Air Conditioner; Clean/Replace Air Conditioner Circulation/Fresh Air; Filters - Hitachi ZW 120-6 Operator's Manual

K. Air Conditioner

Clean/Replace Air Conditioner Circulation/Fresh Air

Filters

Clean filters
--- every 100 hours (or once a week whichever comes
first)
Replace filter
--- after cleaning filters 10 times (or when the filters
are severely clogged)
f
NOTE: In case the machine is operated at a dusty job site,
clean or replace the filter element earlier than the normal
interval.
Clean Fresh Air Filter
1. Remove the filter:
The fresh air filter is installed behind cover (1) on the
left rear side of the cab exterior. Open cover (1) with the
starter key.
Loosen wing nuts (3) and remove plate (2). Remove fresh
air filter (4).
d
CAUTION: When using compressed air pressure, wear
safety glasses or goggles.
IMPORTANT: If compressed air delivery pressure is
high, damage to the filter fins may result. Always use
compressed air at the lower pressure than 0.2 MPa
(2kgf/cm 2 , 29 psi). Keep the nozzle more than 500 mm
(19.7 in) away from the core surface.
2. Clean fresh air filter (4).
Clean fresh filter (4) using compressed air or by washing
with water.
Washing procedure with water is as follows:
2.1 Use tap water.
2.2 Submerge the filter in water containing a neutral
detergent for about 5 minutes
2.3 Clean the filter with water again.
2.4 Sufficiently dry the filter.
MAINTENANCE
4
7-88
1
MNDF-07-032
2
3
MNEC-07-043