High Potential Test (Insulation Strength Test); Additionally Earthing The Compressor Housing; Operation; Regular Tests - Bitzer CSH6553-35Y Operating Instructions Manual

Oil heater for series CS.8. to CS.105
• power consumption: 300 W
available for 230 V, 400 V or 115 V
• The oil heater is mounted into a housing bore.
dimensions: A = 56 mm, B = 246 mm, ØC =
29,9 mm
All oil heaters have the enclosure class IP65, if the
electric connector is mounted and screwed.

6.10 High potential test (insulation strength test)

The compressors were already submitted to a high po-
tential test in the factory according to EN12693 or ac-
cording to UL984 or UL60335-2-34 for the UL model.
NOTICE
!
!
Risk of defect on the insulation and motor fail-
ure!
Never repeat the high potential test in the same
way!
A repeated high potential test may only be carried out
with max. 1000 V AC.

6.11 Additionally earthing the compressor housing

DANGER
Danger of electric shock due to spontaneous
electrostatic discharge at high voltage.
Carefully design protective earth conductor sys-
tem.
▶ For compressor power consumption from 100 kW:
Earth the compressor housing separately. Connec-
tion: see dimensional drawings, position 16.
▶ For outdoor installation: Equip compressor with a
protective earth conductor system for conducting to
earth all electrical charges caused by lightning.

7 Operation

7.1 Regular tests

Check the system at regular intervals according to na-
tional regulations. Check the following points:
• Operating data, see chapter Compressor start, page
48.
• Oil supply, see chapter Compressor start, page 48.
SB-170-10
• Safety and protection devices and all components
for compressor monitoring (check valves, discharge
gas temperature sensors, differential oil pressure
switches, pressure limiters, etc.).
• Tight seat of electrical cable connections and
screwed joints.
• Screw tightening torques, see chapter Mind when
mounting or replacing, page 77.
• Refrigerant charge.
• Tightness.
• Prepare data protocol.
7.2 Locking the protection and monitoring
devices
The compressors are equipped with electronic protec-
tion and monitoring devices, triggering a lock-out in
case of overload or inadmissible operating conditions.
Determine and remove the cause before performing a
reset!

8 Maintenance

Observe the manufacturer's documentation of the com-
ponents used!

8.1 Oil change

NOTICE
!
!
Damage to the compressor caused by degraded
ester oil.
Moisture is chemically bound to the ester oil and
cannot be removed by evacuation.
Proceed with extreme care:
Any penetration of air into the system and oil
drum must be avoided under all circumstances.
Use only oil drums in their original unopened
state!
The listed oils, (see chapter Application ranges, page
44), are characterised by their high degree of stability.
An oil change is generally not required when appropri-
ate suction-side fine filters are mounted or used. In
case of compressor or motor damage, it is recommen-
ded performing an acid test. If necessary, carry out
cleaning measures: Mount a bidirectional acid retaining
suction line gas filter and change oil. Purge the system
on the highest point of the discharge side and collect
the refrigerant in a recycling cylinder If necessary,
change filter and oil again after several operating hours
and purge the system.
75