12
Code: 02250144
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517 SRV
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250 --- SRV
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2400
English
12
7 Maintenance
The user is responsible for recording all maintenance in a machine log, which is to
be accessible to maintenance personnel.
This log is to contain at least the following information:
S
details of all repairs and maintenance;
S
the quantity and type of refrigerant loaded or discharged on each occasion;
S
the results of any analysis of recycled refrigerant;
S
the origin of any recycled refrigerant;
S
operations carried out on machine components;
S
the results of routine inspections;
S
significant periods during which the machine was not used;
Before accessing live electrical parts
, disconnect the power supply to the
dryer using disconnect switch QS or disconnect the cable connections.
SAFETY DEVICES
HP
high pressure switch
COMPRESSOR TYPE
PISTON
N.B.:
Always use original spares supplied by the manufacturer.
Failure to do so renders the manufacturer not liable for incorrect unit operation.
7.1 Preventive maintenance
For optimum performance from your dryer follow the periodic maintenance sched-
ule described below.
WEEKLY
CONDENATE DRAIN
WEEKLY
CONDENATE DRAIN
See condensate drain manual supplied separately.
MONTHLY
COMPRESSOR
Make sure the compressor head temperature is between 59
˚
F (15
˚
C) and
MONTHLY
Make sure the compressor head temperature is between 59 F (15 C) and
203
˚
F (95
˚
C) when running. If this is not the case consult Chap.10.
EVERY
CONDENSER
Remove any dust from the condenser fins.
COMPRESSOR
EVERY
4 MONTHS COMPRESSOR
Make sure compressor power consumption complies with data plate specifica-
tions.
CONDENSATE DRAIN
Completely disassemble the drain and clean all its components
Completely disassemble the drain and clean all its components.
Refer also to condensate drain manual supplied separately.
YEARLY
WATER---COOLED MODELS
In applications with a very high fouling tendency (eg. when using extremely hard
water) clean the exchanger by circulating a cleaning liquid. Use a tank with a
weak acid, 5% phosphoric acid, or if the exchanger is frequently cleaned 5%
oxalic acid. Pump the cleaning liquid through the exchanger. For optimum
cleaning the cleaning solution flow rate should be a minimum of 1.5 times the
normal flow rate, preferably in a backflush mode. Afterwards rinse with large
amounts of fresh water, in order to get rid of all the acid, before starting up the
system again. Clean at regular intervals.
YEARLY
Heat exchanger
Weak acid
water
in
water
out
The control panel is equipped with terminals for the connection of a remote alarm.
Do not use solvents to clean the control panel on the front of the unit.
