allen TRTP275, Operations & Parts Manual

Page: 74 / 170

275 - 09/2018 Page 74
SECTION 3
SERVICE
Filter Replacement (Cont’d)
Air Filter (Cont’d)
Replacing the primary/secondary filters
Step Activity
1. Open the retaining clips (2) and remove the air filter cover (3).
2. Pull out the primary filter (6) and either replace (recommended) or clean (see below). Replace or clean the primary filter
according to the service interval indicator. The primary filter must be replaced every two years at the latest however,
cleaning is no longer possible after this time.
3. Remove dirt adhering to the inside of the air filter housing (1), air filter cover (3), and dust discharge valve (4).
4. Pull out and check the secondary filter (5), replace if required. The secondary filter can not be cleaned. The secondary
filter must be replaced after every fifth replacement of the primary filter, though no later than every two years.
5. Carefully insert new filter elements.
6. Place the air filter cover on the air filter housing and lock all retaining clips making sure that the dust discharge valve
points vertically downwards.
Cleaning the primary filter
Step Activity
1. Blow out the primary filter (6) with dry compressed air from the inside to the outside until dust no longer emerges. Use
an air gun with an extension tube (7) with the end bent by approx. 90°. The end of the extension tube must not touch
the filter paper.
2. Check the sealing surfaces (9) of the filter cartridge for damage.
3. Check the filter cartridge for tears or other damage in the filter paper by holding it against the light at a slant or shining
light from a lamp (8) through it. In case of doubt, always replace the primary filter.
NOTE: The primary filter may only be cleaned once, then it must be replaced.
SECONDARY AIR FILTER PART NUMBER: 065855
PRIMARY AIR FILTER PART NUMBER: 065856