO AVOID THIS HAZARD AND RESTORE THE SYSTEM SECURITY.
THE PROTECTION MUST STAND ON TO THE CONTROL MECHANISM.
5.1 - Filling the reservoir (if the pump is supplied without oil)
The table "TECHNICAL SPECIFICATIONS" (page 9) shows the oil quantities required to fi ll the pump reservoir. The same table shows
the actual usable oil capacities also. Use the oil types speci fi ed in the table. The use of oil with different characteristics can result in
serious damage to the pump and render it unsuitable for use.
THE MANUFACTURER SHALL NOT BE HELD RESPONSIBLE FOR INJURY TO PEOPLE OR DAMAGE TO
PROPERTY CAUSED BY THE USE OF UNSUITABLE OR EXHAUST OIL.
DAMAGE TO THE PUMP RESULTING FROM THE ABOVE MENTIONED CAUSES IS NOT COVERED BY
WARRANTY.
● Use a slotted tip screwdriver to remove the fi ller plug ( fi g.12, page 7)
● Pour the correct quantity of oil into the reservoir (refer to the table "TECHNICAL SPECIFICATIONS", page 9)
● Clean the edges of the fi ller opening with a clean cloth and re fi t the plug, pressing it down fully.
5.2 - Start-up
THE INSTALLATION OF A DEVICE THAT INTERCEPTS THE PNEUMATIC AIR SUPPLY IS RECOMMENDED
TO RAPIDLY DISCONNECT THE PUMP FROM PNEUMATIC CIRCUIT IN CASE OF NEED OR MAINTENANCE.
BEFORE CARRYING OUT ANY CONNECTIONS, VERIFY THE CONDITION OF FITTINGS AND SEALS AND
ENSURE THREADS AND PIPES ARE CLEAN AND INTACT.
● Connect the hydraulic pressure hose ( fi g.12, page 7). The hose must be fi tted with a 3/8" NPTF coupling after binding the thread
with Te fl on tape.
● Unscrew the breather screw ( fi g.5, page 3) by three or four turns using an appropriate screwdriver
5.3 - Connecting the oil return line (use with a double acting cylinder)
● If the fi ller plug is in its extracted position (B in fi g.4, page 3), press it fully down to position “A” ( fi g.4, page 3).
● Unscrew the threaded insert from the centre of the fi ller plug (C in fi g.6, page 3) and connect a hose with a 3/8" NPTF fi tting after
binding the thread with Te fl on tape.
5.4 - Connecting the compressed air line
● Select a quick coupler that is suitable for your air line, bind the thread with Te fl on tape, and then screw it into the compressed air
inlet connection ( fi g.12, page 7)
● The quick coupler must be connected to an air line supplying compressed air at between 2.8 and 10 bar (see "TECHNICAL SPE-
CIFICATIONS", page 9).
WARNING:
BEFORE OPERATING THE PUMP, ENSURE THAT ALL HYDRAULIC PIPES CONNECTIONS ARE CORRECTLY
TIGHTENED . THIS OPERATION MUST BE CARRIED OUT WITH APPROPRIATE EQUIPMENT