Hypertherm DynaMAX 550P, Operator'S Manual

Page: 200 / 224

Installation
8
200 811390 Operator Manual DynaMAX 550P/560P/575P Waterjet Pump
Connect the electrical power
1. Attach a ground leg to the grounding lug in the electrical enclosure.
Use this table to find the minimum cross-sectional area of the external copper ground leg.
2. Connect electrical power to the primary circuit breaker. The breaker is labeled on the system
schematic drawing and in the electrical enclosure as CB-1.
Do the first start
Use this procedure:

at installation.

when putting the equipment into operation after storage or shipping.

after maintenance or repairs are done on the intensifier, the high-pressure water system, or
the low-pressure water system.
CAUTION
This waterjet pump can leak up to 160 mA.
To reduce the effects of a high leakage current, connect the pump to a dedicated supply
transformer that has separate windings.
Use electrical parts that are certified by national or local electrical codes.
If the cross-sectional area (S mm 2 ) of the
copper phase conductors supplying the
equipment is
The minimum cross-sectional
area (Sp mm 2 ) is
equal to or higher than 16 equal to S
higher than 16 and lower than or equal to 35 16
higher than 35 S/2
CAUTION
If a water line, a fitting, or a valve could be frozen, do not operate the pump. Thaw the
equipment until water moves easily through the system.
Examine the parts for damage. Replace parts, if necessary.
CAUTION
Air-cooled system
If the C
OOLING IN
hose and the C
OOLING OUT
hose are not connected to the external heat
exchanger before starting the motor, the hydraulic hoses can be damaged.
CAUTION
This procedure could cause damage to the orifice.
Do not do the first start with a diamond orifice installed. Hypertherm recommends using a ruby
orifice during the first 40 hours of operation.