FUSE
The Tmax is fitted with a 10 A fuse (slow-blow) for protection of its operational circuit due to overload - but NOT against reverse polari-
ty! An overload may be caused by a blocked motor (i. e. by incorrect polarity) or a blocked cog wheel. The latter is unlikely but after
years in service not impossible (see "Maintenance" section).
The unit is supplied with a spare fuse. Refrain from using a fuse with a higher load than 10 Amp. Fuse should be a slow-blow (delay-
action, item no. 5525 set of 2) type in order to absorb a possible higher starting current without instantly blowing.
During setup a blown fuse is a clear indication for incorrect wiring of switch unit and Piston Tanks. The logical setup of the Tmax
will never cause the fuse to blow. Therefore, DOUBLE CHECK wiring before initial operation.
MAINTENANCE
ENGEL Piston Tanks are superior to other designs also in terms of resilience to pollution.
Even slush will not cause a malfunction of the tank as all material drawn into the tank will eventually be discharged.
Standard servicing of the Piston Tank only requires lubrication of the middle cog wheel's retaining bolt with white oil (as used for fire
arms or sewing machines). BALLISTOL Oil (item no. 9720) is ideal for this. Just place a drop between the bolt head and the cog wheel.
After several turns the lubricant will be sucked-in by itself.
After operation in polluted water (e. g. algae) the piston tanks should be rinsed with fresh water. Please note, that further lubrication of
piston is only necessary, if a leakage of the Piston Tank itself is obvious. This might be the case if used in very sandy waters after a peri-
od of time. In this (very unlikely) circumstance, open the tank (unscrew at motor/gear cap), rinse the cylinder and lubricate piston and
inner spindle with a high performance grease such as Q-Lube (recommended, item no. 9705) or a similar dedicated lubricant.
All components should be fastened inside the WTC with screws or should at least be taped. It is not advisable to glue any of the com-
ponents in place, especially the Piston Tanks. If the tanks are glued in with Polyester, Epoxy etc. it is very likely that the cylinder will
deform and therefore cause a defect of the Piston Tank's mechanism.
Radio interference in model submarines is a common problem, due to the limited space and normally unfavourable arrangement of the
receiver antenna. Therefore, all power leads should be positioned as far away as possible from the receiver and the antenna wire. Take
special care of wires [J1] and [J2] leading from the switch unit to the potentiometers on the Piston Tanks. These cables are also inter-
ference-prone and should, therefore, be installed as far away as possible from any other leads.
In addition, all motor housings of the model (including main drive motors) should be grounded through leads connecting to the negati-
ve (-) pole of the main battery. This will further decrease probability of radio interference.
A further effective method for limiting radio interference is the use of ferrite rings (item no. 5800-14 or 5800-17) or clamp ferrites (item
no. 5803-35 or 5803-50).
Tmax
V2
Item No. 1584-TMX
1584-TMX
v11-08
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