Flexxaire FX 2000 Series, Manual

Page 2-8

01523r7.wpd

Section 2 - Hydraulic Fan Group

June 14, 2007

Printed in Canada

Figure 12, Temperature Control Schematic

A.

Find an appropriate location for switches and timer
on operator’s console.

B.

Mount timer onto backside of console.

NOTE:

Timer  comes with 2 strips of double-sided
tape. Clean surface with rubbing alcohol
or equivalent prior to mounting timer.

C.

Mount switches and switch decals.

D. Step only applicable for 3-Position control kit.

Install temperature switch into the engine’s water
jacket.

NOTE 1:

Temperature switch(es) are used to
put the fan into full pitch at their rated
temperature. The fan remains in full
pitch until temperature drops
approximately 8

?

F below rated

temperature.  Switch(es)  for  different
temperature  ranges  are available
from Flexxaire

®

.

NOTE 2:

Fans will go to pitch based on engine
temperature;  however,  additional
temperature  switches  can  be  added
for hydraulic oil or any other fluid as
required. Install additional switches
parallel  to  the  engine  temperature
switch  as  shown  in 

Figure 11

.

Contact  Flexxaire

®

  for  ordering

additional temperature switches.

E.

Make  wiring  connections  as  per 

Figure  11

  or

Figure 12

, depending on control kit be used.

NOTE 1:

Hydraulic solenoid connector
(Item 4) may contain a diode.

Polarity  is  important!

  Connect

pin  2  to  ground and pin 1 to
power source.

NOTE 2:

MOV (Harris V36ZA80) (Item 2) is
used to protect timer electronics
from  voltage  surges  found  in
heavy equipment electrical
systems.

Figure 11, Non-Temperature Control

Schematic

2.2.2.6. Hydraulic Control Set-Up

The  following  control  set-up  is  specific  to  Flexxaire

®

control groups but would apply to similar set-ups.

A. Step only applicable for 3-Position control kit.

Install  a  jumper wire across temperature switch
leads, to by-pass temperature switch (this will allow
setup to be completed without having engine hot).

B.

Start engine to develop hydraulic pressure.

C.

Toggle Air Flow switch (Item 3) several times to
purge air from newly installed hydraulic lines.

NOTE:

If air exists within the hydraulic lines, the
fan will take longer to purge.