MIL-HDBK-1164
Table 44
Maintenance Checklist for Dry Chemical Feeders
Inspection
Action
(1), (2)
Dry feeders
Remove chemical dust accumulations; check
D
feeder performance; check for loose bolts;
clean solution tank of accumulated sediment;
lubricate moving parts.
Drive mechanisms and
Service and lubricate.
Q
moving parts
Check feed-rate accuracy and adjust, as
M
necessary
A
Overhaul feeders
Thoroughly clean feeder and feeding
mechanism; paint; service and lubricate drive
mechanisms and bearings; clean and paint
solution tanks.
Feeders out of service
Clean; remove all chemicals from hopper and
V
feeder mechanisms.
Disc feeders
Clean rotating disc and plow.
V
Oscillating feeders
Check and adjust mechanism and adjustable
M
stroke rod.
Rotary gate feeders
Clean pockets of star feeder and scraper.
M
M
Belt-type feeders
Check vibratory mechanism, tare-balance,
feeding gate, belt drive and belt; calibrate
delivery.
Loss-in-weight feeders
Check feeder scale sensitivity, tare-weight,
M
and null balance.
Screw feeders
Clean screw, check ratchet drive or variable
M
speed drive.
Dust collectors
Motors
Lubricate motors
V
Filter bags
Check condition and attachment. Securely
V
attach sound bags; replace damaged or torn
bags.
(1) D-Daily; M-Monthly; Q-Quarterly; A-Annually; V-Variable, as conditions may indicate.
(2) The frequencies shown are suggested frequencies that may be modified by local
command, as individual installation conditions warrant.
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